Royal Air Force (RAF) Master Aircrew Warrant Officer Rank Badges

Master R.A.F. Aircrew WO facing badges. Anodised aluminium Albatros and padded cloth coat of arms. GC.

Master aircrew (MAcr) is the warrant-officer rank held by aircrew in the Royal Air Force. It is equivalent to warrant officer in other trades, and is effectively the highest non-commissioned aircrew rank. It has a NATO rank code of OR-9.

People holding this rank used to be referred to by different titles depending on their specialisation:

Master Signaller (MSig)
Master Engineer (MEng)
Master Air Electronics Operator (MAEOp)
Master Air Loadmaster (MALM).

Code: 2422