Private Pilot Flight Training and Instruction Flight Training Article Library | Back To 4VFR.COM Operating Without a MEL (Minimum Equipment List) Minimum Equipment List Most older aircraft have been certified without a MEL but everything operational when the aircraft was certified must be operational for flight--including the cigarette lighter and tire pressure. Without an MEL any inoperative item must be removed or deactivated and then placarded. A certificated mechanic must do the work, adjust the weight and balance, complete FAA Form 337 and approve for return to service. Written by Gene Whitt Flight Training Article Library | Back To 4VFR.COM