# N75M: 1989 Sergent Don L GREAT LAKES 2T1A

- Status: Valid registration
- Airframe: [Sergent Don L GREAT LAKES 2T1A](https://openairdocs.org/model/sergent-don-l-great-lakes-2t1a) (registry code 05645F2, 2 seats)
- Engine: [Fairchild 6-440 series](https://openairdocs.org/engine/fairchild-6-440-series) (registry code 26003)
- Data sheets: [TCDS E-216](https://openairdocs.org/tcds/E-216) (Fairchild Engine Division Fairchild Engine and Airplane Corp.) (OpenAirDocs)
- Serial number: 6914-G-408
- Year built: 1989
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: August 18, 1994
- Certificate issued: December 1, 1993
- Expires: January 31, 2029
- Mode S code: AA18C3
- Registered owner: [Dougherty Paul D Jr](https://openairdocs.org/faa-owner/DOUGHERTY%20PAUL%20D%20JR)
- Location: [Bethel, PA](https://openairdocs.org/faa-place/PA/Bethel)
- Owner type: Individual
- Owner's area on the map: 40.5052° N, 76.2703° W: Placed by OpenAirDocs at the center of ZIP code 19507, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=75M
- Page: https://openairdocs.org/aircraft/N75M

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Fairchild 6-440 model are included.

## ADs that may apply (OpenAirDocs): 2 in force

### Matched by airframe (Sergent Don L GREAT LAKES 2T1A)

None in force.

### Matched by engine (Fairchild 6-440 series)

- [AD 54-09-01](https://openairdocs.org/ad/54-09-01): Carburetor Hotspot Heater Assembly · Fairchild Engine Division, Fairchild Engine and 6-440-C2 (L-440-1), 6-440-C3, 6-440-C4 and 1 more
- [AD 52-03-01](https://openairdocs.org/ad/52-03-01): Pistons · Fairchild Engine Division, Fairchild Engine and 6-440-C2 (L-440-1), 6-440-C3, 6-440-C4 and 1 more

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N75M.

## FAA accident and incident reports

None matched to N75M.

## Reports on N75M not matched to an aircraft (1)

They name N75M, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19790322011569I](https://openairdocs.org/incident/19790322011569I), Mar 22, 1979: Gulstm G159 (N75M), Detroit, MI. Fire warning occurred on #2 engine. Pilot feathered engine, returned to airport. No evidence of any fire.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs) (6)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (Fairchild 6-440 series)

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC. Lists 6-440-C2 (L-440-1)
- [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc. Lists 6-440-C2 (L-440-1)
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc
- [STC SE1-201](https://openairdocs.org/stc/SE1-201): Installation of the Richter Aero Equipment Type B-4 or B-5 Temperature Probe. (O-360 SERIES (excl. A1C, C2B, C2D)). MidContinent Instru Co Inc. Lists 6-440-C5
- [STC SE00129WI](https://openairdocs.org/stc/SE00129WI): Approved fuel: Unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index(RON+MON)/2, per ASTM Spec D-439. Petersen Aviation Inc. Lists 6-440-C2
- [STC SE519AL](https://openairdocs.org/stc/SE519AL): Installation of Ramsey Corporation piston rings. Aircraft Rebuilders, Inc. Lists 6-440-C5

## Earlier aircraft with N75M

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N75M before.

- [Cancelled 1930-05-22](https://openairdocs.org/deregistered/N75M-1930-05-22): White Eagle Acft & Motor WHITE EAGLE, S/N 101. Owner: [White Eagle Aircraft & Motor Corp](https://openairdocs.org/faa-owner/WHITE%20EAGLE%20AIRCRAFT%20%26%20MOTOR%20CORP), [Los Angeles, CA](https://openairdocs.org/faa-place/CA/Los%20Angeles)

## Related

- Other Sergent Don L GREAT LAKES 2T1A aircraft: https://openairdocs.org/model/sergent-don-l-great-lakes-2t1a/aircraft.md
- The Fairchild 6-440 series engine: https://openairdocs.org/engine/fairchild-6-440-series.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.