# NTSB investigations: Cessna 421B

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 2 of 4 · 162 cases

## Cases, newest first

- [NTSB LAX00LA004](https://openairdocs.org/ntsb/LAX00LA004.md): Cessna 421B · Montague, CA · Accident · No injuries · Limited investigation · Final report · Oct 5, 1999 · N69GP · Substantial damage
  > The collapse of the left main landing gear during the landing rollout for undetermined reasons, which resulted in the pilot's loss of directional control.
- [NTSB LAX99LA240](https://openairdocs.org/ntsb/LAX99LA240.md): Cessna 421B · Polacca, AZ · Accident · Minor injuries · Limited investigation · Final report · Jul 2, 1999 · N5943M · Substantial damage
  > The pilot's inadequate preflight inspection, which failed to determine the fuel supply in each fuel tank, and his mismanagement of the fuel supply, which resulted in fuel starvation.
- [NTSB CHI99FA163](https://openairdocs.org/ntsb/CHI99FA163.md): Cessna 421B · Jefferson City, MO · Accident · 4 fatal · Field investigation · Final report · May 27, 1999 · N34TM · Destroyed
  > the pilot failed to maintain control of the airplane. A factor was the partial loss of power due to the exhaust valve fatigue failure.
- [NTSB SEA99FA041](https://openairdocs.org/ntsb/SEA99FA041.md): Cessna 421B · North Bend, OR · Accident · 2 fatal · Field investigation · Final report · Mar 9, 1999 · N41096 · Substantial damage
  > A delayed aborted takeoff for an undetermined reason.
- [NTSB IAD99LA027](https://openairdocs.org/ntsb/IAD99LA027.md): Cessna 421B · Youngstown, OH · Accident · No injuries · Limited investigation · Final report · Jan 15, 1999 · N882BB · Substantial damage
  > The pilot's failure to maintain aircraft control. A factor was the icy runway.
- [NTSB CHI98LA302](https://openairdocs.org/ntsb/CHI98LA302.md): Cessna 421B · Columbus, IN · Accident · Serious injuries · Limited investigation · Final report · Aug 6, 1998 · N5MJ · Substantial damage
  > the pilot-in-commands failure to maintain airspeed and the subsequent stall/mush. Factors associated with the accident were the open baggage door and the inadequate aircraft preflight.
- [NTSB MIA98WA157](https://openairdocs.org/ntsb/MIA98WA157.md): Cessna 421B · Nassau, Bahamas · Accident · Serious injuries · Foreign investigation · May 11, 1998 · N17BN · Substantial damage
- [NTSB LAX98LA121](https://openairdocs.org/ntsb/LAX98LA121.md): Cessna 421B · Show Low, AZ · Accident · No injuries · Limited investigation · Final report · Mar 18, 1998 · N70PD · Substantial damage
  > The pilot's failure to attain the proper alignment on the runway due to the obscuration by snow of the runway and on the airplane's windows.
- [NTSB SEA97LA030](https://openairdocs.org/ntsb/SEA97LA030.md): Cessna 421B · Olympia, WA · Accident · No injuries · Limited investigation · Final report · Nov 19, 1996 · N8005Q · Substantial damage
  > inoperative deicing equipment, due to multiple wing boot holes and malfunctioning control/shuttle valves; subsequent build-up of airframe (wing) ice; and failure of the pilot to maintain adequate airspeed during the flare for landing. Factors relating to the…
- [NTSB FTW96LA366](https://openairdocs.org/ntsb/FTW96LA366.md): Cessna 421B · Conchas, NM · Accident · Serious injuries · Limited investigation · Final report · Aug 31, 1996 · N55HU · Destroyed
  > The pilot's inadvertent flight into hail which shattered the pilot's windshield and resulted in his incapacitation due to hypoxia.
