Definition
An FAA Advisory Circular that provides guidance to pilots, flight instructors, and ground instructors on the certification standards, endorsements, and procedures contained in 14 CFR Part 61. It includes sample endorsement language that instructors use when signing off students for solo flight, checkrides, knowledge tests, and other certification milestones.
Plain English
An FAA guidance document that tells instructors exactly what wording to write in a student's logbook when they approve them for things like a first solo or a checkride. It is the standard reference for instructor sign-offs.
Context Anchor
Seen when instructors are checking required endorsements for solo flight, tests, instructor renewals, or other certification steps.
Derivation
AC' stands for Advisory Circular, the FAA's standard format for non-regulatory guidance material. The number '61-65' identifies the subject area (Part 61, pilot certification) and the document's sequence within that area. A trailing letter (such as 61-65H) identifies the current revision.
Why Pilots Care
Instructors and pilots consult it to stay aligned with current FAA expectations for training, testing, and certificate maintenance.
Intuition Check
Do not read advisory as unimportant. AC 61-65 is guidance, but instructors rely on it because it shows FAA-accepted wording and procedures for endorsements.
Example Sentence 1
Before signing the student off for solo, the instructor checked AC 61-65 to make sure the endorsement wording matched the current revision.
Example Sentence 2
Updates to AC 61-65 sometimes change how flight instructors document student progress.