# N421S: 1968 Cessna 421, registration cancelled 2014-10-06

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 6, 2014
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Cessna 421](https://openairdocs.org/model/cessna-421) (registry code 2076010)
- Engine: [Continental GTSIO-520-C](https://openairdocs.org/engine/continental-gtsio-520-c) (registry code 17035)
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE), [TCDS E7CE](https://openairdocs.org/tcds/E7CE) (OpenAirDocs)
- Serial number: 421-0063
- Year built: 1968
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: January 29, 1968
- Certificate issued: February 2, 1987
- Last registry action: February 17, 1999
- Mode S code: A500E6
- Owners when cancelled: [Hamilton W.E.](https://openairdocs.org/faa-owner/HAMILTON%20W.E.), [Schlittenhart R.E.](https://openairdocs.org/faa-owner/SCHLITTENHART%20R.E.)
- Location: [Casa Grande, AZ](https://openairdocs.org/faa-place/AZ/Casa%20Grande)
- Owner type: Partnership
- Owner's area on the map: 32.8795° N, 111.7574° W: Placed by OpenAirDocs: center of Casa Grande, AZ, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N421S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=421S
- Page: https://openairdocs.org/deregistered/N421S-2014-10-06

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 421: https://openairdocs.org/model/cessna-421.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 LAX89LA217](https://openairdocs.org/ntsb/LAX89LA217), Jun 17, 1989: Cessna 421 (N421S), Picacho, AZ, destroyed. Probable cause: FAILURE OF THE NUMBER THREE EXHAUST VALVE ON THE LEFT ENGINE. A MAJOR FACTOR WAS THE HIGH DENSITY ALTITUDE WHERE THE AIRPLANE WOULD NOT OPERATE ON SINGLE ENGINE.

## 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 19890617016179A](https://openairdocs.org/incident/19890617016179A), Jun 17, 1989: Cessna 421 (N421S), Pichaco, AZ, Destroyed. Lost left engine on initial climbout, 114 temp and density altitude precluded further climb. Exhaust valve failure.

## Other aircraft with N421S

- [Registered now](https://openairdocs.org/aircraft/N421S): Selby Dean RV-14A, S/N 140715, built 2022

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