# N5SF: 1939 Grumman J2F6

- Status: Valid registration
- Airframe: [Grumman J2F6](https://openairdocs.org/model/grumman-j2f6) (registry code 3950208, 2 seats)
- Engine: [Wright R-1820 series](https://openairdocs.org/engine/wright-r-1820-series) (registry code 67020)
- Data sheets: [TCDS LTC-17](https://openairdocs.org/tcds/LTC-17) (Utterback B.) (OpenAirDocs)
- Serial number: 33594
- Year built: 1939
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Limited
- Airworthiness date: March 13, 2002
- Certificate issued: June 21, 2000
- Expires: July 31, 2027
- Mode S code: A636D4
- Registered owner: [Comanche Warbirds Inc](https://openairdocs.org/faa-owner/COMANCHE%20WARBIRDS%20INC)
- Location: [Houston, TX](https://openairdocs.org/faa-place/TX/Houston)
- Owner type: Corporation
- Owner's area on the map: 29.7536° N, 95.6420° W: Placed by OpenAirDocs at the center of ZIP code 77077, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5SF
- Page: https://openairdocs.org/aircraft/N5SF

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 Wright R-1820 model are included.

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

### Matched by airframe (Grumman J2F6)

None in force.

### Matched by engine (Wright R-1820 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N5SF.

## FAA accident and incident reports

None matched to N5SF.

## 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) (5)

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 (Grumman J2F6)

- [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC
- [STC SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc
- [STC SA04776NY](https://openairdocs.org/stc/SA04776NY): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc
- [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation
- [STC SA01406NY](https://openairdocs.org/stc/SA01406NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and rotary wing. Airwolf Filter Corporation

## Earlier aircraft with N5SF

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N5SF before.

- [Cancelled 1988-11-23](https://openairdocs.org/deregistered/N5SF-1988-11-23): Cessna 421B, S/N 421B0529. Triennial form not returned

## Related

- Other Grumman J2F6 aircraft: https://openairdocs.org/model/grumman-j2f6/aircraft.md
- The Wright R-1820 series engine: https://openairdocs.org/engine/wright-r-1820-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.