Definition
An FAA-issued document that lists the specific maintenance authorizations, limitations, and procedures granted to a certificated maintenance provider or operator. In the context of an Electronic Flight Bag, an MSpec defines the approved methods for keeping EFB hardware and software current, serviceable, and authorized for use in flight operations.
Plain English
An official FAA paper that spells out exactly what maintenance an operator is allowed to do, how they must do it, and the rules they have to follow. For EFBs, it covers how the device and its software must be kept up to date and working properly.
Context Anchor
Seen in FAA authorization discussions for electronic flight bags, especially where an operator must show that the EFB is controlled, updated, and maintained correctly.
Why Pilots Care
Ensures EFB systems remain reliable and compliant with regulations throughout their operational life.
Intuition Check
Do not read maintenance specification as a general repair manual. Here it means an official set of FAA-related requirements that controls how the operator maintains and manages the authorized equipment or system.
Example Sentence 1
Before each flight, the dispatcher confirmed the EFB software updates had been applied per the company's MSpec.
Example Sentence 2
Changes to the aircraft's EFB setup required an update to the maintenance specification (MSpec).