- [NTSB LAX96WA132](https://openairdocs.org/ntsb/LAX96WA132.md): Cessna 421B · Vigan, Philippines · Accident · 1 fatal · Foreign investigation · Mar 3, 1996 · N69905 · Destroyed
- [NTSB ATL96LA011](https://openairdocs.org/ntsb/ATL96LA011.md): Cessna 421 · Peachtree City, GA · Accident · No injuries · Limited investigation · Final report · Nov 17, 1995 · N707WC · Substantial damage
  > Deer on the runway during a night landing that resulted in the collision.
- [NTSB CHI96LA028](https://openairdocs.org/ntsb/CHI96LA028.md): Cessna 421 · Romeo, MI · Accident · No injuries · Limited investigation · Final report · Nov 12, 1995 · N1588G · Substantial damage
  > the failure of the pilot to maintain sufficient airspeed during landing, causing the inadvertent stall. A factor was the icing conditions.
- [NTSB CHI95FA328](https://openairdocs.org/ntsb/CHI95FA328.md): Cessna 421B · Coldwater, MI · Accident · 1 fatal · Field investigation · Final report · Sep 21, 1995 · N14A · Destroyed
  > failure of the pilot to maintain adequate airspeed, while maneuvering (turning) at low altitude, which resulted in an inadvertent stall and collision with the terrain. Factors relating to the accident were: the adverse weather conditions, and the lack of…
- [NTSB MIA95LA002](https://openairdocs.org/ntsb/MIA95LA002.md): Cessna 421B · Stuart, FL · Accident · No injuries · Limited investigation · Final report · Oct 3, 1994 · N701AM · Substantial damage
  > The improper rigging of the landing gear safety squat switch by other maintenance personnel. Contributing to the accident was the contamination of the gear squat switch with corrosion and water.
- [NTSB ATL94IA055](https://openairdocs.org/ntsb/ATL94IA055.md): Cessna 421B · Lagrange, GA · Incident · No injuries · Incident investigation · Final report · Feb 28, 1994 · N421HA · Minor damage
  > The pilot's intentional swerve off the taxiway to avoid a ground collision. A factor in the incident was an undetermined malfunction of the airplane's normal brake system.
- [NTSB CHI94MA032](https://openairdocs.org/ntsb/CHI94MA032.md): Cessna 421B · Greensburg, IN · Accident · 5 fatal · Major investigation · Final report · Nov 6, 1993 · N41010 · Destroyed
  > an inadvertent stall by the pilot in command. Factors associated with the accident are the icing conditions and low ceilings.
- [NTSB FTW93LA254](https://openairdocs.org/ntsb/FTW93LA254.md): Cessna 421B · Oak Grove, LA · Accident · Serious injuries · Limited investigation · Final report · Sep 6, 1993 · N747BW · Substantial damage
  > Directional control not maintained by the pilot for undetermined reasons. Factors were a fence and trees.
- [NTSB ATL93LA108](https://openairdocs.org/ntsb/ATL93LA108.md): Cessna 421B · Attalla, AL · Accident · No injuries · Limited investigation · Final report · Jun 10, 1993 · N699DT · Destroyed
  > The failure of the left engine turbocharger due to rotor shaft seizure, which resulted in a loss of engine power.
- [NTSB CHI93FA149](https://openairdocs.org/ntsb/CHI93FA149.md): Cessna 421B · Valley Park, MO · Accident · 2 fatal · Field investigation · Final report · Apr 29, 1993 · N4939M · Destroyed
  > Improper planning/decision by the pilot, which resulted in fuel exhaustion, due to an inadequate supply of fuel, and the pilot's failure to maintain control of the airplane during approach to an emergency landing. A related factor was: failure of the pilot to…
- [NTSB ATL93LA081](https://openairdocs.org/ntsb/ATL93LA081.md): Cessna 421B · Fort Payne, AL · Accident · No injuries · Limited investigation · Final report · Apr 15, 1993 · N14A · Substantial damage
  > The pilot's failure to compensate for winds during the initial takeoff that resulted in the airplane colliding with the runway, exceeding the design limits of the aircraft and upon landing at the destination airport, the collapse of the main landing gear.
