--- title: "Part-145 Certifying and Support Staff · Avioverse" description: "Part-145 certifying and support staff: the accountable manager, the certification authorisation from a Part-66 licence, and line and base maintenance roles." url: "https://avioverse.aero/guides/easa-part-145-certifying-staff-personnel" --- # Part-145 Certifying and Support Staff Part-145 certifying and support staff: the accountable manager, the certification authorisation from a Part-66 licence, and line and base maintenance roles. [Dionysis Kefalas](https://avioverse.aero/articles/author/dennis-kefalas) 12 Jun 2026 Updated 21 Oct 2026 12 min read For Part-145 and CAMO staff Part 2 of 9 in EASA Part-145 Maintenance Organisation Show parts Hide parts 1. 1 [Part-145: The Approved Maintenance Organisation](https://avioverse.aero/guides/easa-part-145-approved-maintenance-organisation) 2. 2 Part-145 Certifying and Support Staff 3. 3 [Part-145 Maintenance Data and Performance](https://avioverse.aero/guides/easa-part-145-maintenance-data-performance) 4. 4 [Part-145 Maintenance Certification and Records](https://avioverse.aero/guides/easa-part-145-certification-of-maintenance-records) 5. 5 [The Maintenance Organisation Exposition (MOE)](https://avioverse.aero/guides/easa-part-145-maintenance-organisation-exposition) 6. 6 [Part-145 Tool Control and Calibration (145.A.40)](https://avioverse.aero/guides/part-145-tool-control-calibration-145-a-40) 7. 7 [Receiving Inspection of Aircraft Parts: 145.A.42](https://avioverse.aero/guides/receiving-inspection-aircraft-parts-145-a-42) 8. 8 [Part-145 Approved Supplier List and Evaluation](https://avioverse.aero/guides/part-145-supplier-evaluation-approved-supplier-list) 9. 9 [Part-145 Parts Storage, Shelf Life and ESD](https://avioverse.aero/guides/part-145-parts-storage-shelf-life-esd) Quotes checked on 24 Sep 2026 against EASA Easy Access Rules for Continuing Airworthiness (Regulation (EU) No 1321/2014) — 2 Sep 2025 revision. On this page ## The people who sign for the work This page is who is nominated above that signature, and the certifying staff for line maintenance and for base maintenance. ## The accountable manager and nominated persons [145.A.30(a) (full rule text)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-145/section-a-technical-and-organisation-requirements/145-a-30-a) Accountable manager > The organisation shall appoint an accountable manager that has corporate authority to ensure > > that all maintenance activities of the organisation can be financed and carried out in > > accordance with Regulation (EU) 2018/1139 and its delegated and implementing acts. The > > accountable manager shall: > > 1\. ensure that all necessary resources are available to accomplish maintenance in accordance > > with this Annex, Annex I (Part-M) and Annex Vb (Part-ML), as applicable, to support the > > organisation certificate; > > 2\. establish and promote the safety policy specified in point 145.A.200(a)(2); > > 3\. demonstrate a basic understanding of this Regulation. Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision. [145.A.30(b) (full rule text)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-145/section-a-technical-and-organisation-requirements/145-a-30-b) Nominated persons for the maintenance functions > The accountable manager shall nominate a person or group of persons representing the management > > structure for the maintenance functions and with the responsibility to ensure that the > > organisation works in accordance with the MOE and approved procedures. It shall be made clear in > > the procedures who deputises for a particular person in the case of lengthy absence of that > > person. Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision. [145.A.30(c) (full rule text)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-145/section-a-technical-and-organisation-requirements/145-a-30-c) Compliance monitoring > The accountable manager shall nominate a person or group of persons with the responsibility to > > manage the compliance monitoring function as part of the management system. Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision. [145.A.30(ca) (full rule text)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-145/section-a-technical-and-organisation-requirements/145-a-30-ca) Safety management processes > The accountable manager shall nominate a person or group of persons with the responsibility to > > manage the development, administration and maintenance of effective safety management processes > > as part of the management system. Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision. The accountable manager shall nominate a person or group of persons under point 145.A.30(b), point 145.A.30(c) and point 145.A.30(ca): the maintenance functions, the compliance monitoring function, and the effective safety management processes. ## Certifying staff and support staff [145.A.35(a) (full rule text)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-145/section-a-technical-and-organisation-requirements/145-a-35-a) Certifying staff and support staff requirements > (a) In addition to the requirements of points 145.A.30(g) and (h), the organisation shall ensure > > that certifying staff and support staff have an adequate understanding of the relevant aircraft > > or components, or both, to be maintained and of the associated organisation procedures. In the > > case of certifying staff, this shall be accomplished before the issue or reissue of the > > certification authorisation. > > 1\. ‘Support staff’ means those staff holding an aircraft maintenance licence under Annex III > > (Part-66) in category B1, B2, B2L, B3 and/or L with the appropriate aircraft ratings, working in > > a base maintenance environment while not necessarily holding certification privileges. > > 2\. ‘Relevant aircraft and/or components’, means those aircraft or components specified in the > > particular certification authorisation. > > 3\. ‘Certification authorisation’ means the authorisation issued to certifying staff by the > > organisation and which specifies the fact that those staff may sign certificates of release to > > service within the limitations stated in such authorisation on behalf of the approved > > organisation. Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision. [145.A.35(b) (full rule text)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-145/section-a-technical-and-organisation-requirements/145-a-35-b) Certification authorisation > (b) Except for the cases listed in points 145.A.30(j) and 66.A.20(a)3(ii), the organisation may > > only issue a certification authorisation to certifying staff in relation to the basic categories > > or subcategories and, except for the category A licence, any type rating listed on the aircraft > > maintenance licence as required by Annex III (Part-66), subject to the licence remaining valid > > throughout the validity period of the authorisation and to the certifying staff remaining in > > compliance with Annex III (Part-66). Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision. Point 1 of 145.A.35(a) is support staff: category B1, B2, B2L, B3 and/or L, in a base maintenance environment, while not necessarily holding certification privileges. Point 3 is the certification authorisation. Point 145.A.35(b) is the basic categories or subcategories and, except for the category A licence, any type rating listed on the aircraft maintenance licence. The cases in points 145.A.30(j) and 66.A.20(a)3(ii) are excepted; the assessment and one-off sections below address the relevant routes without setting out every exception. The licence itself is the [Part-66 series](https://avioverse.aero/guides/easa-part-66-aircraft-maintenance-licence-guide). ### Assessment evidence before issue or reissue Use the Avioverse Certifying staff authorisation assessment form to collect evidence for the intended duties and record the assessor's conclusion. Under 145.A.35(f), the organisation assesses competence, qualifications and capability under its MOE procedure before issue or reissue, except for the unforeseen cases in 145.A.30(j)(5). A scope extension still needs evidence for the additional duties; a previous assessment or a good average score is not an automatic exemption. 145.A.35(c) requires certifying and support staff to have at least six months of actual relevant aircraft or component maintenance experience in any consecutive two-year period. It defines that experience through work in a maintenance environment and exercising authorisation privileges and/or actually maintaining at least some of the type or group systems in the authorisation. Point (d) separately requires sufficient recurrent training in each two-year period, covering relevant technologies, organisation procedures and safety management, including human factors. Record the period, the activities and the evidence; employment dates alone do not show the experience described by point (c). ### Why the assessment form asks what it asks **Identity, existing scope and intended duties** establish what the assessor is assessing. Licence validity, applicable ratings and qualification-route evidence support the conditions in 145.A.35(a)–(b); the age check reflects the minimum of 21 in point (l). Where an exception is used, identify it and check all its applicable conditions rather than treating the form selection as proof of eligibility. **Task training and practical experience** distinguish two routes. Under 145.A.35(m), a category A licence holder needs the relevant aircraft task training, with practical and appropriate theoretical content and examination or workplace assessment. Point (n) separately covers the B2 privilege in 66.A.20(a)(3)(ii): relevant category A task training and assessment by the issuing maintenance organisation, plus six months of documented practical experience covering the intended scope within that organisation. Do not apply that B2 condition as a universal category A requirement. **Relevant knowledge, training and work evidence** support 145.A.35(a), (c) and (d). Safety-management and human-factors competence is also covered by 145.A.30(e); point (f) addresses qualifications for non-destructive testing and other specialised tasks, with its stated exception. The form's prompts on wiring, fuel-tank safety, differences and similar-aircraft evidence help assess the actual duties. They do not establish universal courses or renewal intervals for those subjects. **Competence ratings, evidence and development needs** make the judgement under 145.A.35(f) reviewable. References to observed work, records or knowledge testing explain a score. The detailed ratings and any manually entered average are practical evidence aids; an average cannot cancel an unmet condition. Record gaps and the actions needed before the requested scope can be issued. **Conclusion and issue follow-up** keep the recommendation distinct from the issue decision. 