# NTSB investigations: Airframe/component/system failure/malfunction 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 37 of 79 · 3,929 cases ## Cases, newest first - [NTSB MIA94LA105](https://openairdocs.org/ntsb/MIA94LA105.md): Wallace Thorp T-18 · Boynton Beach, FL · Accident · 1 fatal · Limited investigation · Final report · Mar 27, 1994 · N215CK · Destroyed > The pilot in command's exceeding the designed stress limits of the aircraft resulting in overload failure of the left wing outboard attach fitting. This resulted in inflight separation of the outboard left wing, and subsequent inflight collision with the… - [NTSB MIA94LA100](https://openairdocs.org/ntsb/MIA94LA100.md): Bell 206L · Orlando, FL · Accident · Serious injuries · Limited investigation · Final report · Mar 25, 1994 · N16705 · Substantial damage > The pilot's failure to cross-check a faulty engine speed indication with other engine performance indications to verify whether an engine malfunction had actually occurred, and his failure to maintain adequate rotor RPM during an emergency landing. The… - [NTSB ATL94LA070](https://openairdocs.org/ntsb/ATL94LA070.md): Mooney M20J · Muscle Shoals, AL · Accident · No injuries · Limited investigation · Final report · Mar 25, 1994 · N4780H · Substantial damage > Was the loose throttle cable, and the pilot's failure to abort the takeoff when the engine did not produce full power. A factor was the inadequate maintenance inspection of the engine. - [NTSB CHI94IA111](https://openairdocs.org/ntsb/CHI94IA111.md): Beech BE200 · Rochester, IN · Incident · No injuries · Incident investigation · Final report · Mar 16, 1994 · N210SU · Minor damage > the airplane painter/refinishers' failure to follow appropriate procedures/directives pertinent to the masking, stripping, painting and cleaning of the airplane cabin windows, which resulted in the in-flight failure of the right aft cabin window. A related… - [NTSB LAX94LA163](https://openairdocs.org/ntsb/LAX94LA163.md): Rockwell 681 · Phoenix, AZ · Accident · No injuries · Limited investigation · Final report · Mar 13, 1994 · N78CH · Substantial damage > the failure of the hydraulic and nitrogen system pressure lines, due to an inadequate maintenance inspection program, which failed to detect the corrosion condition of the lines. - [NTSB LAX94LA162](https://openairdocs.org/ntsb/LAX94LA162.md): Head Balloons AX9-118 · Sedona, AZ · Accident · Serious injuries · Limited investigation · Final report · Mar 12, 1994 · N45289 · Substantial damage > the failure of the pilot lights and burners to relight in flight once extinguished due to the installation of an incorrect gas pressure regulator. - [NTSB LAX94FA159](https://openairdocs.org/ntsb/LAX94FA159.md): Piper PA-28-180 · Los Angeles, CA · Accident · 1 fatal · Field investigation · Final report · Mar 12, 1994 · N8129W · Destroyed > the failure of the upper engine compartment cowl to remain attached to the lower cowl during initial climb as a result of inadequate maintenance and replacement practices by the aircraft owner. - [NTSB SEA94LA080](https://openairdocs.org/ntsb/SEA94LA080.md): Unrein 80-P51D · Scapp00se, OR · Accident · No injuries · Limited investigation · Final report · Mar 10, 1994 · N51PL · Substantial damage > The inadvertent unlocking of the tailwheel lock. Factors include the manufacturer's inadequate tailwheel lock. - [NTSB SEA94LA076](https://openairdocs.org/ntsb/SEA94LA076.md): Tucker Kitfox IV · Vancouver, WA · Accident · Minor injuries · Limited investigation · Final report · Mar 8, 1994 · N1942J · Substantial damage > Aileron flight controls that were jammed by the pilot's seat slipping from its mount. Factors include inadequate seat installation by the manufacturer. - [NTSB