- [NTSB LAX92LA279](https://openairdocs.org/ntsb/LAX92LA279.md): Cessna 421B · Shelter Cove, CA · Accident · Serious injuries · Limited investigation · Final report · Jul 5, 1992 · N929DB · Destroyed
  > The pilot's inadequate preflight inspection of the aircraft and his failure to ensure that the control surface locks were removed prior to flight.
- [NTSB LAX92FA260](https://openairdocs.org/ntsb/LAX92FA260.md): Cessna 421B · Monterey, CA · Accident · 3 fatal · Field investigation · Final report · Jun 24, 1992 · N628RJ · Destroyed
  > The owner/pilot's poor judgement in attempting an operation beyond his experience and ability, which resulted in his failure to attain an adequate climb profile necessary for terrain clearance. Also, the owner/pilot lacked instrument experience, and was…
- [NTSB NYC92LA124](https://openairdocs.org/ntsb/NYC92LA124.md): Cessna 421B · Columbus, OH · Accident · No injuries · Limited investigation · Final report · Jun 22, 1992 · N39PW · Substantial damage
  > The electrical fire which started in a component that was part of a door seal modification. Also causal to the accident was the installation of this unapproved airplane modification.
- [NTSB DEN92FA024](https://openairdocs.org/ntsb/DEN92FA024.md): Cessna 421B · Steamboat Spgs, CO · Accident · 3 fatal · Field investigation · Final report · Jan 4, 1992 · N1974G · Destroyed
  > Airframe ice and the pilot's failure to remove it. Factors were: aircraft weight exceeded and lack of pilot certification.
- [NTSB LAX92LA055](https://openairdocs.org/ntsb/LAX92LA055.md): Cessna 421B · San Andreas, CA · Accident · No injuries · Limited investigation · Final report · Nov 29, 1991 · N421DP · Substantial damage
  > The pilot's inadequate preflight inspection and his failure to follow the airplane's checklist. A contributing factor was the dark night condition.
- [NTSB DEN91LA136](https://openairdocs.org/ntsb/DEN91LA136.md): Cessna 421B · Pagosa Springs, CO · Accident · No injuries · Limited investigation · Final report · Aug 16, 1991 · N80RS · Substantial damage
  > Inadequate preflight of the aircraft by the pilot in command. A factor was: failure of the pilot in command to properly latch the cargo door.
- [NTSB DEN91LA101](https://openairdocs.org/ntsb/DEN91LA101.md): Cessna 421B · Colorado Spring, CO · Accident · No injuries · Limited investigation · Final report · Jul 17, 1991 · N768RA · Substantial damage
  > A fractured fuel line and an improperly performed annual inspection.
- [NTSB LAX91LA129](https://openairdocs.org/ntsb/LAX91LA129.md): Cessna 421B · Tucson, AZ · Accident · Serious injuries · Limited investigation · Final report · Mar 12, 1991 · N924MD · Substantial damage
  > The fatigue failure of the right engine turbo exhaust clamp, and, the failure of the flying pilot to complete the single engine emergency procedures in a timely manner. A factor in the accident was the failure of the pilot in command to adequately supervise…
- [NTSB FTW91FA027](https://openairdocs.org/ntsb/FTW91FA027.md): Cessna 421B · Muskogee, OK · Accident · 6 fatal · Field investigation · Final report · Jan 6, 1991 · N421H · Destroyed
  > The pilot's failure to maintain control of the aircraft, due to spatial disorientation. Factors related to the accident were: darkness, adverse weather conditions, and the pilot's physical impairment from the chronic sinus infection.
