Uhlenberg Donald M GREAT LAKES 2T1A
N51DU is an Uhlenberg Donald M GREAT LAKES 2T1A, a fixed-wing airplane with one motor with a piston engine, built in 1988. It has 2 seats. It is registered to an individual in Grand Forks, North Dakota. The registration is valid: it was issued on September 5, 2008 and expires on June 30, 2028. It holds an experimental airworthiness certificate for amateur built, dated September 1, 1988.
Aircraft
- Maker
- Uhlenberg Donald M
- Model
- GREAT LAKES 2T1A
- Serial number
- 7125-H519
- Type
- Fixed-wing, single engine
- Power
- Piston (reciprocating), 1 motor · Lycoming O&VO-360 SER · 180 hp
- Seats
- 2
- Year built
- 1988
- Transponder code
- A65F74 (octal 51457564)
Registration
- Status
- Valid registration
- Certificate issued
- September 5, 2008
- Expires
- June 30, 2028
- Last FAA action
- May 19, 2023
- Airworthiness
- Experimental · Amateur built · September 1, 1988
- FAA region
- Great Lakes
- FAA record id
- 00933365
Owner as the FAA publishes it
- Name
- Okeefe William G
- Type
- Individual
- Address
- 3721 Simonview Ct
Grand Forks, ND 58201-7611
Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.
Documents on file 0
No bills of sale, loans or other documents are indexed against this tail number.
Records check free · 0 to understand · 5 clear
The public federal record on N51DU, read the way a buyer, lender or insurer reads it: FAA registration, prior tail numbers keyed on the serial number, reuse of the tail number, recent registry filings, and the NTSB accident record under this and every earlier registration.
Valid registration to Okeefe William G, an individual, certificate issued September 5, 2008, expires June 30, 2028. No fractional interest recorded. [1]
Experimental certificate for amateur built, dated September 1, 1988, consistent with the 1988 manufacture year. [1]
No earlier tail number is recorded against serial 7125-H519 for this model in the deregistered file. [2]
No other airframe has carried N51DU according to the deregistered file. [2]
No bills of sale, loans or releases have reached the registry in recent weeks. The index covers only recent filings; older liens are in the records file. [3]
No NTSB investigation records located under N51DU. CLEAR means the query ran and returned nothing, not that nothing ever happened. [4]
These live in the FAA aircraft records file (every document ever filed against the aircraft) and, for larger aircraft, the International Registry. Part of the full report.
AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.
- FAA Releasable Aircraft Database, master file, file of October 2, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 2, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 2, 2026. registry.faa.gov/
- NTSB aviation accident database (CAROL), records through August 27, 2026. data.ntsb.gov/carol-main-public/basic-search
This automated check reads the public federal record. Nothing here is a legal opinion, an appraisal or a statement about the aircraft's condition; a CLEAR line is a statement about the searched record, not the aircraft.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. See this record on the FAA site · This record as data