# N90203: Douglas C-54G

- Status: Valid registration
- Airframe: [Douglas C-54G](https://openairdocs.org/model/douglas-c-54g) (registry code 3021536, 60 seats)
- Data sheets: [TCDS A36CE](https://openairdocs.org/tcds/A36CE) (Central Air Service Inc.) (OpenAirDocs)
- Serial number: 35934
- Type: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, transport
- Airworthiness date: April 10, 1979
- Certificate issued: April 11, 2013
- Expires: April 30, 2029
- Mode S code: AC790E
- Registered owners: [Sheppard Harold Jrdba](https://openairdocs.org/faa-owner/SHEPPARD%20HAROLD%20JRDBA), [Sheppard Trucking](https://openairdocs.org/faa-owner/SHEPPARD%20TRUCKING)
- Location: [Riverton, WY](https://openairdocs.org/faa-place/WY/Riverton)
- Owner type: Individual
- Owner's area on the map: 43.0278° N, 108.2379° W: Placed by OpenAirDocs at the center of ZIP code 82501, within about 15 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=90203
- Page: https://openairdocs.org/aircraft/N90203

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 (Douglas C-54G)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N90203.

## FAA accident and incident reports

None matched to N90203.

## 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) (3)

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 (Douglas C-54G)

- [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation
- [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
- [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc

## Related

- Other Douglas C-54G aircraft: https://openairdocs.org/model/douglas-c-54g/aircraft.md

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