What is the information indicated in an Mel?
An approved MEL consists of an approved list of the specific inoperative equipment for a particular make and model of aircraft by serial and registration mark, e.g. BEECH-200, VH-XXX, and its use is authorised by accepting the associated application procedures contained in an operator’s Maintenance Control Manual (MCM) …
What is the purpose of the Mel?
The Minimum Equipment List (MEL) is a document and method aircraft operators use to obtain relief from Federal Aviation Regulations requiring that all equipment installed on the aircraft be operative at the time of flight.
What is difference between MEL and CDL?
While the MEL describes the limitations of aircraft operation in case of a system being inoperative/having malfunctioned (e.g. transponder failure), the CDL deals with situations where external parts of an aircraft are missing/fallen off (e.g. fairings, aerodynamic seals or panels).
What is difference between Mel and MMEL?
Their difference is that the MEL is formulated for a particular operator and a certain aircraft or a few aircraft, whereas the MMEL is formulated for all aircrafts of this type. The MEL of the operator shall be based on the MMEL of a specific aircraft type and model approved by the authorities.
What does CDL mean in aviation?
configuration deviation list
A configuration deviation list (CDL) is a list, established by the organization responsible for the type design with the approval of the State of Design, which identifies any external parts of an aircraft type which may be missing at the commencement of a flight, and which contains, where necessary, any information on …
What does it mean to say something is on the Mel?
The MEL, minimum equipment list, defines whether fault of some equipment on the aircraft prevents it from being dispatched for flight or not. However, sometimes (e.g. in comments to this question) there is misunderstanding regarding what it means to say something is on the MEL. So, when I say something is on the MEL, does it mean that:
What does Mel stand for in maintenance category?
An MEL for a specific aircraft originates from a master minimum equipment list (MMEL). The MMEL is a list of all equipment on an aircraft type; it details which equipment is allowed to be inoperative without grounding the aircraft. (Think of a MMEL as a general, broader MEL.)
What is the reference point for the mel scale?
The mel scale (after the word melody) is a perceptual scale of pitches judged by listeners to be equal in distance from one another. The reference point between this scale and normal frequency measurement is defined by assigning a perceptual pitch of 1000 mels to a 1000 Hz tone, 40 dB above the listener’s threshold.
When do you use Mel on an aircraft?
MEL items are only applicable before your flight is dispatched. Once you are in the air you need to consult the aircraft QRH. The MMEL (Master Minimum Equipment List) is generic across a type of aircraft. e.g. Cessna Citation CE-500, CE-550, CE-560.