--- title: "AWO.A.ALS.101 – AWO.A.CVS.101: SUBPART A -ENABLING EQUIPMENT SECTION 1 -AUTOMATIC LANDING SYSTEMS (ALSS) (CS-AWO) — rule index · Avioverse" description: "AWO.A.ALS.101 – AWO.A.CVS.101, CS-AWO. - (a) Subpart A Section 1 of this certification specification is applicable to aeroplanes, which are capable of…" url: "https://avioverse.aero/regulations/easa/cs-awo/subpart-a" --- # SUBPART A -ENABLING EQUIPMENT SECTION 1 -AUTOMATIC LANDING SYSTEMS (ALSS) All Weather Operations (CS-AWO) · CS-AWO · AWO.A.ALS.101 – AWO.A.CVS.101 On this page 1. ## [AWO.A.ALS.101 CS AWO.A.ALS.101 Applicability](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-101) \- (a) Subpart A Section 1 of this certification specification is applicable to aeroplanes, which are capable of automatic landing carried out in… 2. ## [AWO.A.ALS.102 CS AWO.A.ALS.102 Safety level](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-102) The safety level in automatic landing shall not be lower than that achieved in manual landing. 3. ## [AWO.A.ALS.103 CS AWO.A.ALS.103 Control actions](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-103) EQUIPMENT 4. ## [AWO.A.ALS.105 CS AWO.A.ALS.105 Automatic speed control](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-105) In the absence of failure or extreme conditions, the control actions of the system and the resulting aeroplane flight path shall not contain unusual… 5. ## [AWO.A.ALS.104 CS AWO.A.ALS.104 Approach speed](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-104) The approach speed to be used shall be established taking into account the accuracy with which speed is controlled. 6. ## [AWO.A.ALS.106 CS AWO.A.ALS.106 Performance demonstration](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-106) \- (a) The automatic landing system, under the conditions for which its use is to be approved, shall be demonstrated to achieve the performance accuracy… [AMC AWO.A.ALS.106 Performance demonstration](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-106#amc-awo-a-als-106-performance-demonstration) [AMC AWO.A.ALS.106 contains additional performance demonstration aspects for HUDLSs.](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-106#amc-awo-a-als-106-contains-additional-performance-demonstration-aspects-for) 7. ## [AWO.A.ALS.107 CS AWO.A.ALS.107 Aerodrome conditions](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-107) (See AMC AWO.A.ALS.108) If approval is sought to include automatic landing where the approach is initiated, and the landing made, with an inoperative… 8. ## [AWO.A.ALS.108 CS AWO.A.ALS.108 Approach and automatic landing with an inoperative engine](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-108) Easy Access Rules for All-Weather Operations (CS-AWO) - 5 For the purposes of this requirement, demonstration of automatic landing and go-around… [AMC AWO.A.ALS.108 Approach and automatic landing with an inoperative engine -Performance demonstration](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-108#amc-awo-a-als-108-approach-and-automatic-landing-with-an-inoperative-engine) 9. ## [AWO.A.ALS.109 CS AWO.A.ALS.109 Automatic landing distance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-109) CONTROLS, INDICATORS AND ALERTS [AMC AWO.A.ALS.109 Automatic landing distance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-109#amc-awo-a-als-109-automatic-landing-distance) 10. ## [AWO.A.ALS.110 CS AWO.A.ALS.110 Controls, indicators and alerts -General](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-110) The controls, indicators and alerts shall be designed to minimise flight crew errors which could create a hazard. [AMC AWO.A.ALS.110 Controls, indicators and alerts -General](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-110#amc-awo-a-als-110-controls-indicators-and-alerts-general) 11. ## [AWO.A.ALS.111 CS AWO.A.ALS.111 General](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-111) AEROPLANE FLIGHT MANUAL 12. ## [AWO.A.ALS.113 CS AWO.A.ALS.113 General](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-113) The effects of any failures of, or affecting, the approach and landing system shall be considered in accordance with CS 25.1309 and CS 25.1329. 13. ## [AWO.A.ALS.112 CS AWO.A.ALS.112 Failure of xLS navigation means (facilities external to the aircraft, including signal-in-space)](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-112) ED Decision 2022/007/R The aeroplane flight manual (AFM) shall contain the limitations, procedures and other information pertinent to the operation of… [AMC AWO.A.ALS.112 Failure of xLS navigation means (facilities external to the aircraft, including signal-in-space)](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-112#amc-awo-a-als-112-failure-of-xls-navigation-means-facilities-external-to-the) 14. ## [AWO.A.ALS.114 CS AWO.A.ALS.114 Wind speed limitations](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-114) Wind speed limitations higher than those established in showing compliance with CS AWO.A.ALS.106 may be specified in the AFM for decision heights (DHs)… 