# N429C: 1967 Sikorsky CH-54A

- Status: Valid registration
- Airframe: [Sikorsky CH-54A](https://openairdocs.org/model/sikorsky-ch-54a) (registry code 8142501, 20 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 67-18429
- Year built: 1967
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Restricted, agriculture and pest control, other
- Airworthiness date: December 21, 1995
- Certificate issued: June 23, 2009
- Expires: July 31, 2027
- Mode S code: A51D40
- Registered owner: [Siller Helicopters LLC](https://openairdocs.org/faa-owner/SILLER%20HELICOPTERS%20LLC)
- Location: [Chamblee, GA](https://openairdocs.org/faa-place/GA/Chamblee)
- Owner type: Corporation
- Owner's area on the map: 33.8885° N, 84.2895° W: Placed by OpenAirDocs at the center of ZIP code 30341, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=429C
- Page: https://openairdocs.org/aircraft/N429C

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): 1 in force

### Matched by airframe (Sikorsky CH-54A)

- [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

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

### Historical (superseded or no longer in force)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 99-07-16](https://openairdocs.org/ad/99-07-16) (historical): Second Stage Lower Planetary Plate · Columbia Helicopters CH-54A and CH-54A. Effective May 6, 1999

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N429C.

## FAA accident and incident reports

None matched to N429C.

## 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 N429C

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N429C before.

- [Cancelled 1989-03-20](https://openairdocs.org/deregistered/N429C-1989-03-20): Stinson 108-2, S/N 1083429. Triennial form not returned

## Related

- Other Sikorsky CH-54A aircraft: https://openairdocs.org/model/sikorsky-ch-54a/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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