# 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 38 of 79 · 3,929 cases

## Cases, newest first

- [NTSB BFO93FA188](https://openairdocs.org/ntsb/BFO93FA188.md): Ercoupe 415-CD · Charles City, VA · Accident · 2 fatal · Field investigation · Final report · Sep 28, 1993 · N4576B · Destroyed
  > the pilot exceeded the design stress limits of the airplane which resulted in an in-flight break-up.
- [NTSB CHI93FA378](https://openairdocs.org/ntsb/CHI93FA378.md): Aero Commander 690A · Lansing, MI · Accident · 2 fatal · Field investigation · Final report · Sep 27, 1993 · N242TC · Destroyed
  > was the pilot-in-command not maintaining aircraft control during the intermittent operation of the electrically operated attitude gyro. Factor's associated with this accident are an fluctuating (intermittent) electrical system inverter and the…
- [NTSB MIA93FA200](https://openairdocs.org/ntsb/MIA93FA200.md): Beech C35 · Ocklawaha, FL · Accident · 1 fatal · Field investigation · Final report · Sep 24, 1993 · N5936C · Destroyed
  > Failure of a propeller blade for an undetermined reason, and failure of the pilot to maintain adequate airspeed, which resulted in an inadvertent stall. Factors related to the accident were: low pass performed by the pilot, and his possible impairment from…
- [NTSB SEA93LA207](https://openairdocs.org/ntsb/SEA93LA207.md): Bell UH-1B · Pierce, ID · Accident · No injuries · Limited investigation · Final report · Sep 23, 1993 · N3979C · Substantial damage
  > Separation of the 90 degree gearbox after fatigue failure of the gearbox attach bolts. Factors include hilly/mountainous terrain.
- [NTSB MIA93LA202](https://openairdocs.org/ntsb/MIA93LA202.md): Cessna 172M · Hollywood, FL · Accident · No injuries · Limited investigation · Final report · Sep 22, 1993 · N20457 · Substantial damage
  > Inadvertent exceeding of vfe with the flaps extended by the student pilot while practicing maneuvers.
- [NTSB CHI93IA372](https://openairdocs.org/ntsb/CHI93IA372.md): Boeing 737-3B7 · Indianapolis, IN · Incident · No injuries · Incident investigation · Final report · Sep 21, 1993 · N527AU · No damage
  > an undetermined problem which resulted in the physical impairment of flight attendants, passengers and the first officer.
- [NTSB CHI93LA373](https://openairdocs.org/ntsb/CHI93LA373.md): Beech 18-C45G · Jeffersonville, IN · Accident · No injuries · Limited investigation · Final report · Sep 20, 1993 · N80323 · Substantial damage
  > the mechanical binding of the landing gear extension mechanism.
- [NTSB CHI93LA365](https://openairdocs.org/ntsb/CHI93LA365.md): Grumman AA5B · Aurora, IL · Accident · No injuries · Limited investigation · Final report · Sep 18, 1993 · N55VL · Substantial damage
  > the fatigue failure and separation of a portion of propeller blade during cruise flight. Related factors are the damage to the flat face of the blade, and inadequate maintenance inspection of the propeller.
- [NTSB FTW93LA261](https://openairdocs.org/ntsb/FTW93LA261.md): Culver V · Carlsbad, NM · Accident · Minor injuries · Limited investigation · Final report · Sep 17, 1993 · N44680 · Destroyed
  > An inadvertent stall when the pilot lowered the landing gear. A factor was a leaking o-ring in the propeller governor.
- [NTSB SEA93LA217](https://openairdocs.org/ntsb/SEA93LA217.md): Beech G35 · Arlington, WA · Accident · No injuries · Limited investigation · Final report · Sep 15, 1993 · N4641D · Substantial damage
  > Fracture of the left stabilizer spar.
- [NTSB BFO93IA176](https://openairdocs.org/ntsb/BFO93IA176.md): Douglas DC-8-63 · Toledo, OH · Incident · No injuries · Incident investigation · Final report · Sep 15, 1993 · N870BX · Minor damage
  > The operator maintenance personnel's failure to perform an adequate inspection of the airplane, which led to a worn aileron cable which separated in flight and caused a loss of control.
- [NTSB BFO93IA175](https://openairdocs.org/ntsb/BFO93IA175.md): Boeing 757-200ER · Jamaica, NY · Incident · No injuries · Incident investigation · Final report · Sep 13, 1993 · N757NA · No damage
  > The failure of the left hydraulic pressure switch, which caused the left yaw damper module to become inoperative resulting in uncommanded rudder movements during flight.
- [NTSB NYC93IA184](https://openairdocs.org/ntsb/NYC93IA184.md): Boeing 747-200 · New York, NY · Incident · No injuries · Incident investigation · Final report · Sep 11, 1993 · N17025 · Minor damage
  > The improper installation of the fairing by company maintenance personnel, resulting in the infligh separation of the fairing in flight.