- [NTSB MIA91FA023](https://openairdocs.org/ntsb/MIA91FA023.md): Cessna 421B · Flamingo, FL · Accident · 3 fatal · Field investigation · Final report · Nov 9, 1990 · N21ST · Destroyed
  > An undetermined airframe/component/system failure/malfunction, which resulted in a fuel fed fire in the left wing.
- [NTSB BFO91LA013](https://openairdocs.org/ntsb/BFO91LA013.md): Cessna 421B · Morganfield, KY · Accident · No injuries · Limited investigation · Final report · Oct 7, 1990 · N69900 · Substantial damage
  > Lost of power of both engines due to the pilot's mismanagement of the fuel system.
- [NTSB ATL90FA179](https://openairdocs.org/ntsb/ATL90FA179.md): Cessna 421B · Jefferson, GA · Accident · 3 fatal · Field investigation · Final report · Sep 25, 1990 · N316MH · Destroyed
  > Failure of the pilot to perform the correct emergency procedures, when confronted with a loss of engine power, and his failure to maintain minimum control speed (VMC), which resulted in a loss of aircraft control.
- [NTSB MIA90LA192](https://openairdocs.org/ntsb/MIA90LA192.md): Cessna 402B · St. Thomas · Accident · No injuries · Limited investigation · Final report · Sep 24, 1990 · N4440K · Substantial damage
  > Separation of the left main landing gear torque tube bracket assembly due to sheared rivets from a previous hard side load landing which was not reported.
- [NTSB MIA90LA186](https://openairdocs.org/ntsb/MIA90LA186.md): Cessna 421B · Pompano Beach, FL · Accident · No injuries · Limited investigation · Final report · Sep 22, 1990 · N41JT · Substantial damage
  > The failure of the pilot to initiate a go-around due to being high on final approach and as a result, failure to attain the correct point of touchdown and his excessive application of brakes which resulted in failure of the right main tire and loss of…
- [NTSB LAX90LA288](https://openairdocs.org/ntsb/LAX90LA288.md): Cessna 421 · Concord, CA · Accident · No injuries · Limited investigation · Final report · Aug 9, 1990 · N76SH · Substantial damage
  > The pilot's failure to follow the electrical system failure checklist. Contributing to this accident was the total electrical failure for undetermined reasons and the landing gear being unlocked.
- [NTSB FTW90LA154](https://openairdocs.org/ntsb/FTW90LA154.md): Cessna 421B · El Paso, TX · Accident · No injuries · Limited investigation · Final report · Aug 8, 1990 · N469RJ · Substantial damage
  > The pilot's improper single engine emergency procedures.
- [NTSB BFO90LA014](https://openairdocs.org/ntsb/BFO90LA014.md): Cessna 421B · Chesapeake, VA · Accident · Minor injuries · Limited investigation · Final report · Nov 28, 1989 · N3359Q · Destroyed
  > The pilot misjudged distance and altitude to the runway, while on final approach to land. The light condition at dusk was a related factor.
- [NTSB MIA89LA183](https://openairdocs.org/ntsb/MIA89LA183.md): Cessna 421B · Fort Lauderdale, FL · Accident · No injuries · Limited investigation · Final report · Jul 3, 1989 · N149RT · Substantial damage
  > Improper flare by the pilot. The light condition (dark night) was considered to be a contributing factor.
- [NTSB MIA89WA123](https://openairdocs.org/ntsb/MIA89WA123.md): Cessna 421B · Great Harbor, Bahamas · Accident · 1 fatal · Foreign investigation · Apr 1, 1989 · N4470L · Destroyed
- [NTSB FTW89LA062](https://openairdocs.org/ntsb/FTW89LA062.md): Cessna 421B · San Antonio, TX · Accident · No injuries · Limited investigation · Final report · Mar 3, 1989 · N5999M · Destroyed
  > The failure of the pilot to follow the proper procedures/directives by not following the glideslope which resulted in not being able to attain the proper touchdown point.
