# N9645: 1928 Ford 5-AT-B

- Status: Valid registration
- Airframe: [Ford 5-AT-B](https://openairdocs.org/model/ford-5-at-b) (registry code 3590202, 17 seats)
- Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008)
- Data sheets: [TCDS ATC 156](https://openairdocs.org/tcds/ATC%20156) (Ford Motor Company) (OpenAirDocs)
- Serial number: 8
- Year built: 1928
- Type: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: June 3, 2019
- Certificate issued: March 13, 2014
- Expires: March 31, 2030
- Mode S code: AD6E09
- Registered owner: [Liberty Aviation Museum Inc](https://openairdocs.org/faa-owner/LIBERTY%20AVIATION%20MUSEUM%20INC)
- Location: [Port Clinton, OH](https://openairdocs.org/faa-place/OH/Port%20Clinton)
- Owner type: Corporation
- Owner's area on the map: 41.5065° N, 82.9533° W: Placed by OpenAirDocs at the center of ZIP code 43452, 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=9645
- Page: https://openairdocs.org/aircraft/N9645

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 Pratt & Whitney R-985 model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Ford 5-AT-B)

None in force.

### Matched by engine (Pratt & Whitney R-985 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N9645.

## FAA accident and incident reports

None matched to N9645.

## 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) (2)

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 airframe (Ford 5-AT-B)

- [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC
- [STC SA01282NY](https://openairdocs.org/stc/SA01282NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830. Airwolf Filter Corporation

## Related

- Other Ford 5-AT-B aircraft: https://openairdocs.org/model/ford-5-at-b/aircraft.md
- The Pratt & Whitney R-985 series engine: https://openairdocs.org/engine/pratt-whitney-r-985-series.md

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