MIA94FA085](https://openairdocs.org/ntsb/MIA94FA085.md): Daffron, Harold C. Varieze · Oxford, MS · Accident · 1 fatal · Field investigation · Final report · Mar 6, 1994 · N3769D · Destroyed > Poor planning/decision by the pilot-in-command for failure to perform high and low speed taxi tests before the flight after repairs and modification of the airplane. Additionally, failure or malfunction of the flight control system for undetermined reasons,… - [NTSB MIA94LA083](https://openairdocs.org/ntsb/MIA94LA083.md): Harper, Jack M. Mustang II · Lake City, FL · Accident · Minor injuries · Limited investigation · Final report · Mar 5, 1994 · N20768 · Substantial damage > The failure of the bolts which secure the right main landing gear wheel assembly to the strut assembly. - [NTSB FTW94FA091](https://openairdocs.org/ntsb/FTW94FA091.md): Cessna 310K · Wichita Falls, TX · Accident · 4 fatal · Field investigation · Final report · Mar 4, 1994 · N474AR · Destroyed > Was the loss of control due to the pilot's spatial disorientation following a complete electrical system failure. Factors were the dark night and the electrical failure as result of burned out wiring terminal. - [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 FTW94LA087](https://openairdocs.org/ntsb/FTW94LA087.md): Grumman G-164 · Almyra, AR · Accident · No injuries · Limited investigation · Final report · Feb 26, 1994 · N730Y · Substantial damage > The partial failure of the brake master cylinder assembly for undetermined reasons. A factor was the soft terrain adjacent to the runway. - [NTSB LAX94LA132](https://openairdocs.org/ntsb/LAX94LA132.md): Bell TH-1L · Etna, CA · Accident · Minor injuries · Limited investigation · Final report · Feb 23, 1994 · N204AP · Substantial damage > The faituge of the gear tooth which caused the failure of the 42-degree gear box. - [NTSB ATL94LA050](https://openairdocs.org/ntsb/ATL94LA050.md): Argo Minimax · Franklin, TN · Accident · Serious injuries · Limited investigation · Final report · Feb 18, 1994 · NONE · Substantial damage > The pilot's failure to secure cargo in the cockpit. - [NTSB LAX94LA135](https://openairdocs.org/ntsb/LAX94LA135.md): Cessna 340A · Dunsmuir, CA · Accident · No injuries · Limited investigation · Final report · Feb 7, 1994 · N1362C · Substantial damage > The mechanics improper maintenance of the airplane's left brake system by failing to service its hydraulic reservoir. The lack of hydraulic fluid in the left brake reservoir which precipitated the left brake failure is a factor in this accident. - [NTSB MIA94GA099](https://openairdocs.org/ntsb/MIA94GA099.md): Cessna 172N · Opa-Locka, FL · Incident · No injuries · Final report · Feb 4, 1994 · N9003E · Minor damage > Inadequate maintenance inspection and lubrication of the flap rollers which resulted in the left flap inboard roller becoming jammed in the track during flap retraction. - [NTSB FTW94IA077](https://openairdocs.org/ntsb/FTW94IA077.md): Fokker F28 MK O100 · Amarillo, TX · Incident · No injuries · Incident investigation · Final report · Feb 1, 1994 · N1437B · Minor damage > The failure of the outer bearing due to a lack of lubrication. - [NTSB CHI94MA072](https://openairdocs.org/ntsb/CHI94MA072.md): Cessna 421C · Mccook, NE · Accident · 2 fatal · Major investigation · Final report · Jan 26, 1994 · N5468G · Destroyed > Improper in-flight planning/decision by the pilot, and the accumulation of airframe ice, which resulted in an inadvertent stall. Factors associated with the accident were: partial failure of both alternators, which resulted in a subsequent electrical system… - [NTSB LAX94LA104](https://openairdocs.org/ntsb/LAX94LA104.md): Beech 58 · Modesto, CA · Accident · No injuries · Limited investigation · Final report · Jan 25, 1994 · N1082W · Substantial damage > The pilot's failure to perform the emergency landing gear extension and other maintenance personnel's inadequate 100-hour inspection. The partial electrical failure and the pilot apprehension/anxiety due to a possible electrical fire were factors in this… - [NTSB MIA94FA057](https://openairdocs.org/ntsb/MIA94FA057.md): Cessna 421C · Titusville, FL · Accident · 3 fatal · Field investigation · Final report · Jan 21, 1994 · N777BE · Destroyed > Failure of the pilot-in-command to maintain VMC resulting in the inflight loss of control. Contributing to the accident was the fatigue failure of a section of pipe adjacent to a flange which connects to the turbocharger oil outlet of the left engine assembly. - [NTSB FTW94IA070](https://openairdocs.org/ntsb/FTW94IA070.md): Boeing 737-2H4 · Little Rock, AR · Incident · No injuries · Incident investigation · Final report · Jan 19, 1994 · N53SW · Minor damage > Was the landing gear separation due to an undetermined cause. - [NTSB MIA94LA054](https://openairdocs.org/ntsb/MIA94LA054.md): Robinson R22B · Gurabo, PR · Accident · No injuries · Limited investigation · Final report · Jan 16, 1994 · N193HC · Substantial damage > Complete separation of one of the two vee-belts, and complete separation of 1/2 of the remaining belt. Contributing to the accident was the dark night condition and unsuitable terrain encountered during the autorotative landing. - [NTSB CHI94LA062](https://openairdocs.org/ntsb/CHI94LA062.md): Piper PA-28-236 · Highland, IN · Accident · No injuries · Limited investigation · Final report · Jan 13, 1994 · N8117Z · Substantial damage > An electrical system failure due to a fractured alternator mounting lug. Factors related to the accident were the rough terrain, and decreasing visibility due to snow and darkness. - [NTSB MIA94MA048](https://openairdocs.org/ntsb/MIA94MA048.md): Beech B90 · Okeechobee, FL · Accident · 10 fatal · Major investigation · Final report · Jan 5, 1994 · N230TW · Destroyed > The pilot's improper remedial action concerning a right engine power anomaly, and his failure to maintain adequate airspeed during go-around from an aborted precautionary landing, which resulted in a loss of aircraft control and an uncontrolled descent.… - [NTSB MIA94LA047](https://openairdocs.org/ntsb/MIA94LA047.md): Piper PA-28-161 · Vicksburg, MS · Accident · No injuries · Limited investigation · Final report · Dec 31, 1993 · N5192W · Substantial damage > The pilot did not maintain the proper glidepath. Failure of the electrical system and inadequate maintenance by company maintenance personnel were factors in the accident. - [NTSB FTW94LA055](https://openairdocs.org/ntsb/FTW94LA055.md): Ebershoff Steen Skybolt · Erie, CO · Accident · No injuries · Limited investigation · Final report · Dec 15, 1993 · N360HP · Substantial damage > Was flutter of the flight controls. - [NTSB CHI94LA054](https://openairdocs.org/ntsb/CHI94LA054.md): Piper PA-28R-200 · Lacon, IL · Accident · No injuries · Limited investigation · Final report · Dec 13, 1993 · N66CS · Substantial damage > The pilot misjudged the landing flare. Factors related to the accident were: the dark night, the pilot's lack of recent night experience, and the failure of the airplane's electrical system. - [NTSB LAX94LA075](https://openairdocs.org/ntsb/LAX94LA075.md): Bell 206B-III · Flagstaff, AZ · Accident · No injuries · Limited investigation · Final report · Dec 11, 1993 · N2773R · Substantial damage > The pilot's improper initiation of an emergency autorotation into unsuitable terrain and subsequent hard landing and rollover. A false annunciator indication, a failure of the N1 tach generator, the pilot's continued