# NTSB investigations: Aircraft maintenance event

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 6 of 10 · 484 cases

## Cases, newest first

- [NTSB GAA15CA125](https://openairdocs.org/ntsb/GAA15CA125.md): Cessna 180B · Waterloo, IA · Accident · No injuries · Data collection · Final report · Jun 6, 2015 · N5067E · Substantial damage
  > The incorrect installation of the secondary seat stop reel which resulted in the pilot's loss of control when the seat moved full aft during takeoff.
- [NTSB WPR15FA158](https://openairdocs.org/ntsb/WPR15FA158.md): Piper PA 46 350P · Spokane, WA · Accident · 2 fatal · Field investigation · Final report · May 7, 2015 · N962DA · Destroyed
  > The mechanic's incorrect installation of two aileron cables and the subsequent inadequate functional checks of the aileron system before flight by both the mechanic and the pilot, which prevented proper roll control from the cockpit, resulting in the pilot's…
- [NTSB ERA15IA198](https://openairdocs.org/ntsb/ERA15IA198.md): Dassault-Breguet Mystere Falcon 900 · Orlando, FL · Incident · No injuries · Class 2 · Incident · Final report · Apr 16, 2015 · N610RL · Minor damage
  > Unknown maintenance personnel’s inadequate securing of a wiring bundle during a maintenance, repair, or modification event, which led to chafing of the wiring bundle, an electrical short and arcing, and a subsequent in-flight fire.
- [NTSB GAA15CA022](https://openairdocs.org/ntsb/GAA15CA022.md): Beech A36 · New Market, IN · Accident · No injuries · Data collection · Final report · Mar 17, 2015 · N900TM · Substantial damage
  > The pilot's improper fuel planning, which resulted in fuel exhaustion, and a loss of engine power en-route.
- [NTSB WPR15LA109](https://openairdocs.org/ntsb/WPR15LA109.md): Bell/Garlick UH 1H · Shelton, WA · Accident · No injuries · Limited investigation · Final report · Feb 19, 2015 · N166DR · Substantial damage
  > The fatigue failure of the engine-to-transmission driveshaft adapter attachment bolt due to the application of inadequate torque on the bolt during assembly.
- [NTSB ERA15LA133](https://openairdocs.org/ntsb/ERA15LA133.md): Johnson Joel H Rans S-6ES Coyote II · Rincon, PR · Accident · 1 fatal · Limited investigation · Final report · Feb 19, 2015 · N5196W · Substantial damage
  > The inadequate maintenance and inspection of the fuel system, which resulted in partial blockage of a fuel filter, a partial loss of engine power, and subsequent ditching.
- [NTSB ERA15FA128](https://openairdocs.org/ntsb/ERA15FA128.md): Piper PA28 · Greensboro, NC · Accident · 1 fatal · Field investigation · Final report · Feb 11, 2015 · N5985U · Substantial damage
  > A total loss of engine power after takeoff due to fuel starvation as a result of excessive wear of the fuel selector valve. Also causal was the owner/operator and maintenance personnel's inadequate maintenance, and inadequate postmaintenance inspection.
- [NTSB ERA15LA123](https://openairdocs.org/ntsb/ERA15LA123.md): American AA-1 · Fort Meade, MD · Accident · Serious injuries · Limited investigation · Final report · Feb 8, 2015 · N6116L · Substantial damage
  > The mechanic’s failure to detect the incorrect dry valve tappet clearances while troubleshooting ongoing engine issues, which resulted in partial loss of engine power during takeoff. Contributing to the partial loss of engine power was the mechanic's failure…
- [NTSB CEN15LA138](https://openairdocs.org/ntsb/CEN15LA138.md): Air Tractor AT 602 · Slaton, TX · Accident · No injuries · Limited investigation · Final report · Feb 5, 2015 · N602PB · Substantial damage
  > Maintenance personnel’s improper installation of the engine data monitor (EDM), which was not in accordance with the supplemental type certificate instructions and resulted in engine warning indications and the pilot’s subsequent reaction to the warning…
- [NTSB ERA15CA107](https://openairdocs.org/ntsb/ERA15CA107.md): Piper PA-28-161 · Alexander City, AL · Accident · Minor injuries · Data collection · Final report · Jan 19, 2015 · N104SA · Substantial damage
  > The pilot's failure to properly secure the airplane before hand-propping the engine for startup.
