FAA Aircraft Registry · Live Lookup · As of Apr 28, 2026
N421KM — Cessna 421C
Rendered live from the FAA Aircraft Registry (refreshed weekly). This tail has no NTSB events or airworthiness directives indexed against it — type-level history is on the type page below.
Registration
Registrant
WEATHERPROOF MONTANA LLC
Registrant Type
LLC
Location
MISSOULA, MT
Status
Registration Valid
Certificate Issued
Apr 17, 2024
Airworthiness Date
May 12, 1992
Registration Expires
Apr 30, 2031
Last Action
Apr 17, 2024
Aircraft
Serial Number
421C-0006
Year Manufactured
1976
Aircraft Type
Fixed Wing Multi Engine
Certification
Standard (+1 flag)
Engine
CONT MOTOR GTSIO-520 SER
Engines / Seats
2 / 8
Weight Class
CLASS 1
Mode S (Hex)
A50043
Type History
Cessna 421C type page → — 501 registered · 74 NTSB records · 49 airworthiness directives
Live position via ICAO24 A50043
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