# N441EA: 1972 Bell OH-58A

- Status: Valid registration
- Airframe: [Bell OH-58A](https://openairdocs.org/model/bell-oh-58a) (registry code 1181579, 4 seats)
- Engine: [Allison 250-C20C](https://openairdocs.org/engine/allison-250-c20c) (registry code 03082)
- Data sheets: [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (Rolls-Royce Corporation) (OpenAirDocs)
- Serial number: 71-20860
- Year built: 1972
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Experimental, unmanned, research and development
- Airworthiness date: May 30, 2013
- Certificate issued: September 3, 2023
- Expires: September 30, 2030
- Mode S code: A54EB9
- Registered owner: [Edgefield Aviation LLC](https://openairdocs.org/faa-owner/EDGEFIELD%20AVIATION%20LLC)
- Location: [Sandy, OR](https://openairdocs.org/faa-place/OR/Sandy)
- Owner type: LLC
- Owner's area on the map: 45.3611° N, 122.1579° W: Placed by OpenAirDocs at the center of ZIP code 97055, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=441EA
- Page: https://openairdocs.org/aircraft/N441EA

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): 10 in force

### Matched by airframe (Bell OH-58A)

None in force.

### Matched by engine (Allison 250-C20C)

- [AD 2022-10-06](https://openairdocs.org/ad/2022-10-06): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20C (T63-A-720) and 9 more. Effective Jun 28, 2022
- [AD 2018-13-01](https://openairdocs.org/ad/2018-13-01): Turbine Governor · Rolls-Royce 250-C10 (T63-A-5), 250-C18, 250-C18A and 24 more. Effective Aug 16, 2018
- [AD 2006-16-04](https://openairdocs.org/ad/2006-16-04): Inspection of the fuel nozzle screen · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Sep 7, 2006
- [AD 98-24-28](https://openairdocs.org/ad/98-24-28): Main Fuel Control Bellows · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 36 more. Effective Jan 7, 1999
- [AD 88-17-01](https://openairdocs.org/ad/88-17-01): Fuel Controls · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 26 more. Effective Mar 1, 1989
- [AD 83-03-02 R1](https://openairdocs.org/ad/83-03-02-R1): Slotted Third Stage Turbine Wheels · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 5 more. Effective Feb 28, 1984
- [AD 82-24-05](https://openairdocs.org/ad/82-24-05): Control Assembly and Power Turbine Governor Assembly · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Nov 26, 1982
- [AD 79-21-01 R1](https://openairdocs.org/ad/79-21-01-R1): Third Stage Turbine Wheel Blade · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 3 more. Effective Jun 3, 1981
- [AD 77-15-12](https://openairdocs.org/ad/77-15-12): Power Turbine Coupling Nut · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 23 more. Effective Sep 23, 1977
- [AD 77-09-08](https://openairdocs.org/ad/77-09-08): Bleed Valve Diaphragm · Rolls-Royce 250-B17, 250-B17B, 250-C20 and 2 more. Effective Jul 18, 1977

### Historical (superseded or no longer in force)

- [AD 2004-24-09](https://openairdocs.org/ad/2004-24-09) (historical): Fuel nozzle · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 40 more. Effective Jan 5, 2005

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N441EA.

## FAA accident and incident reports

None matched to N441EA.

## Reports on N441EA not matched to an aircraft (1)

They name N441EA, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19910904049639I](https://openairdocs.org/incident/19910904049639I), Sep 4, 1991: Cessna 441 (N441EA), Dallas, TX. Gyro compass failed en route followed by odor of burning wire. Diverted to st louis. Suspect surveillance equipment

## 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 engine (Allison 250-C20C)

- [STC SE5511NM](https://openairdocs.org/stc/SE5511NM): Installation of compressor discharge pressue (PC) valve. Bell Helicopter Textron Inc
- [STC SE00027EN](https://openairdocs.org/stc/SE00027EN): Installation of Pratt & Whitney Engine Services Inc. Intellistart plus electronic control unit (ECU), P/N DPU-K-010 on the specified 250 engine models. Pratt & Whitney Engine Services Inc
- [STC ST00037AT](https://openairdocs.org/stc/ST00037AT): Unison igniter plugs, P/N 9044400-1. Unison Industries

## Related

- Other Bell OH-58A aircraft: https://openairdocs.org/model/bell-oh-58a/aircraft.md
- The Allison 250-C20C engine: https://openairdocs.org/engine/allison-250-c20c.md

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