flight with a known aircraft defect, and… - [NTSB ATL94FA029](https://openairdocs.org/ntsb/ATL94FA029.md): Piper PA-32R-301T · Covington, GA · Accident · 1 fatal · Field investigation · Final report · Dec 10, 1993 · N8340Y · Destroyed > Spatial disorientation experienced by the pilot, resulting in his failure to maintain aircraft control. Factors were the total failure of the engine driven vacuum pump, and the night, cloud conditions prevailing at the time of the accident. - [NTSB ATL94FA028](https://openairdocs.org/ntsb/ATL94FA028.md): Bellanca 17-30A · Lagrange, GA · Accident · 1 fatal · Field investigation · Final report · Dec 10, 1993 · N4195B · Destroyed > Was the pilot's failure to correct a known low battery condition before departing, which resulted in a loss of electrical power during an instrument approach. Factors were the dark night and the low scattered cloud layer. - [NTSB NYC94IA035](https://openairdocs.org/ntsb/NYC94IA035.md): Airbus Industrie A-300 · Newark, NJ · Incident · No injuries · Incident investigation · Final report · Dec 7, 1993 · N16982 · Minor damage > The separation of the right outboard translating cowl on the #2 engine thrust reverser as a result of inadequate bonding material. - [NTSB FTW94FA044](https://openairdocs.org/ntsb/FTW94FA044.md): Upton Mustang M-II · Guthrie, OK · Accident · 1 fatal · Field investigation · Final report · Dec 5, 1993 · N4YP · Destroyed > Was the in flight failure of the left aileron for reasons undetermined. - [NTSB NYC94LA032](https://openairdocs.org/ntsb/NYC94LA032.md): Piper PA-28-140 · North Haven, ME · Accident · No injuries · Limited investigation · Final report · Dec 4, 1993 · N55719 · Substantial damage > The pilot's use of excessive speed and altitude during the approach which resulted in a landing overrun of the runway. Factors were a precautionary landing and a ravine. - [NTSB LAX94LA054](https://openairdocs.org/ntsb/LAX94LA054.md): Hiller UH-12E · Salinas, CA · Accident · Minor injuries · Limited investigation · Final report · Nov 20, 1993 · N161HA · Substantial damage > a fatigue failure of the torsion-tension bar pin due to fretting corrosion. A factor in this accident was an inadequate quality of material utilized in the manufacture of the pin. - [NTSB BFO94FA008](https://openairdocs.org/ntsb/BFO94FA008.md): Mooney MO-20J · Seekonk, MA · Accident · 2 fatal · Field investigation · Final report · Nov 14, 1993 · N4224H · Destroyed > The pilot's inadequate in flight planning/decision to continue flight into known adverse weather conditions after the engine's dry air vacuum pump failed and the pilot's failure to maintain airplane control during approach. A factor in the accident was the… - [NTSB LAX94LA043](https://openairdocs.org/ntsb/LAX94LA043.md): Hiller UH-12E · Salinas, CA · Accident · No injuries · Limited investigation · Final report · Nov 13, 1993 · N149HA · Destroyed > The pilot's improper handling of the helicopter which resulted in overloading of the rotor system in a maneuvering turn during aerial application of chemical, and subsequent failure of the main rotor paddle assembly. - [NTSB SEA94LA030](https://openairdocs.org/ntsb/SEA94LA030.md): Hawkins & Powers UH-1B · North Bend, WA · Accident · Minor injuries · Limited investigation · Final report · Nov 12, 1993 · N91NW · Substantial damage > Total failure of the intermediate gearbox. The lack of suitable terrain for an autorotation was a factor. - [NTSB SEA94LA029](https://openairdocs.org/ntsb/SEA94LA029.md): Bell 47G3B2 · Toledo, WA · Accident · No injuries · Limited investigation · Final report · Nov 9, 1993 · N8169J · Substantial damage > Transmission shear bolts failed causing a loss of power to the rotor system, and the pilot encountered unsuitable