Frequently Asked Questions

What type of aircraft does Aerodox write MELs for?

Aerodox can create custom MELs for all aircraft types and sizes. We have extensive experience authoring MELs for 14 CFR Parts:

91 (D095 and D195)
121
125
135

We are also very familiar with and have written MELs for various authorities around the world.

What is an MMEL?

A Master Minimum Equipment List (MMEL) as developed by various regulatory authorities (e.g. FAA, EASA, Transport Canada, ANAC) establishes the basis for the development of the individual Operator’s MEL. The MMEL identifies items of equipment that can be inoperative while the aircraft continues to operate with an acceptable level of safety, once the MMEL items and all associated MMEL limitations are included as part of the Operator’s MEL.

What is an MEL?

An Aerodox MEL, or Minimum Equipment List, is a document customized to your aircraft, incorporating:

Required information from the MMEL
Manufacturer’s Procedures documents
Definitions
Preamble and more

Our MEL provides what, if any restrictions that may be imposed on the aircraft and how long an item can be inoperative in accordance with acceptable safety levels, and provides necessary procedures all in one user-friendly format. In some cases, a Configuration Deviation List (CDL) may be included with the MEL. Contents of the CDL are items found in the AFM appendix generally for parts that are missing from the exterior of the aircraft.

What are Maintenance and Operations Procedures?

Maintenance and Operations Procedures are developed by the manufacturer and operator as a contingency for operating with inoperative equipment. Aerodox publishes the manufacturer’s and or operator’s developed procedures in an easy to read format within the customer’s MEL.

Do I need an MEL?

If you are flying a Rotorcraft, Non-Turbine-Powered Airplane, Glider, Lighter-Than-Air Aircraft, Powered Parachute, or Weight-Shift-Control Aircraft, for which a Master Minimum Equipment List (MMEL) has not been developed, you do NOT need an MEL. If you are flying one of these type aircraft, or any other not previously listed, for which a Master Minimum Equipment List has been developed, you WILL need an MEL.
Bottom line is, you most likely do need an MEL. Either that, or most of the equipment installed on your aircraft MUST be operative.

What is the difference between D095 and D195?

A D095 Letter of Authorization (LOA) is for Part 91 operations utilizing the MMEL as an MEL. However, you must still have all of the required parts shown in the D095 LOA, not just the MMEL.

A D195 Letter of Authorization (LOA) authorizes the use of a custom MEL that is approved by your local FAA inspector. This MEL includes all of the same requirements of the D095 document, but is customized to the operator’s specific aircraft.