145.A.35(g) requires clear scope and limits when its issue conditions are met and specifies conditions for continued validity. Under point (i), responsibility for issuing remains with the compliance monitoring function, which may nominate others to issue or revoke under an MOE procedure. Point (j) requires the holder to receive a copy. In Avioverse, the person assessed can complete the discussion follow-up if they are a workspace member. Otherwise, an internal member records their externally obtained comments and the evidence reference. Assign the issue follow-up to the compliance monitoring manager in the workspace to record the decision, authorisation reference, scope, limits and provision of the copy. Each follow-up is a written section: its assignee records Approve or Request changes with a comment, or Not required with a reason. Submission of the assessment does not itself issue an authorisation. ## One-off certification authorisation after unforeseen grounding Use the Avioverse One-off certification authorisation form only after checking the conditions in 145.A.30(j)(5). The case is an unforeseen grounding away from the main base, with no appropriate certifying staff available at that location. The organisation contracted to provide maintenance support may issue the authorisation through one of two alternative routes: | Route | Evidence required by 145.A.30(j)(5) | | --------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Its employee | Equivalent type authorisations on aircraft of similar technology, construction and systems | | Any person meeting point (ii), described as the external-person route in the form | At least five years' maintenance experience and a valid ICAO aircraft maintenance licence rated for the aircraft type requiring certification; no appropriately approved Part-145 organisation at that location; the contracted organisation obtains and retains the experience and licence evidence | The second route's five-year and aircraft-rated-licence conditions must not be substituted for the first route's equivalent-authorisation test, or vice versa. The absence of an appropriately approved organisation is an additional condition of point (ii), distinct from the absence of appropriate certifying staff that establishes the overall case. ### Why the one-off form asks what it asks **Aircraft, location and request details** tie the proposed authorisation to one grounding. **The unforeseen circumstances, maintenance-support contract and available staff** establish the opening conditions in 145.A.30(j)(5). For example, ExampleAir's operations team may report a grounding and its CAMO may supply the relevant records, but ExampleMRO as the contracted maintenance organisation must establish the conditions for its own issue decision. **The selected route and retained evidence** show which alternative is being used and how the person meets it. **Identity, contact and employer details** make communication and evidence checks practical; the qualification evidence must match the selected route. **The exact work and limits** define the case being authorised and help identify maintenance requiring the flight-safety re-check. The issuing organisation must report the case to the competent authority within seven days after issuing the authorisation. It must also ensure that maintenance which could affect flight safety is re-checked by an appropriately approved organisation (145.A.30(j)(5)). A request for that re-check is a planned action; retain evidence that the necessary re-check was completed. The form's written issue step records the actual issue date, authorisation reference, person, work and limits after the conditions are verified. Assign it to the compliance monitoring manager in the workspace. Assign the notifications step to a compliance monitoring workspace member to record authority reporting, operator or CAMO communication, and the re-check outcome or a reason why no flight-safety-affecting work was involved. An outside person receiving the authorisation does not complete these internal form steps. Keep the issue date and evidence of completed reporting and re-checking distinct from the original request date. ## Line maintenance and base maintenance [145.A.30(g) (full rule text)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-145/section-a-technical-and-organisation-requirements/145-a-30-g) Line maintenance certifying staff > (g) Any organisation maintaining aircraft, except where stated otherwise in point (j), shall in > > the case of aircraft line maintenance, have appropriate aircraft-rated certifying staff > > qualified as category B1, B2, B2L, B3 and L, as appropriate, in accordance with Annex III > > (Part-66) and point 145.A.35. > > In addition such organisations may also use appropriately task-trained certifying staff holding > > the privileges set out in points 66.A.20(a)(1) and 66.A.20(a)(3)(ii) and qualified in accordance > > with Annex III (Part-66) and point 145.A.35 to carry out minor scheduled line maintenance and > > simple defect rectification. The availability of such certifying staff shall not replace the > > need for category B1, B2, B2L, B3 and L certifying staff, as appropriate. Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision. [145.A.30(h) (full rule text)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-145/section-a-technical-and-organisation-requirements/145-a-30-h) Base maintenance certifying staff > Any organisation maintaining aircraft, except where stated otherwise in point (j), shall: > > 1\. in the case of base maintenance of complex motor-powered aircraft, have appropriate > > aircraft-type-rated certifying staff, qualified as category C in accordance with Annex III > > (Part-66) and point 145.A.35. In addition, the organisation shall have sufficient > > aircraft-type-rated staff qualified as category B1 and B2, as appropriate, in accordance with > > Annex III (Part-66) and point 145.A.35 to support the category C certifying staff. > > (i) Category B1 and B2 support staff shall ensure that all relevant tasks or inspections have > > been carried out to the required standard before the category C certifying staff issues the > > certificate of release to service. > > (ii) The organisation shall maintain a register of any such category B1 and B2 support staff. > > (iii) The category C certifying staff shall ensure that compliance with point (i) has been met > > and that all work required by the customer has been accomplished during the particular base > > maintenance check or work package, and shall also assess the impact of any work not carried out, > > with a view to either requiring its accomplishment or agreeing with the operator to defer such > > work to another specified check or time limit. > > 2\. in the case of base maintenance of aircraft other than complex motor-powered aircraft, have > > one of the following: > > (i) appropriate aircraft-rated certifying staff, qualified as category B1, B2, B2L, B3 and L, as > > appropriate, in accordance with Annex III (Part-66) and point 145.A.35; > > (ii) appropriate aircraft-rated certifying staff, qualified in category C or L5, as applicable, > > and assisted by support staff, as set out in point 145.A.35(a)(1). Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision. Point 145.A.30(g) is line maintenance. The certifying staff the organisation shall have are category B1, B2, B2L, B3 and L. It may also use task-trained certifying staff for minor scheduled line maintenance and simple defect rectification. Point 1 of 145.A.30(h) is base maintenance of complex motor-powered aircraft: category C certifying staff, and category B1 and B2 staff to support them. Point 2 is base maintenance of aircraft other than complex motor-powered aircraft. EASA also publishes a policy on how these roles work together during a maintenance event. This page does not restate that policy. ## Next The data, tools and procedures these staff work to are covered in [Maintenance Data, Components and Performing the Work](https://avioverse.aero/guides/easa-part-145-maintenance-data-performance). The certificate they sign is the subject of [Certification of Maintenance and Records](https://avioverse.aero/guides/easa-part-145-certification-of-maintenance-records). ## Where to read it yourself The personnel rules are 145.A.30 and 145.A.35 in Annex II (Part-145) of Regulation (EU) No 1321/2014, in the EASA **Easy Access Rules for Continuing Airworthiness**. Every citation in this guide was checked against the **2025-09-02 revision**. ## Forms in this guide ### Training - Certifying staff authorisation assessment Assess a person's intended Part-145 certifying duties and record the evidence, competence decision and authorisation issue or further action. | Question | Answer type | Required | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------- | | Person assessed | Short answer | Yes | | Employment | Choice: Full time, Part time, Contractor | No | | Licence number Record the applicable licence. For component certifying staff or a permitted exception, explain the qualification basis in the assessment evidence. | Short answer | No | | Licence categories or qualification route Select the actual basis and reference its supporting evidence; a selection alone does not establish eligibility. | Choice, one or more: A, B1, B2, B2L, B3, C, L, National licence route under 145.A.30(j), Component certifying staff route, Other applicable route | Yes | | Assessment purpose Assess the intended duties and any scope extension under the organisation's procedure; identify evidence credited from a previous assessment. | Choice: Initial issue, Extension, Renewal | Yes | | Current authorisation number | Short answer | No | | Current authorisation expiry | Date | No | | Existing authorisation: types, categories and limitations | Long answer | No | | Requested authorisation: types, categories and limitations | Long answer | Yes | | Privileges requested Record only activities assessed here. Additional organisational task permissions do not themselves confer a certificate-of-release-to-service privilege. | Choice, one or more: Sign off tasks, Issue certificates of release to service, Independent inspection, Engine ground run – idle, Engine ground run – high power, Borescope inspection, Receiving inspection, Dye penetrant inspection, Other | Yes | | Validity of the applicable Part-66 licence | Choice: Yes, No, N/A | Yes | | Authorisation scope within the applicable licence privileges and limitations | Choice: Yes, No, N/A | Yes | | Required aircraft ratings on the licence Check the ratings required for the qualification route and intended scope. 