# N52KL: 1972 Cessna 421B, registration cancelled 2005-03-08

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 8, 2005
- Status when cancelled: Triennial form not returned
- Airframe: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014)
- 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: 421B-0254
- Year built: 1972
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: September 25, 1972
- Certificate issued: October 30, 1992
- Last registry action: February 15, 2005
- Mode S code: A68781
- Owner when cancelled: [Four Twenty One Inc](https://openairdocs.org/faa-owner/FOUR%20TWENTY%20ONE%20INC)
- Location: [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City)
- Owner type: Corporation
- Owner's area on the map: 35.4676° N, 97.5164° W: Placed by OpenAirDocs: center of Oklahoma City, OK, within about 14 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N52KL
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=52KL
- Page: https://openairdocs.org/deregistered/N52KL-2005-03-08

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 421B: https://openairdocs.org/model/cessna-421b.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 FTW01FA033](https://openairdocs.org/ntsb/FTW01FA033), Dec 10, 2000: Cessna 421B (N52KL), Norman, OK, destroyed, 2 fatal. Probable cause: the pilot's failure to follow the instrument approach procedure and his continued descent below the prescribed minimum descent altitude (MDA). Contributory factors were the pilot's physical…

## 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 20001210032619A](https://openairdocs.org/incident/20001210032619A), Dec 10, 2000: Cessna 421B (N52KL), Norman, OK, Destroyed, 2 fatal. (-23) The a/c was lost from radar at about 4:48 am CST. A search was started by Norman police dept. And ou police dept. At about 5:20 am. The a/c was found at…

---
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.