# N421P: 1973 Cessna 421B, registration cancelled 2009-09-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 14, 2009
- Status when cancelled: Second triennial mailing, no response
- Airframe: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014)
- Engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032)
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE), [TCDS E5CE](https://openairdocs.org/tcds/E5CE) (OpenAirDocs)
- Serial number: 421B0389
- Year built: 1973
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: March 30, 1973
- Certificate issued: August 29, 2002
- Last registry action: December 2, 2005
- Mode S code: A5009B
- Owner when cancelled: [Mountain Lifeflight Lp](https://openairdocs.org/faa-owner/MOUNTAIN%20LIFEFLIGHT%20LP)
- Location: [Susanville, CA](https://openairdocs.org/faa-place/CA/Susanville)
- Owner type: Partnership
- Owner's area on the map: 40.5491° N, 120.6340° W: Placed by OpenAirDocs at the center of ZIP code 96130, within about 13 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N421P
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=421P
- Page: https://openairdocs.org/deregistered/N421P-2009-09-14

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 421B: https://openairdocs.org/model/cessna-421b.md

## FAA accident and incident reports (3)

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.

- [Incident 20050816017119I](https://openairdocs.org/incident/20050816017119I), Aug 16, 2005: Cessna 421B (N421P), Reno, NV, No damage. (-23) The left engine ran rough and was shut down shortly after takeoff. The pilot safely returned to rno where it was discovered that a 2 inch hole had been…
- [Incident 19950603024679I](https://openairdocs.org/incident/19950603024679I), Jun 3, 1995: Cessna 421B (N421P), Susanville, CA, Minor damage. Veered off runway on landing roll into soft dirt. Prop hit a sign. Reported brake malfunction.
- [Incident 19910318007509I](https://openairdocs.org/incident/19910318007509I), Mar 18, 1991: Cessna 421B (N421P), Visalia, CA, Minor damage. Power loss and smoke from left engine. Shut down and landed. Exhaust gasses leaking from hole in exhaust manifold.

## Other aircraft with N421P

- [Registered now](https://openairdocs.org/aircraft/N421P): Cessna 421C, S/N 421C1092

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