Part 125 Minimum Equipment List

Part 125 Operations

An MMEL w/Procedures Is All You Really Need – Not An Expensive MEL

Contact Us About the MMEL Version

Because Part 125 is, for the most part, an oversized Part 91 operation, as such in the VAST MAJORITY of Part 125 operations all you need is OpSpec approval to use the MMEL as your MEL, so long as you have the (M) & (O) procedures, which for the most part you do have in the Dispatch Deviation Procedures Guide (DDPG) and supplemental documents, such as the configuration deviation guide, or similar manual.

Generally, then, we do this like an oversized MMEL project, tying in a large MMEL, with the (M) and (O) procedure documents and supplementing where there are holes, which is usually in the area of operator (O) procedures in communications and navigational (O)s, which are usually operator-specific, so there are some time and resources needed.

But once given the OpSpecs any future changes to the core MMEL (and in cases like the BBJ, especially the Mr. Potato Head versions of the early BBJs,) with a lot of changes each year, you will have mostly only to put in the front-end, the new MMEL and for the most part the backend, the (M) and (O)s, will not change, or rarely so and then there are only hourly charges, no contract fees.

We have completed the MELs for most of the Boeing fleet, except the Boeing 777, on down to single-engine airplanes and helicopters.

No contracts are needed as MMELs do not change often enough to waste the time and money on “contracts” for services you will likely never use.

Mostly for executive operations, but we also have cargo only versions.

What MELs Can We Do

We have a library of about 113 different aircraft makes and models MELs we have completed, but not all of them are updated so please send an email and ask if we have, or can do, the MEL on a specific aircraft for you. We should know within a few days and then if you want can work up a worksheet for you to start checking against the aircraft.

Online Full Hawker MEL Sample
Buy a full printed Hawker MEL sample on Amazon


Minimum Equipment List

Part 125 Minimum Equipment List issues can sometimes be troubling, depending on the FAA offices used and the combined experiences of the operator and the inspectors. We have developed complete MELs, including electronic versions such as found in Boeing Laptop Tools (BLT), for most of the larger aircraft. Our MEL library of completed versions is slightly over 110 aircraft types, from the B747 on down to single-engine airplanes and helicopters. We have not done a complete Boeing 777 nor 787 at this time.

This has included the Boeing fleets, of course, the BACs, and DC-6/9/10s, MDs and similar aircraft. Maybe an older Convair in there also.

For most Part 125-type aircraft we have past use, or factory guided (M) and (O) procedures and for the larger aircraft, usually using the Dispatch Deviation Procedures Guide (DDPG) and the Configuration Deviation List (CDL).

Part 125 Minimum Equipment List – Getting Started

However, having said that we need the operator’s input on what (M) and (O) procedures are workable for you. The (O)’s are usually not an issue, but the (M) procedures can be, so expect that you will have to work with our people to complete this.

To start a MEL we send you a worksheet that has information about installed STCs and a list from the MMEL that has the optional and variable items so you can indicate as to how many of those items you have installed. BUT, we need to have a discussion with you first to be sure we have a mutual understanding of any of the issues.


On the large aircraft we will likely need several weeks to first update our master files to the most current MMEL and then start to determine your equipment and issues with any of the procedures.

Some Helpful Links

FAA MEL References
FAA NEF Requirements
NBAA References
ICAO MEL Requirements