N21WT1973 Cessna 421B
This N-number isn't registered right now. Below is its last known registration, canceled Jul 11, 2023.
Safety record in brief:No NTSB accidents or incidents since 19827 ADs may apply2 service difficulty reports
- Registration
- Deregistered
Registration
FAA Aircraft Registry · Oct 19, 2026- Last registered owner
- Individual owner
- City, state
- Escondido, CA
- Certificate issued
- Jan 23, 2018
- Canceled
- Jul 11, 2023
- Airworthiness
- Standard · Normal
- Airworthiness date
- Nov 13, 1973
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 dataAirframe
- Manufacturer
- Cessna
- Model
- 421B
- Year
- 1973
- Serial number
- 421B0486
- 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
- A1B92F
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- 2018 – 2023Individual ownerEscondido, CA
- 1984 – 1995Individual ownerAlvarado, TX · different airframe: Piper Pa-23-250 S/N 27139
Individual owners are shown by city and state only.
Safety record
NTSB · Oct 15, 2026 · FAA ADs · Oct 18, 2026 · SDRs · Oct 16, 2026NTSB events (0)
No NTSB accidents or incidents found for this airframe since 1982.
Accident history for this modelADs 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.
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 2023-05-16 | Reciprocating Engine Power Section | Mar 15, 2023 | Engine (GTSIO-520-C) |
| 2020-16-11 | Reciprocating Cylinder Section | Sep 21, 2020 | Engine (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. |
| 2016-17-08 | Elevator Tab Control System | Sep 12, 2016 | Airframe (421B) |
| 2007-05-15 | Teledyne Continental Motors GTSIO-520 Series Reciprocating Engines | Apr 16, 2007 | Engine (GTSIO-520-C) |
| 2005-20-25 | The Cessna Aircraft Company Models 401, 401A, 401B, 402, 402A, 402B, 402C, 404, 411… | Nov 9, 2005 | Airframe (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 ADsShow fewer ADs
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 2000-01-16 | Cessna Aircraft Company 300 and 400 Series Airplanes | Feb 15, 2000 | Airframe (421B) |
| 98-04-28 | Cessna Aircraft Company Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414… | Mar 13, 1998 | Airframe (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 (2)
Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.
- Reciprocating engine · screw · shearedDec 25, 2014
RPM AND MANIFOLD PRESSURE STARTED FLUCTUATING FOR THE RT ENGINE. WHITE SMOKE FROM TURBO CHARGER VENTS WAS NOTED AS WELL AS OIL STREAKS NOTED. OIL PRESSURE DROPPED TO BOTTOM OF GREEN ARC ON THE OIL PRESSURE GAGE. EMERGENCY PROCEDURE CHECKLIST CALLED FOR ENGINE TO BE SHUTDOWN WITH THROTTLE CLOSED…
From FAA Service Difficulty Reports; matched by N-number and serial number. - Autoflight · autopilot sys · shortedSep 3, 2009
ON APPROACH, A FEW WISPS OF SMOKE WAS SEEN IN THE COCKPIT EMANATING FROM THE PILOT'S SIDE OF THE INSTRUMENT PANEL. AT THE SAME TIME, AN ELECTRICAL SMOLDERING ODOR WAS DETECTED. THE WISPS OF SMOKE CLEARED WITHIN 20 SECONDS AND NO FURTHER SMOKE WAS VISUALIZED. THE AIRCRAFT WAS LANDED WITHOUT INCIDENT.
From FAA Service Difficulty Reports; matched by N-number and serial number.
Sources
- FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 19, 2026
- NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
- FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 18, 2026
- FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026