---
title: "NCO.SPEC.MCF.125 Crew composition and persons on board — Part-NCO · Avioverse"
description: "The pilot-in-command shall identify the need for additional crew members or task specialists, or both, before each intended maintenance check flight…"
url: "https://avioverse.aero/regulations/easa/air-ops/part-nco/subpart-e/nco-spec-mcf-125"
---

# NCO.SPEC.MCF.125 Crew composition and persons on board

ANNEX VII (Part-NCO) · Regulation (EU) No 965/2012 · EAR revision 27 Mar 2026

IR Implementing rule

## NCO.SPEC.MCF.125 Crew composition and persons on board

(a) The pilot-in-command shall identify the need for additional crew members or task specialists, or both, before each intended maintenance check flight, taking into consideration the expected [flight crew member](https://avioverse.aero/glossary/easa/flight-crew-member) or [task specialist](https://avioverse.aero/glossary/easa/task-specialist) workload and the risk assessment.

(b) The pilot-in-command shall not allow persons on board other than those required under point (a) during a “Level A” maintenance check flight.

IR · NCO.SPEC.MCF.125 — Regulation (EU) No 965/2012 · Regulation (EU) 2019/1384 · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

GM Guidance material

## GM1 NCO.SPEC.MCF.125 Crew composition and persons on board

[TASK SPECIALIST](https://avioverse.aero/glossary/easa/task-specialist)

The task specialist should be trained as necessary in crew coordination procedures as well as emergency procedures and be appropriately equipped.

GM · GM1 NCO.SPEC.MCF.125 — Regulation (EU) No 965/2012 · ED Decision 2019/019/R · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

[All rules in SUBPART E: SPECIFIC REQUIREMENTS](https://avioverse.aero/regulations/easa/air-ops/part-nco/subpart-e)

Consolidated from the EASA Easy Access Rules (revision 27 Mar 2026, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.