# N9729H: 1942 Beech C18S, registration cancelled 2014-11-26

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 26, 2014
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Beech C18S](https://openairdocs.org/model/beech-c18s) (registry code 1150902)
- Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008)
- Data sheets: [TCDS A-757](https://openairdocs.org/tcds/A-757) (OpenAirDocs)
- Serial number: 8205
- Year built: 1942
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Experimental, exhibition
- Airworthiness date: June 22, 1990
- Certificate issued: January 18, 1990
- Last registry action: April 29, 2002
- Mode S code: AD8EAE
- Owner when cancelled: [Younkin Robert A](https://openairdocs.org/faa-owner/YOUNKIN%20ROBERT%20A)
- Location: [Lowell, AR](https://openairdocs.org/faa-place/AR/Lowell)
- Owner type: Individual
- Owner's area on the map: 36.2465° N, 94.1026° W: Placed by OpenAirDocs at the center of ZIP code 72745, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9729H
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9729H
- Page: https://openairdocs.org/deregistered/N9729H-2014-11-26

From the FAA registry file of October 31, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Beech C18S: https://openairdocs.org/model/beech-c18s.md

## 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 FTW99FA148](https://openairdocs.org/ntsb/FTW99FA148), May 24, 1999: Beech C18S (N9729H), Waldron, AR, destroyed, 1 fatal. Probable cause: the separation of a propeller blade in cruise flight as a result of fatigue cracking emanating from surface corrosion pitting.

## FAA accident and incident reports (2)

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 19990523045659A](https://openairdocs.org/incident/19990523045659A), May 23, 1999: Beech C18S (N9729H), Waldron, AR, No damage. (-23)The pilot reported to ATC that he lost an engine enroute to springdale, Arkansas, at 5,500 feet. He requested vectors to the nearest airport; Waldron,…
- [Incident 19981107041509I](https://openairdocs.org/incident/19981107041509I), Nov 7, 1998: Beech C18S (N9729H), Biloxi, MS, Minor damage. (-23) Aircraft returning to ramp after doing an airshow taxied into a car striking the right rear fender with the left propeller.

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