terrain during his autorotation attempt. - [NTSB LAX94LA030](https://openairdocs.org/ntsb/LAX94LA030.md): Beech 200 · Reno, NV · Accident · No injuries · Limited investigation · Final report · Oct 28, 1993 · N191FL · Substantial damage > The improper overhaul of the right main landing gear actuator by maintenance personnel, and the operator's failure to assure that the airplane manufacturer's mandatory service bulletin requiring modification of the gear motor circuit protection was… - [NTSB LAX94LA024](https://openairdocs.org/ntsb/LAX94LA024.md): Cessna 150K · California City, CA · Accident · No injuries · Limited investigation · Final report · Oct 23, 1993 · N6067G · Substantial damage > Failure of maintenance personnel to assure that the nose wheel axle was properly secured during previous maintenance. - [NTSB LAX94LA017](https://openairdocs.org/ntsb/LAX94LA017.md): Aerospatiale SA-315 · Beckwourth, CA · Accident · Serious injuries · Limited investigation · Final report · Oct 18, 1993 · N49511 · Substantial damage > was the worn collective servo causing a hydraulic lock and not allowing the pilot to lower the collective. This condition caused the main rotor blades rpm to decay. - [NTSB FTW94LA013](https://openairdocs.org/ntsb/FTW94LA013.md): Cessna 172K · Jacksonville, TX · Accident · No injuries · Limited investigation · Final report · Oct 16, 1993 · N7825T · Substantial damage > The pilot's failure to follow proper emergency procedures to troubleshoot the electrical system. A factor was an electrical system irregularity of an undetermined nature. - [NTSB CHI94IA017](https://openairdocs.org/ntsb/CHI94IA017.md): Piper PA-24-250 · Thief Rvr Falls, MN · Incident · No injuries · Incident investigation · Final report · Oct 14, 1993 · N6846P · No damage > Fatigue failure of the propeller blade, originating from a corrosion pit. - [NTSB CHI94LA013](https://openairdocs.org/ntsb/CHI94LA013.md): Hughes 269A · Coldwater, MI · Accident · No injuries · Limited investigation · Final report · Oct 12, 1993 · N7032U · Substantial damage > the fatigue failure of the tailboom support strut attachment lug. - [NTSB MIA94LA003](https://openairdocs.org/ntsb/MIA94LA003.md): Douglas DC-3C · San Juan, PR · Accident · No injuries · Limited investigation · Final report · Oct 7, 1993 · N781T · Substantial damage > Partial failure of a wing rib due to exfoliation corrosion and inadequate inspection of the aircraft by company maintenance personnel. - [NTSB FTW94LA007](https://openairdocs.org/ntsb/FTW94LA007.md): Cessna 152 · San Angelo, TX · Accident · No injuries · Limited investigation · Final report · Oct 6, 1993 · N68108 · Destroyed > Was malfunction of the throttle control push/pull rod and cable. A factor was unsuitable terrain for the forced landing. - [NTSB MIA94FA001](https://openairdocs.org/ntsb/MIA94FA001.md): Mcdonnell Douglas MD-83 · Miami, FL · Accident · Serious injuries · Field investigation · Final report · Oct 3, 1993 · 9YTHR · Substantial damage > The failure of the water heater relay and the overpressure relief valve to operate properly. In addition, the design of the relief valve was inadequate in that it allowed the o-ring to migrate from its normal position preventing the valve from opening. - [NTSB CHI94FA001](https://openairdocs.org/ntsb/CHI94FA001.md): Beech G35 · Webster, WI · Accident · 1 fatal · Field investigation · Final report · Oct 2, 1993 · N4421D · Destroyed > In-flight breakup of the airplane for an undetermined reason. Next page: https://openairdocs.org/ntsb.md?occurrence=130&page=38 ## 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 o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?occurrence=130&page=37 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.