Description should include the following:
- 121.359(d): No person may operate a multiengine, turbine-powered airplane having a passenger seat configuration of 10-19 seats unless it is equipped with an approved cockpit voice recorder. This is required for
- large 4-engined turbine-powered planes
- large 4-engined pressurized planes
- multi-engined turbine-powered planes seating 10 or more passengers
- multi-engined turbine-powered rotorcraft seating 20 or more passengers
- multi-engined turbine-powered planes and rotorcraft seating six or more passengers and requiring two pilots.
- Relevant regulations include 14 CFR 121.359 and 14 CFR 125.227.
PLT388