Definition
The largest amount of flight or training time that may be counted toward the requirements of a specific certificate or rating, as set by the applicable Federal Aviation Regulation. Even if a pilot logs more than this amount in a particular category (such as simulator time, training device time, or training received from a specific source), only the regulation's stated maximum can be applied toward meeting that certificate or rating's aeronautical experience requirements.
Plain English
The cap on how much of a certain kind of flight time the FAA will let you count toward a checkride. You can log as much as you want, but only up to the limit will count for the certificate or rating you're chasing.
Context Anchor
Seen when logging training time or checking how much simulator, training device, or other approved experience can count toward a pilot requirement.
Derivation
From the everyday meaning of credit -- something allowed to count in your favor -- combined with maximum, the upper limit. Together: the most that's allowed to count.
Why Pilots Care
Keeps logged time compliant with regulatory limits so training records remain valid for certification.
Intuition Check
Do not read “credit” here as praise or a school grade. In this context, credit means time or experience that is allowed to count toward an FAA requirement.
Example Sentence 1
The regulation allows a maximum credit of 2.5 hours of flight training in an approved aviation training device toward the private pilot certificate.
Example Sentence 2
Simulator time received maximum credit only up to the limit specified for the instrument rating.