FAA Aircraft Dispatcher (ADX)Regulations (Part 121)Easy
A Part 121 certificate holder conducts scheduled passenger service entirely within the 48 contiguous United States and the District of Columbia, using large transport-category airplanes. Under 14 CFR Part 121, this type of operation is classified as a:
- AFlag operation
- BCommuter operation
- CDomestic operation
- DSupplemental operation
Show answer & explanationAnswer & explanation
Correct answer: C. Domestic operation
14 CFR 121.1 and related definitions classify scheduled passenger operations conducted within the 48 contiguous states and D.C. as domestic operations. Flag operations involve service outside the contiguous 48 states/D.C. or beyond specified distances, and supplemental operations are generally nonscheduled (charter-type) operations.
Why the other options are wrong
- A. Flag operations involve international or long-distance routes outside the contiguous 48 states.
- B. Commuter is not a distinct Part 121 operational classification under this rule.
- D. Supplemental operations are nonscheduled, charter-type operations.
Domestic Operation (Part 121)
Scheduled Part 121 passenger/cargo service conducted within the 48 contiguous United States and the District of Columbia.
- Domestic = scheduled, within 48 states + D.C.
- Flag = scheduled, outside that area or long distance routes
- Supplemental = nonscheduled/charter operations
Memory trick: D-F-S: Domestic stays home, Flag flies far, Supplemental is spontaneous.