- [NTSB BFO93FA167](https://openairdocs.org/ntsb/BFO93FA167.md): Piper PA-32RT-300T · Marshall, VA · Accident · 2 fatal · Field investigation · Final report · Sep 10, 1993 · N2207B · Destroyed
  > An inadequate annual inspection of the airplane and non-compliance with airworthiness directives by company maintenance personnel.
- [NTSB CHI93IA354](https://openairdocs.org/ntsb/CHI93IA354.md): Boeing 737-300 · St. Louis, MO · Incident · No injuries · Incident investigation · Final report · Sep 8, 1993 · N350SW · Minor damage
  > a failure of the left outboard foreflap due to the loss of the bolts that hold the inboard sequencing carriage to the foreflap attach lug.
- [NTSB CHI93LA353](https://openairdocs.org/ntsb/CHI93LA353.md): Burkhart Grob G-103 Twin Astir · New Douglas, IL · Accident · No injuries · Limited investigation · Final report · Sep 4, 1993 · N153SS · Substantial damage
  > Failure of the glider tow attachment. Factors related to the accident were the improper emergency procedure by the student, and the flight instructor's delayed remedial action..
- [NTSB CHI93IA352](https://openairdocs.org/ntsb/CHI93IA352.md): Mcdonnell Douglas DC-9-82 · St. Louis, MO · Incident · No injuries · Incident investigation · Final report · Sep 2, 1993 · N918TW · No damage
  > a fatigue failure of the power transfer unit caused by a material defect which resulted in a total hydraulic system failure.
- [NTSB BFO93LA149](https://openairdocs.org/ntsb/BFO93LA149.md): Lach Bensen B-8M · Fall River, MA · Accident · Serious injuries · Limited investigation · Final report · Sep 2, 1993 · N8447 · Substantial damage
  > FATIGUE FAILURE OF THE GYROCOPTER'S MAIN ROTOR CONTROL ARM. fACTORS RELATED TO THE ACCIDENT WERE: A LOOSE CLAMP ON THE ROTOR CONTROL ARM, DUE TO INADEQUATE MAINTENANCE OR INSPECTION, WHICH RESULTED IN CHAFING OF THE CONTROL ARM.
- [NTSB CHI93IA382](https://openairdocs.org/ntsb/CHI93IA382.md): Fairchild SA-227-AC · Grand Rapids, MN · Incident · No injuries · Incident investigation · Final report · Aug 30, 1993 · N446MA · No damage
  > the fractured aileron cable and other maintenance personnel's inadequate maintenance/adjustment.
- [NTSB LAX93LA338](https://openairdocs.org/ntsb/LAX93LA338.md): Beech 95 · Kingman, AZ · Accident · No injuries · Limited investigation · Final report · Aug 29, 1993 · N9CE · Substantial damage
  > the fatigue cracking of the propeller blade retention screw. A factor was the maintenance service bulletins for the propeller were not performed on the accident airplane.
- [NTSB MIA93LA185](https://openairdocs.org/ntsb/MIA93LA185.md): Keuthan Buccaneer II · Cocoa, FL · Accident · Serious injuries · Limited investigation · Final report · Aug 27, 1993 · N693KA · Substantial damage
  > Failure of maintenance personnel to properly reinstall a bolt and nut in the elevator control linkage, which resulted in a disconnect of the linkage and loss of elevator control.
- [NTSB SEA93FA186](https://openairdocs.org/ntsb/SEA93FA186.md): Dassault DA-10 · Hailey, ID · Accident · No injuries · Field investigation · Final report · Aug 26, 1993 · FBYCV · Substantial damage
  > The pilot-in-command's improper procedures. Factors include failure of an electrical relay, inoperative thrust reverser, poor crew coordination, and the second-in-command's improper procedures.
- [NTSB BFO93FA147](https://openairdocs.org/ntsb/BFO93FA147.md): Mooney M20B · Landover, MD · Accident · No injuries · Field investigation · Final report · Aug 24, 1993 · N74580 · Substantial damage
  > Fatigue failure of a propeller blade, which resulted in severe engine vibration and subsequent damage to the airplane. The lack of suitable terrain for a forced landing was a related factor.
- [NTSB CHI93LA334](https://openairdocs.org/ntsb/CHI93LA334.md): Burkhart Grob G103 · Hinckley, IL · Accident · Minor injuries · Limited investigation · Final report · Aug 22, 1993 · N422BG · Substantial damage
  > the failure of the cockpit canopy.
- [NTSB CHI93DEM02](https://openairdocs.org/ntsb/CHI93DEM02.md): Sheats FALCON-XP · Zeeland, MI · Accident · Minor injuries · Final report · Aug 22, 1993 · N534AA · Substantial damage
  > an inadequate maintenance inspection by the pilot/owner and the separation of the wing skin.