- [NTSB DEN89FA034](https://openairdocs.org/ntsb/DEN89FA034.md): Cessna 421 · Tooele, UT · Accident · 2 fatal · Field investigation · Final report · Nov 16, 1988 · N222BL · Substantial damage
- [NTSB DEN88LA208](https://openairdocs.org/ntsb/DEN88LA208.md): Cessna 421B · Winner, SD · Accident · No injuries · Limited investigation · Final report · Sep 20, 1988 · N44HV · Substantial damage
  > The private plt and 4 pax were attempting takeoff on rwy 13, a 3,900 x 30 ft asphalt rwy. The plt said the acft accelerated to 100 knots but he could not raise the nose for lift off. The plt said he aborted the takeoff and intentionally ground looped to the…
- [NTSB ATL88FA191](https://openairdocs.org/ntsb/ATL88FA191.md): Cessna 421B · Knoxville, TN · Accident · 1 fatal · Field investigation · Final report · Jun 9, 1988 · N700SC · Destroyed
- [NTSB MIA88FA005](https://openairdocs.org/ntsb/MIA88FA005.md): Cessna 421B · Deland, FL · Accident · 5 fatal · Field investigation · Final report · Oct 7, 1987 · N8043Q · Destroyed
  > The acft was observed to be flying slowly, then roll steeply to the left and dive into an unoccupied house from about 300 ft shortly after takeoff. The plt had considerable flt time but he had not flown this model, except for a 35 min checkout that morning.…
- [NTSB FTW86FPA17](https://openairdocs.org/ntsb/FTW86FPA17.md): Cessna 421 · Alvord, TX · Accident · Serious injuries · Final report · Feb 22, 1986 · N8155Q · Substantial damage
  > The acft collided with tree tops and sheared the landing gear during a forced landing off arpt. The left eng had been feathered due to loss of oil from a ruptured oil hose between the oil pump & filter. The rt eng was not developing full power because of an…
- [NTSB DEN86FA033](https://openairdocs.org/ntsb/DEN86FA033.md): Cessna 421B · Franktown, CO · Accident · Serious injuries · Field investigation · Final report · Dec 2, 1985 · N249JM · Substantial damage
  > The acft departed nashville, TN, for a flt to aspen, CO. The plts made one refueling stop at chanute, KS. The plts were unable to land at aspen or a nearby alternate arpt (eagle, CO) and elected to return back to the denver area. The plts indicated to an…
- [NTSB MKC85LA215](https://openairdocs.org/ntsb/MKC85LA215.md): Cessna 421B · Olathe, KS · Accident · No injuries · Limited investigation · Final report · Sep 13, 1985 · N88DM · Substantial damage
  > During the takeoff roll on an IFR flt, the right eng lost pwr and the plt aborted the takeoff. The acft ran off the end of the rwy, across two ditches, one road, through a fence and struck a post in a fld. During post accident tests, the right eng would run…
- [NTSB MIA85LA169](https://openairdocs.org/ntsb/MIA85LA169.md): Cessna 421B · Lakeland, FL · Accident · No injuries · Limited investigation · Final report · May 15, 1985 · N8083Q · Substantial damage
  > During takeoff at Lakeland, FL, the left main wheel assembly separated from the acft & struck the leading edge of the horizontal stabilizer, causing substantial damage. The plt did not know the wheel had come off until he was notified by ATC. He then diverted…
- [NTSB FTW85LQG01](https://openairdocs.org/ntsb/FTW85LQG01.md): Cessna 421B · Amarillo, TX · Accident · No injuries · Final report · Apr 19, 1985 · N3380Q · Substantial damage
  > The acft ground looped following a collapse of the left main gear after a landing roll of aprx 600 to 700 ft. post accident inspection of the gear revealed a bolt had backed out of the gear down lock arm where it locks overcenter.

Next page: https://openairdocs.org/ntsb.md?model=2076014&page=3

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2076014'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=2076014&page=2

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