N21901 is not currently registered. It was last assigned to a Cobb Intl Inc/Dba Rotorway Int EXEC 162F built in 1995. The FAA cancelled the registration on November 12, 2003. The last status on file was "triennial registration form was mailed and has not been returned by the post office". The number has been on and off the register 4 times.
Cobb Intl Inc/Dba Rotorway Int EXEC 162F cancelled November 12, 2003
- Serial number
- RI6035
- Type
- Rotorcraft · Piston (reciprocating)
- Year built
- 1995
- Last status
- Triennial registration form was mailed and has not been returned by the Post Office
- Certificate issued
- July 11, 1994
- Last FAA action
- September 16, 2003
- Last owner
- Cobb International INC DBA (Corporation)
Chandler, AZ - Airworthiness
- Experimental · Market survey
Piper PA-34-200T cancelled March 22, 1990
- Serial number
- 347870452
- Type
- Fixed-wing, multi-engine · Piston (reciprocating)
- Year built
- —
- Last status
- N-number assigned but not yet registered
- Certificate issued
- —
- Last FAA action
- —
- Last owner
- Withheld
- Airworthiness
- None on file
Cessna 150L cancelled July 11, 1973
- Serial number
- 15074522
- Type
- Fixed-wing, single engine · Piston (reciprocating)
- Year built
- —
- Last status
- Valid registration
- Exported to
- Germany
- Certificate issued
- May 4, 1973
- Last FAA action
- —
- Last owner
- Cessnair Aviation INC (Corporation)
Long Beach, CA - Airworthiness
- None on file
Beech D17A cancelled date not given
- Serial number
- 361
- Type
- Fixed-wing, single engine · Piston (reciprocating)
- Year built
- —
- Last status
- Valid registration
- Certificate issued
- —
- Last FAA action
- —
- Last owner
- Withheld (Corporation)
- Airworthiness
- None on file
NTSB accident and incident record under N21901
Aircraft on the NTSB record: Rotorway Exec 165F · serial 6035
The tail rotor drive system failure as a result of incorrect installation procedures by the manufacturer's personnel.
Aircraft on the NTSB record: Rotorway EXEC 162F · serial RI6035
The inadequate maintenance inspection of the secondary shaft which resulted in its fatigue failure that emanated from a corroded circumferential score mark. A factor was the fence that the pilot flared to avoid, resulting in a hard landing.
A tail number passes between aircraft over the years; match the serial number on the NTSB record against the airframe above. Source: NTSB aviation accident database, records through September 30, 2026.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. See this number on the FAA site