15. ## [AWO.A.ALS.115 CS AWO.A.ALS.115 Approach and automatic landing with an inoperative engine](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-als-115) If compliance with CS AWO.A.ALS.108 Approach and automatic landing with an inoperative engine (see AMC AWO.A.ALS.108) is established, a statement shall… 16. ## [AWO.A.HUD.101 CS AWO.A.HUD.101 Applicability and terminology](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-101) \- (a) A headup display (HUD) is a display system that presents flight information into the pilot's forward external field of view. [AMC AWO.A.HUD.101 Applicability and terminology](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-101#amc-awo-a-hud-101-applicability-and-terminology) 17. ## [AWO.A.HUD.102 CS AWO.A.HUD.102 Go-around](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-102) If a HUD (or equivalent display) is used for approach guidance, it shall provide sufficient information to permit the pilot to initiate and stabilise a… 18. ## [AWO.A.HUD.103 CS AWO.A.HUD.103 HUD (or equivalent display) information below decision height](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-103) (See AMC AWO.A.HUD.103) Information presented on the HUD (or equivalent display) below the decision height (DH) shall not mislead or distract the pilot… [AMC AWO.A.HUD.103 HUD information](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-103#amc-awo-a-hud-103-hud-information) 19. ## [AWO.A.HUD.104 CS AWO.A.HUD.104 Control of take-off roll, flight path and ground roll](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-104) \- (d) For take-off roll, the HUD (or equivalent display) shall meet the performance requirements of CS AWO.C.TOO.106. 20. ## [AWO.A.HUD.105 CS AWO.A.HUD.105 Presentation of information to the flight crew](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-105) (See AMC AWO.A.ALS.110) - (a) Where a HUD (or equivalent display) is used to display approach guidance, the following shall apply: 21. ## [AWO.A.HUD.107 CS AWO.A.HUD.107 Performance demonstration](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-107) (See AMC AWO.A.HUD.107) - (a) When a HUDLS is used for primary guidance (HUD manual landing), the following additional variables shall be included in the… [AMC AWO.A.HUD.107 Performance demonstration](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-107#amc-awo-a-hud-107-performance-demonstration) 22. ## [AWO.A.HUD.106 CS AWO.A.HUD.106 Flight data recording](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-106) Where a HUD (or equivalent display) is installed, a 'HUD in use' parameter and, if applicable, the mode of the HUD operation shall be recorded on the… 23. ## [AWO.A.HUD.108 CS AWO.A.HUD.108 Fail-operational hybrid landing systems](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-108) Where a HUDLS is fitted as part of a hybrid system, its performance does not need to meet the same criteria as the primary system, provided that it: 24. ## [AWO.A.HUD.109 CS AWO.A.HUD.109 Head-up display landing systems](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-109) For HUDLSs that are used for primary guidance (HUD manual landing) during Category III operations (see Subpart B Section 4), the following are required: 25. ## [AWO.A.HUD.110 CS AWO.A.HUD.110 Head-up displays used for enhanced flight vision systems](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-110) \- (a) HUDs (or equivalent displays) used to display enhanced flight vision system (EFVS) imagery shall have a field of regard (FOR) that is appropriate… 26. ## [AWO.A.HUD.111 CS AWO.A.HUD.111 Head-up displays used for synthetic vision guidance systems](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-111) A HUD (or equivalent display) used in a synthetic vision guidance system (SVGS) shall: 27. ## [AWO.A.HUD.112 CS AWO.A.HUD.112 Head-up display landing distance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-112) If there is any feature of the HUD (e.g. flare cue) or the associated procedures intended to support the flare manoeuvre for landing which would result… [AMC AWO.A.HUD.112 HUD landing distance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-112#amc-awo-a-hud-112-hud-landing-distance) 28. ## [AWO.A.HUD.113 CS AWO.A.HUD.113 Flare cue performance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-113) \- (a) The use of the flare cue must provide for acceptable performance in all conditions for which it is intended to be used. [AMC1 AWO.A.HUD.113 Criteria for acceptable landing performance using a flare cue](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-113#amc1-awo-a-hud-113-criteria-for-acceptable-landing-performance-using-a-flare-cue) [AMC2 AWO.A.HUD.113 Conditions for the demonstration of an acceptable landing with flare cue](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-113#amc2-awo-a-hud-113-conditions-for-the-demonstration-of-an-acceptable-landing) 29. ## [AWO.A.HUD.114 CS AWO.A.HUD.114 Assessment of the failure conditions relating to the use of flare cues](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-114) An