# N5800K: Bell OH-58A - Status: Valid registration - Airframe: [Bell OH-58A](https://openairdocs.org/model/bell-oh-58a) (registry code 1181579, 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: 71-20843 - Type: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Restricted, agriculture and pest control - Airworthiness date: May 15, 1998 - Certificate issued: March 7, 2025 - Expires: March 31, 2032 - Mode S code: A7784A - Registered owner: [Blair Helicopter Service Inc](https://openairdocs.org/faa-owner/BLAIR%20HELICOPTER%20SERVICE%20INC) - Location: [Lemoore, CA](https://openairdocs.org/faa-place/CA/Lemoore) - Owner type: Corporation - Owner's area on the map: 36.2861° N, 119.8341° W: Placed by OpenAirDocs at the center of ZIP code 93245, 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=5800K - Page: https://openairdocs.org/aircraft/N5800K 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-58A) 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 LAX99LA319](https://openairdocs.org/ntsb/LAX99LA319), Sep 18, 1999: Bell OH58A (N5800K), Salinas, CA, substantial damage. Probable cause: The pilot's failure to maintain an adequate clearance from all ground obstacles during a low altitude aerial application flight. ## 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 19990918043269A](https://openairdocs.org/incident/19990918043269A), Sep 18, 1999: Bell OH58A (N5800K), Salinas, CA, No damage. (-23) During an agricultural application the pilot was making a westerly pass, as he came to the end of the field he felt the helicopter yaw to the right, he… ## 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-58A aircraft: https://openairdocs.org/model/bell-oh-58a/aircraft.md - The Allison T63 series engine: https://openairdocs.org/engine/allison-t63-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.