145.A.35(b) states the category A and other exceptions; do not treat a type rating as universal. | Choice: Yes, No, N/A | Yes | | Category A task training and assessment for the proposed scope 145.A.35(m): relevant category A task training with practical and appropriate theoretical content, followed by examination or workplace assessment. | Choice: Yes, No, N/A | Yes | | B2 task training and practice for the 66.A.20(a)(3)(ii) privilege 145.A.35(n): relevant category A task training and assessment by the issuing maintenance organisation, plus six months' documented practice covering the scope within that organisation. Use N/A if this privilege is not requested. | Choice: Yes, No, N/A | Yes | | Aged 21 or over | Choice: Yes, No | Yes | | Current human factors and safety management training 145.A.35(d) requires sufficient recurrent training in each two-year period covering relevant technologies, organisation procedures and safety management, including human factors. | Choice: Yes, No, N/A | Yes | | EWIS and fuel tank safety training appropriate to the duties Assess the training needed for the requested duties and procedure. The supplied rules do not prescribe one universal course or renewal interval for these subjects. | Choice: Yes, No, N/A | Yes | | Current knowledge of regulations and exposition procedures | Choice: Yes, No, N/A | Yes | | Differences training appropriate to the intended duties | Choice: Yes, No, N/A | Yes | | Understanding of the aircraft or components in the proposed scope Assess understanding of the relevant aircraft or components and associated procedures before authorisation, as required by 145.A.35(a). | Choice: Yes, No, N/A | Yes | | Adequacy of any evidence based on similar aircraft Where similar-aircraft evidence is used, record how competence for the intended scope is established, including any gaps or further assessment. Use N/A if such evidence is not used. | Choice: Yes, No, N/A | Yes | | Six months of actual relevant maintenance experience in any consecutive two-year period 145.A.35(c) defines actual relevant maintenance experience. Record the period and supporting evidence in the assessment notes. | Choice: Yes, No, N/A | Yes | | Qualifications for the specialised tasks requested | Choice: Yes, No, N/A | Yes | | Evidence for any permitted non-Part-66 qualification route For a 145.A.30(j) route, identify the applicable exception and its evidence. That point refers to Appendix IV conditions for overseas locations; the full conditions are outside this extract. | Choice: Yes, No, N/A | Yes | | Understanding of safety management, human factors and just culture | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Understanding of the organisation's scope, privileges and limitations | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Understanding of applicable regulations and exposition procedures | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Understanding of CDCCL and EWIS relevant to the scope | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Understanding of occurrence reporting and its purpose | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Integrity and attitude to safety | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Understanding of personal authorisation limits | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Identification and planning of critical tasks | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Supervision of non-certifying staff | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Work-card control and correct recording of work | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Identification of the qualifications needed for a task | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Recognition and rectification of unsafe conditions | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Checks before installation and handling of removed parts | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Use of work orders, maintenance data, information systems and tools | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Teamwork, decisions, leadership and communication | Choice: 1 – Not yet competent, 2 – Needs development, 3 – Competent, 4 – Strong, Not applicable | Yes | | Average score, if used (entered manually) Optional summary entered by the assessor. Record the method in the assessment notes; an average does not replace the judgement on each required competence. | Number | No | | Assessment evidence, methods, assessor and development needs Reference records, observed work, knowledge testing and any credited assessment. Explain No or N/A checks and any gap affecting the requested duties. | Long answer | Yes | | Conclusion | Choice: Competent – recommend the authorisation, Additional actions needed | Yes | | Additional actions recommended | Long answer | No | | Qualification, training, experience and knowledge requirements Record an unmet condition honestly and specify the action needed. The issue step must not grant an authorisation until its conditions are met. | Choice: Met for the requested scope, Not met for the requested scope | Yes | Once a response is submitted, the form opens these follow-up steps: - Comments by the person assessed - Compliance review and authorisation issue ### Maintenance - One-off certification authorisation Check the conditions and record a one-off certification authorisation for an aircraft grounded away from base. | Question | Answer type | Required | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------- | | Operator | Short answer | Yes | | Aircraft registration | Short answer | Yes | | Aircraft type | Short answer | Yes | | Location of the aircraft | Short answer | Yes | | Requested by | Short answer | No | | Request date | Date | Yes | | Grounding circumstances Explain