Contents
What is CDL and Mel?
MEL (Minimum Equipment List) or CDL (Configuration Deviation List) refers to the situation where an aircraft has certain components on the airplane that are inoperative (e.g., MEL may be broken air-conditioning) or missing (e.g., CDL may be missing winglet).
What does Mel mean in aviation?
Minimum Equipment List
Best Practices. 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 a CDL FAA?
The CDL plays an important role in the operator’s ability to safely continue flight operations. It is a list of externally exposed airplane parts that may be missing for flight while the airplane remains airworthy. CDLs are developed by airplane manufacturers, approved by the FAA, and tailored for each model airplane.
Does a Cessna 172 have a Mel?
Doc Holliday Pattern Altitude. Doubt your 172 has a MEL. A Cessna 172 MEL has to be developed from the generic SE MMEL, then submitted to the FSDO for approval.
What are the types of MEL?
There are four different categories; A – the deferral period defined in the comments column of the MEL, B – three days, C – 10 days, and D – 120 days. In closing, to operate an aircraft with inoperative instruments or equipment you have to comply with the requirements of 14 CFR Part 91.213.
What is the difference between a 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 is deferred defect list?
Definition. An identified aircraft defect which has been assessed as being within the requirements of the Minimum Equipment List (MEL) or Configuration Deviation List and has had rectification deferred within a specified limit. Also referred to as a CFD (Carried Forward Defect)
What does the Mel mean on a CDL?
The MEL is used for EQUIPMENT failures (eg Pack inop, FMC, Rad Alt etc) and specifies the Minimum Equipments you can depart with.
What does CDL stand for in aviation category?
The CDL is a listing of regulator-approved non-structural external parts that may be missing but the airplane remains airworthy. To qualify an item onto the CDL, a restrictive set of conditions must be met, e.g.: The effect of the missing part upon adjacent structure and systems must be evaluated.
Can a Mel DDG be used for an aircraft?
You can use the DDG for the aircraft if so approved by your authority, but you need to know your aircraft as the DDG covers the entire series of say the B747 classic. MEL justs give the minimum required for dispatch.
What makes an item qualify for a CDL?
To qualify an item onto the CDL, a restrictive set of conditions must be met, e.g.: The effect of the missing part upon adjacent structure and systems must be evaluated. The effect upon airplane performance must be measured.