Skip to content
KnownTail
Aircraft record

N52KL1972 Cessna 421B

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Mar 8, 2005.

Safety record in brief:1 NTSB accident (destroyed damage, Dec 2000)7 ADs may apply

Registration
Deregistered
Last based in
Oklahoma City, OK
owner city / state
Engine
GTSIO-520-C · 340 hp
Cont Motor
Owners
1
since 1992
NTSB events
1
destroyed, 2000
ADs may apply
7
confirm with A&P
Service reports
0
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
Four Twenty One INC
Owner type
Corporation
City, state
Oklahoma City, OK
Certificate issued
Oct 30, 1992
Canceled
Mar 8, 2005
Airworthiness
Standard · Normal
Airworthiness date
Sep 25, 1972

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer
Cessna
Model
421B
Year
1972
Serial number
421B-0254
Aircraft type
Fixed wing multi engine
Category
Land
Certification
Type Certificated
Seats
8
Engines
2
Max takeoff weight
Up to 12,499 lb
Mode S code
A68781

Engine

Make and model
Cont Motor Gtsio-520-C
Type
Reciprocating
Power
340 hp

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 1992 – 2005Four Twenty One INCOklahoma City, OK

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 20, 2026 · SDRs · Oct 16, 2026

NTSB events (1)

Accident · destroyed

Dec 10, 2000 · Norman, OK

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 impairment from drugs, the low ceiling, fog, and dark night light conditions.

Damage
Destroyed
Injuries
Fatal
Report
FTW01FA033

From NTSB records; matched by serial number.Read NTSB report (search CAROL for FTW01FA033)

Accident history for this model

ADs published since 1998 that may apply (7)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

ADSubjectEffectiveApplies to
2023-05-16Reciprocating Engine Power SectionMar 15, 2023Engine (GTSIO-520-C)
2020-16-11Reciprocating Cylinder SectionSep 21, 2020Engine (GTSIO-520-C)Only with: Engines originally manufactured, rebuilt, or modified with a cross-flow cylinder assembly replacement on or after November 1, 2014, with cross-flow cylinder assembly P/N 658538, 658540, 658542, 658591, 658595, 658613, 658624, 658539, 658541, 658590, 658594, 658603, 658623, or 658630 installed.
2016-17-08Elevator Tab Control SystemSep 12, 2016Airframe (421B)
2007-05-15Teledyne Continental Motors GTSIO-520 Series Reciprocating EnginesApr 16, 2007Engine (GTSIO-520-C)
2005-20-25The Cessna Aircraft Company Models 401, 401A, 401B, 402, 402A, 402B, 402C, 404, 411…Nov 9, 2005Airframe (421B)Certain serial numbers: 401 655; 401 401-0001–401-0322; 401A 655; 401A 401A0001–401A0132; 401B 401B0001–401B0221; 402 402-0001–402-0322; …. Only with: Equipped with an avionics bus circuit breaker switch P/N CM3589-50, 593-250-101, 593-250-102, W31-X2M5A-50, or W31-X1000-50.
Show all 7 ADs
ADSubjectEffectiveApplies to
2000-01-16Cessna Aircraft Company 300 and 400 Series AirplanesFeb 15, 2000Airframe (421B)
98-04-28Cessna Aircraft Company Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414…Mar 13, 1998Airframe (421B)

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (0)

No Service Difficulty Reports found for this airframe since 1995.

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 20, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 20, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

Request owner name removalReport an error in this record