assessment of the effects of failure conditions relating to the use of the flare cue shall be conducted in accordance with CS 25.1309. [AMC AWO.A.HUD.114 Assessment of the failure conditions associated with the use of the flare cue](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-hud-114#amc-awo-a-hud-114-assessment-of-the-failure-conditions-associated-with-the-use) 30. ## [AWO.A.EFVS.101 CS AWO.A.EFVS.101 General](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-101) \- (a) An enhanced flight vision system (EFVS) uses an electronic means to provide a real-time display of the forward external scene topography through… [AMC AWO.A.EFVS.101 General](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-101#amc-awo-a-efvs-101-general) 31. ## [AWO.A.EFVS.102 CS AWO.A.EFVS.102 Enhanced flight vision system designation](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-102) \- (a) An enhanced flight vision system -approach (EFVS-Approach (EFVS-A)) is a system that has been demonstrated to meet the criteria to be used for… 32. ## [AWO.A.EFVS.103 CS AWO.A.EFVS.103 Enhanced flight vision system depiction](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-103) \- (a) The enhanced flight vision system (EFVS) sensor imagery and the following flight symbology shall be presented so that they are aligned with and… [AMC AWO.A.EFVS.103 EFVS depiction](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-103#amc-awo-a-efvs-103-efvs-depiction) 33. ## [AWO.A.EFVS.104 CS AWO.A.EFVS.104 Enhanced flight vision system display](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-104) \- (a) The display of the enhanced flight vision system (EFVS) image on the HUD (or equivalent display) shall not hinder or compromise the pilot's ability… [AMC AWO.A.EFVS.104 EFVS display](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-104#amc-awo-a-efvs-104-efvs-display) 34. ## [AWO.A.EFVS.105 CS AWO.A.EFVS.105 Head-up display enhanced flight vision system (HUD EFVS) symbology](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-105) \- (a) In addition to sensor imagery, the flight instrument data that is displayed on the HUD (or equivalent display) shall, as a minimum, include: [AMC1 AWO.A.EFVS.105 HUD EFVS symbology](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-105#amc1-awo-a-efvs-105-hud-efvs-symbology) 35. ## [AWO.A.EFVS.106 CS AWO.A.EFVS.106 Enhanced flight vision system (EFVS) display controls](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-106) \- (a) A means of controlling the EFVS display contrast/brightness shall be provided that prevents: [AMC AWO.A.EFVS.106 EFVS display controls](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-106#amc-awo-a-efvs-106-efvs-display-controls) 36. ## [AWO.A.EFVS.107 CS AWO.A.EFVS.107 Enhanced flight vision system (EFVS) safety assessment](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-107) \- (a) The normal operation of the EFVS shall not adversely affect, or be adversely affected by, other aircraft systems. [AMC AWO.A.EFVS.107 EFVS safety assessment](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-107#amc-awo-a-efvs-107-efvs-safety-assessment) 37. ## [AWO.A.EFVS.108 CS AWO.A.EFVS.108 Enhanced flight vision system (EFVS) level of safety](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-108) \- (a) The safety design goals for airworthiness approval shall be established and shall consider the phase of flight and include the required: [AMC AWO.A.EFVS.108 EFVS level of safety](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-108#amc-awo-a-efvs-108-efvs-level-of-safety) 38. ## [AWO.A.EFVS.109 CS AWO.A.EFVS.109 Enhanced flight vision system (EFVS) performance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-109) \- (a) A performance demonstration and evaluation of the enhanced flight vision system (EFVS) shall be performed, and shall include demonstrations of: [AMC1 AWO.A.EFVS.109 EFVS performance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-109#amc1-awo-a-efvs-109-efvs-performance) 39. ## [AWO.A.EFVS.110 CS AWO.A.EFVS.110 Enhanced flight vision system -landing (EFVS-L) -Landing performance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-110) \- (a) The lateral and longitudinal touchdown performance of an EFVS-L system shall be demonstrated and shall be equivalent to or better than that… [AMC1 AWO.A.EFVS.110 EFVS-L landing performance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-110#amc1-awo-a-efvs-110-efvs-l-landing-performance) [AMC2 AWO.A.EFVS.110 Acceptable landing performance criteria for EFVS-Ls](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-110#amc2-awo-a-efvs-110-acceptable-landing-performance-criteria-for-efvs-ls) 40. ## [AWO.A.EFVS.111 CS AWO.A.EFVS.111 Enhanced flight visual system (EFVS) monitoring, annunciation and alerting](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-111) Failure messages EFVS malfunctions detected by the system, and which can adversely affect the normal operation of the EFVS, should be annunciated. [AMC AWO.A.EFVS.111 EFVS monitoring, annunciation