# N14MH: 1966 Bell TH-1F

- Status: Valid registration
- Airframe: [Bell TH-1F](https://openairdocs.org/model/bell-th-1f) (registry code 1180815, 6 seats)
- Engine: [GE CT58 series](https://openairdocs.org/engine/ge-ct58-series) (registry code 30011)
- Serial number: 66-1238
- Year built: 1966
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: July 9, 1993
- Certificate issued: January 8, 2025
- Expires: January 31, 2032
- Mode S code: A0A172
- Registered owner: [Sierra Aeronautics LLC](https://openairdocs.org/faa-owner/SIERRA%20AERONAUTICS%20LLC)
- Location: [Franklin, KY](https://openairdocs.org/faa-place/KY/Franklin)
- Owner type: LLC
- Owner's area on the map: 36.7254° N, 86.5646° W: Placed by OpenAirDocs at the center of ZIP code 42134, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=14MH
- Page: https://openairdocs.org/aircraft/N14MH

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 GE CT58 model are included.

## ADs that may apply (OpenAirDocs): 8 in force

### Matched by airframe (Bell TH-1F)

- [AD 2024-19-17](https://openairdocs.org/ad/2024-19-17): Rotorcraft flight control · Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N… (STC SR03408CH). Effective Oct 11, 2024
- [AD 2022-20-14](https://openairdocs.org/ad/2022-20-14): Main Rotor Gearbox · Bell Textron 204B, 205A, 205A-1 and 20 more. Effective Dec 27, 2022
- [AD 2022-22-12](https://openairdocs.org/ad/2022-22-12): Nose/Tail Landing Gear Structure/Axle · Replacement crosstubes P/N D212-664 (Dart Aerospace STC SR01298NY). Effective Nov 22, 2022
- [AD 2022-21-11](https://openairdocs.org/ad/2022-21-11): Main rotor blades · Bell Textron 204B, 205A, 205A-1 and 11 more. Effective Nov 16, 2022
- [AD 2022-05-10](https://openairdocs.org/ad/2022-05-10): Cabin Equipment/Furnishings · Airbus Helicopters AS332L, AS332L1, AS332L2 and 57 more. Effective Apr 20, 2022
- [AD 2022-06-05](https://openairdocs.org/ad/2022-06-05): Main Rotor System · WSH HH-1K, TH-1F, TH-1L and 11 more. Effective Mar 16, 2022
- [AD 2021-15-14](https://openairdocs.org/ad/2021-15-14): Rotorcraft Tail Boom · California Department of Forestry UH-1H, UH-1F, TH-1L and 39 more. Effective Aug 30, 2021
- [AD 97-01-06](https://openairdocs.org/ad/97-01-06): Tail Rotor Slider · Arrow Falcon Exporters UH-1H, UH-1F, TH-1L and 32 more. Effective Feb 13, 1997

### Matched by engine (GE CT58 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N14MH.

## FAA accident and incident reports

None matched to N14MH.

## 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)

None matched to this aircraft's models.

## Earlier aircraft with N14MH

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N14MH before.

- [Cancelled 1989-03-15](https://openairdocs.org/deregistered/N14MH-1989-03-15): Aero Commander 680FL P, S/N 148911. Triennial form not returned

## Related

- Other Bell TH-1F aircraft: https://openairdocs.org/model/bell-th-1f/aircraft.md
- The GE CT58 series engine: https://openairdocs.org/engine/ge-ct58-series.md

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