- [NTSB CHI93FA329](https://openairdocs.org/ntsb/CHI93FA329.md): Cessna 310N · Rockford, IL · Accident · 2 fatal · Field investigation · Final report · Aug 20, 1993 · N5005Q · Destroyed
  > an arcing electrical relay (solenoid) and subsequent overheating/fire of the starter wiring and adjacent fuel lines.
- [NTSB LAX93LA326](https://openairdocs.org/ntsb/LAX93LA326.md): Pilatus B4-PC11AF · Truckee, CA · Accident · Serious injuries · Limited investigation · Final report · Aug 17, 1993 · N205AS · Substantial damage
  > Failure of the pilot to conduct adequate preflight checks which resulted in the glider taking off with a frayed release hook cable, the pilot's failure to maintain airspeed, and the inadvertent stall.
- [NTSB FTW93IA242](https://openairdocs.org/ntsb/FTW93IA242.md): Canadair CL-600-2B16 · San Antonio, TX · Incident · No injuries · Incident investigation · Final report · Aug 17, 1993 · N392PT · No damage
  > The fracture of the rudder quadrant due to stress corrosion. A factor was the manufacturer's improper selection of material.
- [NTSB NYC93LA157](https://openairdocs.org/ntsb/NYC93LA157.md): Cessna 305A · Beach Haven, NJ · Accident · Minor injuries · Limited investigation · Final report · Aug 15, 1993 · N53136 · Substantial damage
  > Failure of the banner release system to function for an undetermined reason, which resulted in an inability of the aircraft to sustain flight once the banner began dragging in the water. A factor related to the accident was: lack of coordination between the…
- [NTSB NYC93LA156](https://openairdocs.org/ntsb/NYC93LA156.md): Cessna 177A · Lawrence, MA · Accident · Minor injuries · Limited investigation · Final report · Aug 15, 1993 · N30393 · Substantial damage
  > The improper installation of the battery box cover by maintenance personnel.
- [NTSB LAX93LA323](https://openairdocs.org/ntsb/LAX93LA323.md): Hughes 369D · Chico, CA · Accident · Minor injuries · Limited investigation · Final report · Aug 15, 1993 · N8606F · Substantial damage
  > the observer's failure to properly secure stowed items in the rear compartment prior to takeoff and the resultant foreign object damage to the tail rotor system which precluded the pilot from maintaining directional control.
- [NTSB FTW93LA236](https://openairdocs.org/ntsb/FTW93LA236.md): Beech F35 · Mena, AR · Accident · No injuries · Limited investigation · Final report · Aug 11, 1993 · N5064B · Substantial damage
  > The inflight separation of the ruddervator as result of improper balancing.
- [NTSB SEA93LA172](https://openairdocs.org/ntsb/SEA93LA172.md): Beech 76 · Portland, OR · Accident · No injuries · Limited investigation · Final report · Aug 9, 1993 · N3692X · Substantial damage
  > Jamming of the nose landing gear assembly and the pilot-in-command not maintaining the proper glidepath during the nose gear up landing.
- [NTSB FTW93LA233](https://openairdocs.org/ntsb/FTW93LA233.md): Aero Falcon Intl. Knight Falcon · Mineral Wells, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 6, 1993 · N502AF · Substantial damage
  > Failure of the autopilot which resulted in an improper flight control condition. A factor was the pilot's inability to regain control.
- [NTSB DEN93FA099](https://openairdocs.org/ntsb/DEN93FA099.md): Piper PA-32-300 · Delight, AR · Accident · 6 fatal · Field investigation · Final report · Aug 6, 1993 · N479KC · Destroyed
  > The failure of the vacuum pump, and an inoperative turn coordinator. Factors which contributed to the accident were: the pilot's loss of control of the airplane as a result of spatial disorientation, the pilot exceeding the design stress limits of the…
- [NTSB MIA93IA168](https://openairdocs.org/ntsb/MIA93IA168.md): Boeing 707-341 · Miami, FL · Incident · No injuries · Incident investigation · Final report · Aug 2, 1993 · N107BV · Minor damage
  > The improper inspection of the engine core cowling, which resulted in fatigue cracks in the forward inboard hinge support structure to go undetected. This resulted in the hinge separating and the cowling separating in flight.
- [NTSB LAX93LA312](https://openairdocs.org/ntsb/LAX93LA312.md): Piper PA-28-181 · Fresno, CA · Accident · No injuries · Limited investigation · Final report · Jul 31, 1993 · N3053N · Substantial damage
  > The pilot's inadequate flare and his improper recovery from the resulting bounced landing. Factors related to this accident were the alternator failure and the night condition.
