# N436SD: 1970 Bell OH-58C

- Status: Valid registration
- Airframe: [Bell OH-58C](https://openairdocs.org/model/bell-oh-58c) (registry code 1181580, 4 seats)
- Engine: [Allison T63 series](https://openairdocs.org/engine/allison-t63-series) (registry code 03031)
- Data sheets: [TCDS E2SO](https://openairdocs.org/tcds/E2SO) (Continental Aerospace Technologies, Inc.) (OpenAirDocs)
- Serial number: 70-15436
- Year built: 1970
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Experimental, exhibition
- Airworthiness date: August 18, 2005
- Certificate issued: July 22, 2013
- Expires: July 31, 2029
- Mode S code: A53AFC
- Registered owner: [Malolo LLC](https://openairdocs.org/faa-owner/MALOLO%20LLC)
- Location: [San Luis Obispo, CA](https://openairdocs.org/faa-place/CA/San%20Luis%20Obispo)
- Owner type: LLC
- Owner's area on the map: 35.2359° N, 120.6160° W: Placed by OpenAirDocs at the center of ZIP code 93401, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=436SD
- Page: https://openairdocs.org/aircraft/N436SD

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 Allison T63 model are included.

## ADs that may apply (OpenAirDocs): 1 in force

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

None in force.

### Matched by engine (Allison T63 series)

- [AD 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012

## Information bulletins (advisory) (3 in force)

- [SAIB NE-16-13](https://openairdocs.org/saib/NE-16-13): Powerplant - Prohibited use of sealant. Issued Mar 8, 2016
- [SAIB NE-13-04](https://openairdocs.org/saib/NE-13-04): Continental Motors, Inc. (CMI) Connecting Rod Piston Pin Bushing Inspection. Issued Oct 31, 2012
- [SAIB NE-02-31](https://openairdocs.org/saib/NE-02-31): . Issued Jun 10, 2002

## 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 LAX00LA076](https://openairdocs.org/ntsb/LAX00LA076), Jan 19, 2000: Bell OH-58C (N436SD), Brawley, CA, substantial damage. Probable cause: The fuel system contamination that resulted in a loss of engine power during aerial application and a subsequent collision with the ground.

## 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 20000118000439A](https://openairdocs.org/incident/20000118000439A), Jan 18, 2000: Arofal OH58C (N436SD), Brawley, CA, Substantial damage. (.19) On January 18, 2000, about 1630 hours pacific standard time, a bell OH-58C, N436SD, collided with flat agricultural terrain while spraying a field in…

## 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) (4)

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 T63 series)

- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc. Lists T6-320-A
- [STC SE1780NM](https://openairdocs.org/stc/SE1780NM): Installation of Precise Flight standby vacuum system (SVS III). Precise Flight Inc. Lists T6-320-A
- [STC SE09513SC](https://openairdocs.org/stc/SE09513SC): Installation and usage of Exxon 20W50 Multigrade aircraft engine oil conforming to Exxon Oil Formulation WS-3013. Exxon Company USA. Lists T6-320-A
- [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co. Lists T6-320-A

## Related

- Other Bell OH-58C aircraft: https://openairdocs.org/model/bell-oh-58c/aircraft.md
- The Allison T63 series engine: https://openairdocs.org/engine/allison-t63-series.md

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