and alerting](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-111#amc-awo-a-efvs-111-efvs-monitoring-annunciation-and-alerting) 41. ## [AWO.A.EFVS.112 CS AWO.A.EFVS.112 Enhanced flight vision system (EFVS) documentation](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-112) The demonstrated capability and any specific EFVS limitations shall be included within the relevant AFM section. [AMC AWO.A.EFVS.112 EFVS documentation](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-efvs-112#amc-awo-a-efvs-112-efvs-documentation) 42. ## [AWO.A.SVGS.101 CS AWO.A.SVGS.101 Applicability and terminology](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-101) A synthetic vision guidance system (SVGS) is an installed airborne system that comprises the following elements: [AMC AWO.A.SVGS.101 General](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-101#amc-awo-a-svgs-101-general) 43. ## [AWO.A.SVGS.102 CS AWO.A.SVGS.102 Synthetic vision guidance system (SVGS) scene depiction](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-102) The SVGS primary display at each pilot station shall provide: 44. ## [AWO.A.SVGS.103 CS AWO.A.SVGS.103 Minimum requirements for synthetic vision guidance system (SVGS) flight instrument displays](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-103) Pilots operating the aircraft from their normal seated position shall be provided with the following SVGS displays features and characteristics: 45. ## [AWO.A.SVGS.104 CS AWO.A.SVGS.104 Command guidance](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-104) Command guidance cues (flight director) shall meet the required flight technical error performance and accuracy for the intended operation (see CS-AWO… 46. ## [AWO.A.SVGS.105 CS AWO.A.SVGS.105 Synthetic vision guidance system (SVGS) Use of a head-up display or equivalent display](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-105) A HUD (or equivalent display) used in an SVGS shall meet the requirements of Subpart A Section 2 HUD for the intended operation, in particular CS… 47. ## [AWO.A.SVGS.106 CS AWO.A.SVGS.106 Field of regard (FOR)](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-106) The field of regard (FOR) of a HUD (or equivalent display) or a head-down display (HDD) used to display the SVGS depiction shall support the intended… 48. ## [AWO.A.SVGS.107 CS AWO.A.SVGS.107 Head-down display (HDD) minification](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-107) For a SVGS implemented on head-down primary displays, the minification ratio shall be shown to be satisfactory. 49. ## [AWO.A.SVGS.108 CS AWO.A.SVGS.108 Information provided to the flight crew](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-108) Sufficient information shall be provided to the flight crew to enable them to monito r the system's status and the approach operation's progress and… 50. ## [AWO.A.SVGS.109 CS AWO.A.SVGS.109 Annunciation of the synthetic vision guidance system's (SVGS) mode and status](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-109) The flight crew shall be provided with a means to determine the capability of the airborne system elements to accomplish the approach operation prior to… 51. ## [AWO.A.SVGS.110 CS AWO.A.SVGS.110 Synthetic view guidance system (SVGS) fault detection and alerting](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-110) The SVGS shall provide an automatic means to detect hazardously misleading guidance signals and alert the pilot to such signals. 52. ## [AWO.A.SVGS.111 CS AWO.A.SVGS.111 Flight technical error](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-111) The lateral and vertical tracking performance shall be appropriate and comply with the performance requirements for the intended operation (see CS… 53. ## [AWO.A.SVGS.112 CS AWO.A.SVGS.112 Navigation system error](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-112) In order to ensure the required accuracy and integrity of the guidance and the SVGS scene depiction, the navigation system or position error shall be… 54. ## [AWO.A.SVGS.113 CS AWO.A.SVGS.113 Databases -general](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-113) SVGS FLIGHT DISPLAY ELEMENTS 55. ## [AWO.A.SVGS.114 CS AWO.A.SVGS.114 Minimum display size](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-114) SVGS FLIGHT DISPLAY PERFORMANCE 56. ## [AWO.A.SVGS.116 CS AWO.A.SVGS.116 Latency](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-116) For any database such as terrain, runway or obstacle that are used for SVGS scene depiction, a consistent set of data quality requirements (DQRs) shall… 57. ## [AWO.A.SVGS.115 CS AWO.A.SVGS.115 HUD SVGS -pilot controls](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-115) Manual or automatic SVGS scene depiction contrast (if provided) and/or brightness controls shall be effective in dynamically changing background… 58. ## [AWO.A.SVGS.117 CS AWO.A.SVGS.117 Jitter](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-117) The jitter amplitude of the displayed SVGS image shall be less than 0.6 milliradian (mrad). 