the unforeseen circumstances and why maintenance support is needed away from the main base. | Long answer | Yes | | Unforeseen grounding at a location other than the main base | Tick box | Yes | | Maintenance support contract held by the issuing organisation | Tick box | Yes | | Absence of appropriate certifying staff at the location | Tick box | Yes | | Basis for the authorisation | Choice: Employee with equivalent type authorisations on aircraft of similar technology, construction and systems, External person: at least 5 years' maintenance experience and a valid ICAO licence rated for the aircraft type | Yes | | External-person route: absence of an appropriately approved Part-145 organisation at the location Select Yes for the external-person route; select N/A only for the employee route. A No answer prevents use of the external-person route. | Choice: Yes, No, N/A | Yes | | Evidence for the selected authorisation route held on file Employee route: reference equivalent type authorisations. External-person route: hold experience and valid aircraft-rated licence evidence. Record the references with the authorised work. | Tick box | Yes | | Person authorised | Short answer | Yes | | Contact details | Short answer | No | | Licence number and issuing state For the external-person route, record the valid ICAO aircraft maintenance licence and issuing state. Employee-route eligibility rests on the equivalent type authorisations. | Short answer | No | | Aircraft ratings or equivalent type authorisations | Short answer | No | | Licence expiry Record the expiry if stated; confirm current validity for the external-person route. | Date | No | | Maintenance experience (years) | Number | No | | Employer | Short answer | No | | Work covered by this authorisation Define the exact work and limits, reference the person's route evidence and identify any maintenance needing a flight-safety re-check. | Long answer | Yes | Once a response is submitted, the form opens these follow-up steps: - Issue of the authorisation - Authority and operator informed Educational content, not regulatory compliance advice. Verify against the current regulation text before relying on it. ## In this series ## Frequently asked questions ### What are support staff in a Part-145 organisation? Support staff hold an appropriately rated Part-66 licence in category B1, B2, B2L, B3 or L and work in base maintenance, without necessarily holding certification privileges. Under 145.A.35(a), they must adequately understand the relevant aircraft or components and the organisation's associated procedures. ### Who certifies base maintenance on complex motor-powered aircraft? Under 145.A.30(h)(1), base maintenance of complex motor-powered aircraft uses appropriately aircraft-type-rated category C certifying staff, supported by sufficient appropriately rated B1 and B2 staff. The support staff ensure relevant tasks meet the required standard before release. The exceptions in 145.A.30(j) remain applicable. ### How much recent experience do Part-145 certifying and support staff need? 145.A.35(c) requires at least six months of actual relevant aircraft or component maintenance experience in any consecutive two-year period. The evidence concerns maintenance work and exercising authorisation privileges or actually maintaining relevant systems; employment dates alone do not demonstrate that experience. ### How often do Part-145 certifying and support staff need recurrent training? 145.A.35(d) requires sufficient recurrent training in each two-year period. It must keep certifying and support staff up to date on relevant technologies, organisation procedures and safety management, including human factors. This is separate from the actual maintenance experience requirement in point (c). ### What follows the issue of a one-off Part-145 certification authorisation? The issuing organisation must report the case to the competent authority within seven days after issuing a one-off authorisation under 145.A.30(j)(5). It must also ensure that maintenance which could affect flight safety is re-checked by an appropriately approved organisation. ## Related - [EASA Part-145 Explained: The Approved Maintenance Organisation Guide · 4 min](https://avioverse.aero/guides/easa-part-145-approved-maintenance-organisation) - [Maintenance Data, Components and Performing the Work Guide · 8 min](https://avioverse.aero/guides/easa-part-145-maintenance-data-performance) - [Certification of Maintenance and Records under Part-145 Guide · 6 min](https://avioverse.aero/guides/easa-part-145-certification-of-maintenance-records) - [The Maintenance Organisation Exposition (MOE) Guide · 6 min](https://avioverse.aero/guides/easa-part-145-maintenance-organisation-exposition) - [Tool control and calibration under Part-145 Guide · 17 min](https://avioverse.aero/guides/part-145-tool-control-calibration-145-a-40) Written by Dionysis Kefalas. Retired Hellenic Air Force Captain and founder of Avioverse. [About the author](https://avioverse.aero/articles/author/dennis-kefalas) [Or request early access →](https://avioverse.aero/register?redirect=https%3A%2F%2Fapp.avioverse.aero%2Fcertifications) Share [LinkedIn](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Favioverse.aero%2Fguides%2Feasa-part-145-certifying-staff-personnel)[X](https://twitter.com/intent/tweet?url=https%3A%2F%2Favioverse.aero%2Fguides%2Feasa-part-145-certifying-staff-personnel\&text=Part-145%20Certifying%20and%20Support%20Staff)