- [NTSB LAX93LA310](https://openairdocs.org/ntsb/LAX93LA310.md): Nall Varieze · Newark, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 31, 1993 · N75PD · Destroyed
  > Improper annual inspection performed by other maintenance personnel. Factors relating to this accident were the loose exhaust bolts.
- [NTSB LAX93FA311](https://openairdocs.org/ntsb/LAX93FA311.md): Robinson R44 · El Monte, CA · Accident · 3 fatal · Field investigation · Final report · Jul 31, 1993 · N445RH · Destroyed
  > Fatigue failure of the cyclic control (stick) assembly, which resulted in loss of cyclic (pitch & roll) control.
- [NTSB DEN93LA091](https://openairdocs.org/ntsb/DEN93LA091.md): Continental Copters Tomcat MK5A · Duson, LA · Accident · No injuries · Limited investigation · Final report · Jul 30, 1993 · N9014T · Substantial damage
  > Failure of the transmission mast bearing, resulting in oil contamination and subsequent blockage of the internal oil ports and passages. Factors were: total loss of collective control and partial loss of cyclic control.
- [NTSB ANC93LA127](https://openairdocs.org/ntsb/ANC93LA127.md): Beech D18S · Kodiak, AK · Accident · Minor injuries · Limited investigation · Final report · Jul 25, 1993 · N2053D · Substantial damage
  > The pilot's improper in flight planning/decision. A factor was the partial loss of power on one engine.
- [NTSB DEN93LA084](https://openairdocs.org/ntsb/DEN93LA084.md): Air Tractor AT-301 · Garner, AR · Accident · No injuries · Limited investigation · Final report · Jul 22, 1993 · N3650U · Substantial damage
  > Total failure of one propeller blade. Factors were the continued operation of the engine during the forced landing, despite the pilot's efforts to shut it down, and the lack of suitable terrain for the forced landing.
- [NTSB CHI93IA312](https://openairdocs.org/ntsb/CHI93IA312.md): British Aerospace 146-300A · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Jul 21, 1993 · N611AW · Minor damage
  > was a crack in the fuel system fuel flow distribution manifold which resulted from an inadequate design by the manufacturer.
- [NTSB FTW93LA262](https://openairdocs.org/ntsb/FTW93LA262.md): Zbacnick Challenger II · Alamogordo, NM · Accident · No injuries · Limited investigation · Final report · Jul 18, 1993 · N851BZ · Substantial damage
  > The seizure of the propeller shaft bearing and the resultant propeller blade separation. Factors were the unfavorable winds and the lack of suitable terrain available for the forced landing.
- [NTSB DEN93LA080](https://openairdocs.org/ntsb/DEN93LA080.md): Glasflugel Standard Libell · Boulder, CO · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 1993 · N4362 · Substantial damage
  > Improper rigging of the spoiler system by maintenance personnel, which caused an uncommanded spoiler deployment and prevented spoiler retraction by the pilot. A factor was unsuitable terrain for a forced landing
- [NTSB DEN93LA079](https://openairdocs.org/ntsb/DEN93LA079.md): Piper PA-11 · Burkburnett, TX · Accident · Minor injuries · Limited investigation · Final report · Jul 15, 1993 · N4834M · Substantial damage
  > The disconnection of the up elevator cable from the control horn. A factor was the incorrect installation of the bolt and castle nut by unknown maintenance personnel.
- [NTSB DEN93LA076](https://openairdocs.org/ntsb/DEN93LA076.md): Grumman G-164A · Kaplan, LA · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 1993 · N9680 · Substantial damage
  > Failure of the spray rig which sprayed chemicals into the pilot's eyes temporarily blinding him.
- [NTSB MIA93LA152](https://openairdocs.org/ntsb/MIA93LA152.md): Piper PA-31 · Atlantic Ocean (Atlantic Ocean) · Accident · Minor injuries · Limited investigation · Final report · Jul 10, 1993 · N36L · Destroyed
  > Total loss of engine power from both engines due to fuel exhaustion after the pilot became lost/disoriented. Contributing to the accident was the delay by the pilot-in-command to execute the emergency procedure by resetting the alternators and voltage…
- [NTSB CHI93IA248](https://openairdocs.org/ntsb/CHI93IA248.md): Mcdonnell Douglas DC-10-40 · Detroit, MI · Incident · No injuries · Incident investigation · Final report · Jul 10, 1993 · N158US · No damage
  > the failure of a navigation system (#1 INS) for reason or reasons undetermined.
- [NTSB DEN93LA074](https://openairdocs.org/ntsb/DEN93LA074.md): Piper PA-24-260 · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Jul 8, 1993 · N8967P · Substantial damage
  > Failure of the pilot in command to follow manual gear extension procedures. A factor was a total electrical failure.

Next page: https://openairdocs.org/ntsb.md?occurrence=130&page=39

## 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=38

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