Airline Transport Pilot and Type Rating for Airplane Category › I. Preflight Preparation › Task A. Operation of Systems

AA.I.A.K17

Knowledge

How to use a Minimum Equipment List (MEL) and a Configuration Deviation List (CDL).

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Airplane Flying Handbook p. 16-25
Chapter 16: Transition to Jet-Powered Airplanes › Jet Airplane Systems and Maintenance › Minimum Equipment List
This authorizes the operation for a limited time before permanent repairs take…
Pilot's Handbook of Aeronautical Knowledge p. 9-10
Chapter 9: Flight Manuals and Other Documents › Minimum Equipment Lists (MEL) and Operations With Inoperative Equipment
tasks require a certificated and appropriately rated maintenance person to perform the deactivation. In all cases, the item or equipment must be placarded INOPERATIVE. All small rotorcraft, non-turbine powered airplanes, gliders, or lighter-than-air aircraft operated under ... maintenance deferral provisions of 14 CFR, part 91, section 91.213(d). However, once an operator requests an MEL, and a Letter of Authorization (LOA) is issued by the FAA, then the use of the MEL becomes mandatory for that aircraft…
Pilot's Handbook of Aeronautical Knowledge p. 14-31
Chapter 14: Airport Operations › Collision Avoidance › Pilot Deviations (PDs)
Pilot Deviations (PDs) A pilot deviation (PD) is an action of a pilot that violates any Federal Aviation Regulation. While PDs should be avoided, the regulations do authorize deviations from a clearance in response to a traffic alert and collision ... avoidance system resolution advisory. You must notify ATC as soon as possible following a deviation. Pilot deviations can occur in several different ways. Airborne deviations result when a pilot strays from an assigned heading or altitude or from an instrument…