Has N421MM been in an accident?

Yes. N421MM appears in 1 NTSB accident record, the most recent in 2018.

What kind of aircraft is N421MM?

N421MM is a 1974 Cessna 421B (fixed wing multi-engine), serial number 421B0804.

Has N421MM been in a fatal accident?

An NTSB record for N421MM (ERA18WA159) is classified with a fatal highest injury level.

N421MM — 1974 Cessna 421B

Deregistered

Checked against FAA & NTSB records · as of Jul 25, 2026

N421MM appears in 1 NTSB accident record (most recent 2018, 3 fatalities). Registration and accident data compiled from public FAA and NTSB records as of Jul 25, 2026.

Aircraft record

Serial number: 421B0804
Manufacturer: Cessna
Model: 421B
Year: 1974
Category: Fixed wing multi-engine
Engine: Cont Motor Gtsio-520-c
Registration: Deregistered

View the FAA registry record for N421MM →

Accident & incident history

ERA18WA159Jun 5, 2018Rock SoundFatal · 3 fatal

Registration timeline

Ownership and registration events for this airframe (the 1974 Cessna 421B).

Mar 17, 2021deregistered — Hat Investments Llc

Frequently asked

Has N421MM been in an accident?: Yes. N421MM appears in 1 NTSB accident record, the most recent in 2018.
What kind of aircraft is N421MM?: N421MM is a 1974 Cessna 421B (fixed wing multi-engine), serial number 421B0804.
Has N421MM been in a fatal accident?: An NTSB record for N421MM (ERA18WA159) is classified with a fatal highest injury level.

The full N421MM report

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Complete registration & deregistration timeline, print-ready

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