FAA Aircraft Dispatcher (ADX)Regulations (Part 121)Medium
Under 14 CFR 121.319, a crewmember interphone system is required to connect the flight crew compartment with which location(s)?
- AEach required flight attendant station, on airplanes with a passenger seating capacity of more than 19
- BThe cockpit and the crew rest area only
- CEach required flight attendant station, regardless of passenger seating capacity
- DOnly the aft galley, and only on airplanes used in extended overwater operations
Show answer & explanationAnswer & explanation
Correct answer: A. Each required flight attendant station, on airplanes with a passenger seating capacity of more than 19
14 CFR 121.319 requires a crewmember interphone system connecting the flight crew compartment with each required flight attendant station, for airplanes having a passenger seating capacity of more than 19.
Why the other options are wrong
- B. Crew rest areas are not the defining connection points under this rule.
- C. The requirement is tied to the 19-seat threshold, not all airplanes regardless of size.
- D. The requirement is not limited to extended overwater operations or the aft galley only.
Interphone System (121.319)
Airplanes with more than 19 passenger seats must have a crewmember interphone system connecting the flight crew compartment with each required flight attendant station.
- Threshold: more than 19 passenger seats
- Connects cockpit to each required FA station
- Separate from the passenger-facing PA system (121.318)
Memory trick: 'Nineteen seats, interphone greets.'