# N638: 1938 Focke Wulf 44J STIEGLITZ

- Status: Valid registration
- Airframe: [Focke Wulf 44J STIEGLITZ](https://openairdocs.org/model/focke-wulf-44j-stieglitz) (registry code 3540102, 2 seats)
- Engine: [Siemens SH14](https://openairdocs.org/engine/siemens-sh14) (registry code 57001)
- Data sheets: [TCDS Group 3 Siemens Halske](https://openairdocs.org/tcds/Group%203%20Siemens%20Halske) (Siemens Halske) (OpenAirDocs)
- Serial number: 638
- Year built: 1938
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, exhibition
- Airworthiness date: April 28, 1981
- Certificate issued: May 16, 2012
- Expires: May 31, 2028
- Mode S code: A85B73
- Registered owner: [Aero Mobil Inc](https://openairdocs.org/faa-owner/AERO%20MOBIL%20INC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.7376° N, 75.6671° W: Placed by OpenAirDocs at the center of ZIP code 19808, 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=638
- Page: https://openairdocs.org/aircraft/N638

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.

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

### Matched by airframe (Focke Wulf 44J STIEGLITZ)

None in force.

### Matched by engine (Siemens SH14)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX84LA480](https://openairdocs.org/ntsb/LAX84LA480), Sep 14, 1984: Focke-Wulf 44J Stieglitz (N638), Hollister, CA, substantial damage

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19840914049039A](https://openairdocs.org/incident/19840914049039A), Sep 14, 1984: Fckwlf 44JSPIEGLITZ (N638), Hollister, CA, Substantial damage. Pilot applied left brake after landing. Aircraft veered left. Damage to landing gear and wing.

## 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) (1)

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 (Siemens SH14)

- [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

## Earlier aircraft with N638

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N638 before.

- [Cancelled 1960-08-10](https://openairdocs.org/deregistered/N638-1960-08-10): Sikorsky HSS-1, S/N SS581144. Exported to Japan. Owner: [United Aircraft Corp](https://openairdocs.org/faa-owner/UNITED%20AIRCRAFT%20CORP)
- [Cancelled 1938-05-16](https://openairdocs.org/deregistered/N638-1938-05-16): Lincoln STANDARD 5, S/N 103. Owner: [Whittemore Fred](https://openairdocs.org/faa-owner/WHITTEMORE%20FRED), [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis)
- [Cancelled 1928-09-08](https://openairdocs.org/deregistered/N638-1928-09-08): Lincoln Standard BIPLANE, S/N 47350, built 1927. Owner: [Whittemore Fred](https://openairdocs.org/faa-owner/WHITTEMORE%20FRED), [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis)

## Related

- Other Focke Wulf 44J STIEGLITZ aircraft: https://openairdocs.org/model/focke-wulf-44j-stieglitz/aircraft.md
- The Siemens SH14 engine: https://openairdocs.org/engine/siemens-sh14.md

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