N85Z is not currently registered. It was last assigned to a Huber James M ROTORDYNE 200. The FAA cancelled the registration on May 11, 2000. The last status on file was "valid registration". The number has been on and off the register 3 times.
N85Z is reserved by Dynamic Avlease INC since February 10, 2017. Reservation type: Fee paid. An expiration notice was issued on December 10, 2026.
Huber James M ROTORDYNE 200 cancelled May 11, 2000
- Serial number
- 001
- Type
- Rotorcraft · Piston (reciprocating)
- Year built
- —
- Last status
- Valid registration
- Certificate issued
- December 31, 1997
- Last FAA action
- December 31, 1997
- Last owner
- Huber James M (Co-owned)
Kent, WA - Airworthiness
- None on file
Siewert Irving OSPREY GP-4 cancelled May 22, 1995
- Serial number
- 125
- Type
- Fixed-wing, single engine · Piston (reciprocating)
- Year built
- —
- Last status
- Triennial registration form was mailed and has not been returned by the Post Office
- Certificate issued
- April 21, 1992
- Last FAA action
- March 16, 1995
- Last owner
- Siewert Irving H (Individual)
Canon City, CO - Airworthiness
- None on file
Bell 47G-2 cancelled March 3, 1989
- Serial number
- 1241
- Type
- Rotorcraft · 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
NTSB accident and incident record under N85Z
Aircraft on the NTSB record: Rotordyne 200 · serial 1
The owner/builder's failure to properly torque the rotor blade retaining bolts.
Aircraft on the NTSB record: Irving Siewert OSPREY GP-4 · serial 125
FAILURE BY THE PILOT/BUILDER TO FOLLOW CONSTRUCTION SPECIFICATIONS AND THE USE OF IMPROPER MATERIALS DURING CONSTRUCTION OF THE AIRCRAFT.
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