- [NTSB CEN15IA076](https://openairdocs.org/ntsb/CEN15IA076.md): Cessna 182S · Springfield, IL · Incident · No injuries · Incident investigation · Final report · Dec 10, 2014 · N661SP · Minor damage
  > The improper installation of a doubler patch, which prevented the right flap from actuating and moving properly and led to the subsequent interference with the aileron.
- [NTSB ERA15IA024](https://openairdocs.org/ntsb/ERA15IA024.md): Cirrus Design SR22 · Lexington, NC · Incident · No injuries · Incident investigation · Final report · Oct 22, 2014 · N242MB · Minor damage
  > Maintenance personnel's improper tightening of the crankcase through bolt nuts during reassembly of the engine at the last overhaul, which resulted in the failure of the crankshaft and the subsequent total loss of engine power.
- [NTSB ERA15LA014](https://openairdocs.org/ntsb/ERA15LA014.md): Cessna 180K · Boca Raton, FL · Accident · Minor injuries · Limited investigation · Final report · Oct 12, 2014 · N2590K · Substantial damage
  > Maintenance personnel’s failure to apply proper torque to the cylinder flange nuts and through bolts, which resulted in shifting of the Nos. 1 and 2 main bearings, loss of lubrication, failure of the crankshaft, and a subsequent total loss of engine power.
- [NTSB ERA15IA008](https://openairdocs.org/ntsb/ERA15IA008.md): Cessna S550 · Tampa, FL · Incident · No injuries · Incident investigation · Final report · Oct 4, 2014 · N550AJ · No damage
  > The lack of flat roller bearings in the two elevator trim tab actuators and maintenance personnel’s inadequate lubrication of the left elevator trim tab actuator, both of which resulted in the overstress fracture of the left internal screw and subsequent…
- [NTSB ERA14FA461](https://openairdocs.org/ntsb/ERA14FA461.md): Eagle R&D Helicycle · Gallatin, TN · Accident · 1 fatal · Field investigation · Final report · Sep 28, 2014 · N7062U · Substantial damage
  > The pilot's decision to fly the improperly balanced helicopter at high speed and low altitude, which resulted in a loss of control and collision with terrain. Contributing to the accident were the pilot's depression and resulting degradation of executive…
- [NTSB CEN14CA515](https://openairdocs.org/ntsb/CEN14CA515.md): Cessna 150J · Brookfield, WI · Accident · Minor injuries · Data collection · Final report · Sep 22, 2014 · N50889 · Substantial damage
  > The pilot's inadequate maintenance and preflight of the airplane which resulted in a total loss of engine power due to oil starvation.
- [NTSB CEN14LA486](https://openairdocs.org/ntsb/CEN14LA486.md): Cirrus Design SR22 · Langola Township, MN · Accident · No injuries · Limited investigation · Final report · Sep 7, 2014 · N22WX · Substantial damage
  > Maintenance personnel’s failure to apply sufficient torque on the throttle control lever nut, which resulted in a loss of throttle control and subsequent loss of engine power.
- [NTSB ERA14LA422](https://openairdocs.org/ntsb/ERA14LA422.md): Ackland Jeffrey Dean SH 3R · Columbus, GA · Accident · No injuries · Limited investigation · Final report · Sep 3, 2014 · N333AW · Substantial damage
  > The mechanic’s improper installation of the landing gear extend/retract switch, which resulted in the retraction of the landing gear during the aborted takeoff.
- [NTSB ERA14FA421](https://openairdocs.org/ntsb/ERA14FA421.md): Klaas Development Lancair IV P · Ooltewah, TN · Accident · 1 fatal · Field investigation · Final report · Sep 3, 2014 · N541EM · Substantial damage
  > The inadequate torque of the propeller mounting bolts and inspection of the propeller, which resulted in the fatigue fracture of the bolts and a subsequent in-flight separation of the propeller assembly.
