N104TP1979 Cessna 421C
This N-number isn't registered right now. Below is its last known registration, canceled Mar 4, 2023.
Safety record in brief:No NTSB accidents or incidents since 19825 ADs may apply1 service difficulty report
- Registration
- Deregistered
Registration
FAA Aircraft Registry · Oct 16, 2026- Last registered owner
- Heathrow Transport Partners LLC
- Owner type
- LLC
- City, state
- Lake Mary, FL
- Certificate issued
- Nov 8, 2019
- Canceled
- Mar 4, 2023
- Airworthiness
- Standard · Normal
- Airworthiness date
- Feb 26, 1979
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
- 421C
- Year
- 1979
- Serial number
- 421C0635
- 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
- A01547
Engine
- Make and model
- Cont Motor Tsio-520 Ser
- Type
- Reciprocating
- Power
- 300 hp
Total time and engine hours aren't public. They appear here once the owner adds logbooks.
Ownership history
Ownership history from FAA records- 2019 – 2023Heathrow Transport Partners LLCLake Mary, FL
Individual owners are shown by city and state only.
Safety record
NTSB · Oct 15, 2026 · FAA ADs · Oct 16, 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 (5)
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 |
|---|---|---|---|
| 2016-17-08 | Elevator Tab Control System | Sep 12, 2016 | Airframe (421C) |
| 2009-16-03 | Teledyne Continental Motors (TCM) IO-520, TSIO-520, and IO-550 Series Reciprocating… | Sep 9, 2009 | Engine (TSIO-520 SER)Only with: SAP investment cast cylinder assemblies P/Ns SA52000-A1, SA52000-A20P, SA52000-A21P, SA52000-A22P, SA52000-A23P, SA55000-A1, or SA55000-A20P installed. |
| 2005-20-25 | The Cessna Aircraft Company Models 401, 401A, 401B, 402, 402A, 402B, 402C, 404, 411… | Nov 9, 2005 | Airframe (421C)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. |
| 2000-01-16 | Cessna Aircraft Company 300 and 400 Series Airplanes | Feb 15, 2000 | Airframe (421C) |
| 98-04-28 | Cessna Aircraft Company Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414… | Mar 13, 1998 | Airframe (421C) |
AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.
Service Difficulty Reports (1)
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.
- Wings · skin · debondedMay 26, 1998
DURING CESSNA PROGRESSIVE CARE INSPECTION, NR 3, NR 4, FOUND STIFFENERS IN BOTH AILERONS. DEBONDED AND AILERON SKIN LOOSE. NO REPAIR POSSIBLE BECAUSE OF NO ACCESS DUE TO SKIN BEING BONDED TO RIBS. EXHANGE OVERHAULED AILERONS WERE INSTALLED DUE TO THE FACT THERE WERE NO APPROVED REPAIRS TO THESE…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Sources
- FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 16, 2026
- NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
- FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 16, 2026
- FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026