# N729DM: 1981 Cessna 421C, registration cancelled 2009-01-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 14, 2009
- Status when cancelled: Second triennial mailing, no response
- Airframe: [Cessna 421C](https://openairdocs.org/model/cessna-421c) (registry code 2076016)
- Engine: [Continental GTSIO-520 series](https://openairdocs.org/engine/continental-gtsio-520-series) (registry code 17039)
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE), [TCDS E7CE](https://openairdocs.org/tcds/E7CE) (OpenAirDocs)
- Serial number: 421C1101
- Year built: 1981
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, normal
- Airworthiness date: September 2, 1981
- Certificate issued: January 20, 2004
- Last registry action: April 30, 2007
- Mode S code: A9C552
- Owner when cancelled: [N729dm LLC](https://openairdocs.org/faa-owner/N729DM%20LLC)
- Location: [Ingram, TX](https://openairdocs.org/faa-place/TX/Ingram)
- Owner type: Corporation
- Owner's area on the map: 30.0778° N, 99.2854° W: Placed by OpenAirDocs at the center of ZIP code 78025, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N729DM
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=729DM
- Page: https://openairdocs.org/deregistered/N729DM-2009-01-14

From the FAA registry file of October 29, 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 Cessna 421C: https://openairdocs.org/model/cessna-421c.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 FTW04FA243](https://openairdocs.org/ntsb/FTW04FA243), Sep 23, 2004: Cessna 421C (N729DM), Bee Caves, TX, destroyed, 2 fatal. Probable cause: The pilot's improper positioning of the fuel selector valves, which resulted in a loss of power to the left engine due to fuel exhaustion. After the power loss, the pilot failed to follow checklist…

## 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 20040923029829A](https://openairdocs.org/incident/20040923029829A), Sep 23, 2004: Cessna 421C (N729DM), Bee Cave, TX, Destroyed, 2 fatal. (-23) On September 23, 2004, aircraft N729DM, a Cessna 421C, S/N421C1101, was involved in an accident west of austin in Bee Cave, TX. The aircraft was inbound…

## Other aircraft with N729DM

- [Registered now](https://openairdocs.org/aircraft/N729DM): Zipline International P2 ZIP, S/N 18735P2283

---
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.