# N39WL: Bell OH-13E - Status: Valid registration - Airframe: [Bell OH-13E](https://openairdocs.org/model/bell-oh-13e) (registry code 1180809, 3 seats) - Engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033) - Data sheets: [TCDS H7SW](https://openairdocs.org/tcds/H7SW) (Scott's-Bell 47 Inc), [TCDS E-244](https://openairdocs.org/tcds/E-244) (Franklin Sp. z.o.o.) (OpenAirDocs) - Serial number: 514 - Type: Rotorcraft - Engine type: Reciprocating - Airworthiness: Restricted, forest, other - Airworthiness date: June 4, 1976 - Certificate issued: March 14, 2026 - Expires: March 31, 2033 - Mode S code: A4826F - Registered owner: [Minnesota Military And Veterans Museum](https://openairdocs.org/faa-owner/MINNESOTA%20MILITARY%20AND%20VETERANS%20MUSEUM) - Location: [Little Falls, MN](https://openairdocs.org/faa-place/MN/Little%20Falls) - Owner type: Corporation - Owner's area on the map: 46.0100° N, 94.3838° W: Placed by OpenAirDocs at the center of ZIP code 56345, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=39WL - Page: https://openairdocs.org/aircraft/N39WL 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 Franklin 6V4 model are included. ## ADs that may apply (OpenAirDocs): 8 in force ### Matched by airframe (Bell OH-13E) - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 2002-03-16](https://openairdocs.org/ad/2002-03-16): Main Rotor Blade Grip · Continental Copters OH-13H, OH-13E, OH-13E and 2 more. Effective Mar 27, 2002 - [AD 85-15-04](https://openairdocs.org/ad/85-15-04): Tail Rotor Blade Yolk P/N 74-641-057-9 · Scotts-Bell 47 47B, 47B3, 47D and 7 more. Effective Jan 8, 1986 - [AD 80-10-04 R1](https://openairdocs.org/ad/80-10-04-R1): Tail Rotor Blades · Continental Copters OH-13H, OH-13E, OH-13E and 26 more. Effective Feb 28, 1981 - [AD 81-04-03](https://openairdocs.org/ad/81-04-03): Tail Rotor Drive Assembly · Continental Copters OH-13H, OH-13E, OH-13E and 26 more. Effective Feb 2, 1981 - [AD 80-21-09 R1](https://openairdocs.org/ad/80-21-09-R1): Tail Rotor Pitch Link · Continental Copters OH-13H, OH-13E, OH-13E and 26 more. Effective Nov 24, 1980 ### Matched by engine (Franklin 6V4 series) - [AD 69-09-01](https://openairdocs.org/ad/69-09-01): Eisemann Magnetos · Eisemann Magnetos, 2A4-45-B2, 2A4-49-B2 and 158 more - [AD 51-28-02](https://openairdocs.org/ad/51-28-02): Oil Pump Gears · Wytwornia Sprzetu Komunikacyjnego 6V4-178-B3, 6V4-178-B31, 6V4-178-B32 and 3 more ### Historical (superseded or no longer in force) - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 - [AD 2000-18-52](https://openairdocs.org/ad/2000-18-52) (historical): Main Rotor Blade Grip · Continental Copters OH-13H, OH-13E, OH-13E and 2 more. Effective Nov 30, 2000 - [AD 86-06-08 R1](https://openairdocs.org/ad/86-06-08-R1) (historical): Main Rotor Blade Grips · Bell Helicopter Textron 47B, 47B3, 47D and 25 more. Effective Jul 10, 1987 ## 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 FTW94LA221](https://openairdocs.org/ntsb/FTW94LA221), Jul 3, 1994: Bell OH-13E (N39WL), Mountain View, AR, substantial damage. Probable cause: THE FUEL EXHAUSTION AS RESULT OF A STRUCK FUEL DRAIN VALVE. FACTORS WERE THE HIGH DENSITY ALTITUDE, AND THE UNSUITABLE TERRAIN AT THE PILOT'S DISPOSAL FOR THE FORCED LANDING. ## 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 19940703017549A](https://openairdocs.org/incident/19940703017549A), Jul 3, 1994: Bell OH13EISENBG (N39WL), Mountain View, AR, Substantial damage. Lost power en route. Auto rotated into rock pit. Rotor decay caused hard landing, chopped boom. Fuel drain open. ## 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) (19) 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 (Bell OH-13E) - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc - [STC SR09066RC](https://openairdocs.org/stc/SR09066RC): Fabricate the HAC-47-3 Tail Rotor Blade. Scott's-Bell 47 Inc - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SR02487AK](https://openairdocs.org/stc/SR02487AK): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System. ADS-B Technologies, LLC - [STC SR02470AK](https://openairdocs.org/stc/SR02470AK): Installation of the L-3 Communications NGT -1000/2000/2500 ADS-B System. ADS-B Technologies, LLC - [STC SR02471AK](https://openairdocs.org/stc/SR02471AK): Installation of the L-3 Communications NGT -9000/9000R ADS-B System. ADS-B Technologies, LLC - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC - [STC SH2397SW](https://openairdocs.org/stc/SH2397SW): Installation of Ag-King 500B Spray System with 2 tanks (800 pounds total allowable), 32 foot boom on end of skid tubes and engine driven pump. Scott's Bell 47 Inc - [STC SR09322RC](https://openairdocs.org/stc/SR09322RC): Installation of Improved Main Rotor Grips and Matching Adapter Nut. Scott's Bell 47 Inc - [STC SR09348RC](https://openairdocs.org/stc/SR09348RC): Installation of the improved metal blade main rotor grips with integral drag brace clevis, new drag brace, and matching adapter nut for wood blade configurations. Scott's Bell 47 Inc - [STC SH4173NM](https://openairdocs.org/stc/SH4173NM): Installation of Simplex Model 7600 modular electrical system. (US ARMY OH-13E M74A). Simplex Manufacturing Company - [STC SH1166NW](https://openairdocs.org/stc/SH1166NW): Installation of a Simplex Manufacturing Company Spray System. Simplex Manufacturing Company ### Approved for the engine (Franklin 6V4 series) - [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. Lists 6V4-200-C32 - [STC SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive. Alcor LLC. Lists 6V4-178-B3 - [STC SE1311SO](https://openairdocs.org/stc/SE1311SO): Installation of Shivers carburetor temperature gauge with a Richter Aero Equipment B-5 carburetor temperature probe. LegacySTC.com. Lists 6V4-178-B3 - [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 6V4-178-B3 - [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc. Lists 6V4-178-B3 - [STC SE1-201](https://openairdocs.org/stc/SE1-201): Installation of the Richter Aero Equipment Type B-4 or B-5 Temperature Probe. (O-360 SERIES (excl. A1C, C2B, C2D)). MidContinent Instru Co Inc. Lists 6V4-178-B3 ## Related - Other Bell OH-13E aircraft: https://openairdocs.org/model/bell-oh-13e/aircraft.md - The Franklin 6V4 series engine: https://openairdocs.org/engine/franklin-6v4-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.