59. ## [AWO.A.SVGS.118 CS AWO.A.SVGS.118 Flicker](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-118) The SVGS display refresh rate shall preclude both the appearance of unacceptable flicker (brightness variations at a frequency above 0.25 Hz) and any… 60. ## [AWO.A.SVGS.119 CS AWO.A.SVGS.119 Image artefacts](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-119) Undesirable display artefacts and characteristics shall be minimised so that the information is still readable and identifiable under all foreseeable… 61. ## [AWO.A.SVGS.120 CS AWO.A.SVGS.120 HUD (or equivalent display) processing error](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-120) The generation of the SVGS depiction shall not result in a scene display error greater than 5 mrad at the centre of the display, independent of sensor… 62. ## [AWO.A.SVGS.121 CS AWO.A.SVGS.121 SVGS scene depiction alignment](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-121) There shall be no discernible image misalignment caused by lateral, vertical, or longitudinal offset of the computed SVGS reference point from the design… 63. ## [AWO.A.SVGS.122 CS AWO.A.SVGS.122 Aircraft position monitoring and alerting](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-122) The SVGS shall provide a means of monitoring the difference between the intended flight path and the actual flight path. 64. ## [AWO.A.SVGS.123 CS AWO.A.SVGS.123 Excessive deviation](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-123) An alert shall be displayed to the pilot when the lateral and vertical deviation exceeds the acceptable limits from the guidance being followed. 65. ## [AWO.A.SVGS.124 CS AWO.A.SVGS.124 Annunciation of the system's mode and status](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-124) Any detected SVGS malfunction that can adversely affect the normal operation of the SVGS shall be visually annunciated to the flight crew. 66. ## [AWO.A.SVGS.125 CS AWO.A.SVGS.125 Determination of the missed approach point (MAPt)](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-125) The SVGS shall provide a clear and unambiguous means to inform the pilot when they pass through the point/altitude at which the visual external cues… 67. ## [AWO.A.SVGS.126 CS AWO.A.SVGS.126 Altimetry requirements](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-126) The SVGS display shall include a radio altitude display or another system that provides height above terrain with equivalent performance, accuracy… 68. ## [AWO.A.SVGS.127 CS AWO.A.SVGS.127 Barometric altimeter / air data source](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-127) The altitude source used for the SVGS display shall be consistent with that used for the on-board terrain awareness and alerting system on the aircraft… 69. ## [AWO.A.SVGS.128 CS AWO.A.SVGS.128 Geometric altimetry/GPS data source](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-128) If geometric/GPS altimetry is used, it shall display geometric altitude relative to mean sea level (MSL). 70. ## [AWO.A.SVGS.129 CS AWO.A.SVGS.129 Depiction of terrain and runway of intended landing](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-129) The SVGS shall provide a means of integrating the runway and terrain data, and the terrain in the area surrounding the runway shall not be depicted… 71. ## [AWO.A.SVGS.130 CS AWO.A.SVGS.130 SVGS scene depiction positioning](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-130) The SVGS scene depiction positioning sensor shall meet the required positioning performance criteria for the intended operation. 72. ## [AWO.A.SVGS.131 CS AWO.A.SVGS.131 System safety objectives](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-131) The SVGS shall be shown to safely perform its intended function for each operation and phase of flight for which it will be used, and shall comply with… 73. ## [AWO.A.SVGS.132 CS AWO.A.SVGS.132 Overall system safety design criteria](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-132) The SVGS shall be shown to meet the performance and integrity requirements applicable to the intended type of operation (CS-AWO Subpart B Section 2 SA… 74. ## [AWO.A.SVGS.133 CS AWO.A.SVGS.133 Flight data recorder (FDR)](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-133) If a flight data recorder is required to be installed, then the modes of the SVGS operation shall be recorded. 75. ## [AWO.A.SVGS.134 CS AWO.A.SVGS.134 SVGS documentation](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-svgs-134) The demonstrated capability and any specific SVGS limitations shall be included within the relevant AFM section. 76. ## [AWO.A.CVS.101 CS AWO.A.CVS.101 General](https://avioverse.aero/regulations/easa/cs-awo/subpart-a/awo-a-cvs-101) \- (a) Combined vision systems (CVSs) combine a real-time imaging sensor and a display with a synthetic image generated using a terrain, runway and… Consolidated from the EASA Easy Access Rules (revision 14 Aug 2026, extracted 13 Oct 2026) for convenience. 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