- Registered owner
- Four Twenty One LLC
- Location
- Kalispell, MT
- Owner type
- LLC
- Serial number
- 421C0340
- Year built
- 1977
- Type
- Fixed wing multi engine
- Engine
- Reciprocating
- Airworthiness
- Standard, normal
- Airworthiness date
- August 15, 1977
- Certificate issued
- May 31, 2023
- Expires
- May 31, 2030
- Mode S code
- AAB67A
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 33
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1972 | 2 |
|---|---|
| 1976 | 2 |
| 1977 | 1 |
| 1978 | 2 |
| 1980 | 3 |
| 1984 | 2 |
| 1986 | 1 |
| 1989 | 1 |
| 1990 | 1 |
| 1992 | 1 |
| 1994 | 1 |
| 1995 | 1 |
| 1996 | 1 |
| 1997 | 1 |
| 1998 | 3 |
| 2000 | 1 |
| 2001 | 1 |
| 2004 | 1 |
| 2005 | 3 |
| 2008 | 1 |
| 2016 | 2 |
| 2018 | 2 |
| 2023 | 2 |
See all 36 ADs
Information bulletins that may apply · 10
Advisory, not mandatory.
Airframe · Cessna 421C
SAIB CE-13-27R1Flight Controls Frayed Flap Extend CablesSAIB AIR-21-20TE FLAP CONTROL SYSTEM, Flight Controls –Flap Cable TensionSAIB CE-14-11R1Landing Gear; Nose Landing Gear TrunnionsSAIB CE-14-19Landing Gear; Main Landing Gear (MLG) Torque LinkSAIB CE-13-22Electrical Power System Circuit Breaker SwitchSAIB CE-11-29R1Flight Control SystemSAIB CE-10-01Fuel: Fuel Tank Selector Valve SystemsSAIB CE-03-17SAIB ACE-99-06SAIB ACE-99-05Historical bulletins · 2
NTSB investigations
No NTSB investigations matched to N79JFMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Cessna 421C aircraft
FAA incident reports · 4
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Incident 20130930020039ILanding: Touchdown · Waterford, MIAircraft landed at ptk with normal (3 green ) landing gear indication and upon touchdown the nose landing gear collapsed causing damage to nose radome fairing, left and right nose landing gear doors and left and right propellers.Incident 20021218035489IClimb · Minneapolis, MN(-23) The oil temperature prob, which is attached to the oil cooler, blew out. The subsequent oil leak onto the hot exhaust manifolds caused the oil to catch fire, burning a hole in the top side of the engine cowling vent louvers. The pilot declared an…Incident 19821202067339INormal Cruise · Magnolia, ARDrop in manifold pressure and scorched spot on cowl. #3 cylinder exhaust stack broken. Pn 991029523.Incident 19810213013509INormal Cruise · Little Rock, AREnroute noted manifold pressure drop. After landing found left engine cowling burned. Exhaust stack had broken.
Service difficulty reports
No reports matched to N79JFGeneral aviation reporting is voluntary. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Reports on Cessna 421C aircraft
STCs that may be installed · 258
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Cessna 421C
STC SA02571SEInstallation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).STC SA01800SEFabrication and installation of new or replacement of existing instrument panel lights dimmer control.STC SA01861SEFabrication and installation of Landing Light Controller