- [NTSB CEN14LA357](https://openairdocs.org/ntsb/CEN14LA357.md): Cessna TR182 · Wichita, KS · Accident · No injuries · Limited investigation · Final report · Jul 7, 2014 · N4602S · Substantial damage
  > Maintenance personnel’s improper landing gear system repair, which resulted in a hydraulic leak and subsequent gear collapse during landing.
- [NTSB ANC14FA050](https://openairdocs.org/ntsb/ANC14FA050.md): Piper PA 12 · Anchorage, AK · Accident · 1 fatal · Field investigation · Final report · Jul 2, 2014 · N3512M · Substantial damage
  > The incorrect (reverse) rigging of the elevator control cables, and the pilot’s inadequate preflight inspection, which failed to detect the misrigging.
- [NTSB ERA14FA313](https://openairdocs.org/ntsb/ERA14FA313.md): Cessna 182 · Littleton, NC · Accident · 1 fatal · Field investigation · Final report · Jun 27, 2014 · N182PE · Substantial damage
  > Maintenance personnel's application of sealant to the engine case halves during engine overhaul, contrary to manufacturer's instructions, which resulted in internal failure of the engine due to the loss of case bolt torque.
- [NTSB WPR14LA225](https://openairdocs.org/ntsb/WPR14LA225.md): Emery Mark Rotorway 162F · Merced, CA · Accident · No injuries · Limited investigation · Final report · Jun 4, 2014 · N78291 · Destroyed
  > The helicopter pilot/owner's decision to install a belt type not recommended by the kit manufacturer in the tail rotor drive system using the incorrect tension values, which led to the belt’s in-flight failure and the subsequent loss of tail rotor drive…
- [NTSB ERA14LA272](https://openairdocs.org/ntsb/ERA14LA272.md): Landrum Kelly T Vans RV6 · Suffolk, VA · Accident · Minor injuries · Limited investigation · Final report · May 31, 2014 · N6RP · Substantial damage
  > The pilot/builder's decision to use a lubricant that was not designed for high-speed aviation applications, which resulted in the failure of the propeller needle thrust bearing due to the loss of lubrication from overheating, a total loss of aerodynamic…
- [NTSB ANC14LA035](https://openairdocs.org/ntsb/ANC14LA035.md): Dehavilland DHC-3T · Homer, AK · Accident · No injuries · Limited investigation · Final report · May 30, 2014 · N3125N · Substantial damage
  > The flutter failure of the right elevator servo tab due to the improper fabrication of the servo tab and maintenance personnel’s subsequent failure to detect anomalies with the servo tab.
- [NTSB CEN14CA310](https://openairdocs.org/ntsb/CEN14CA310.md): Cessna 421A · Dallas, TX · Accident · No injuries · Data collection · Final report · May 24, 2014 · N936U · Substantial damage
  > The improper rigging of the landing gear by maintenance personnel, which resulted in the landing gear collapse.
- [NTSB ERA14LA223](https://openairdocs.org/ntsb/ERA14LA223.md): Messerschmitt-Bolkow-Blohm BK 117 · Hamburg, NY · Accident · No injuries · Limited investigation · Final report · May 4, 2014 · N504TJ · Substantial damage
  > Wear in the left cabin door assembly parts, which resulted in the door partially opening in flight, dislodging from the lower door track assembly, and then separating from the helicopter.
- [NTSB ERA14FA168](https://openairdocs.org/ntsb/ERA14FA168.md): Piper PA-44-180 · Brunswick, GA · Accident · 2 fatal · Field investigation · Final report · Mar 24, 2014 · N923RS · Destroyed
  > An inflight failure of the airplane's only operating vacuum pump, which resulted in the loss of attitude information provided by vacuum-driven flight instruments. Also causal was the pilots' failure to maintain control of the airplane while operating in…
- [NTSB ERA14LA170](https://openairdocs.org/ntsb/ERA14LA170.md): Cessna 421 · Charleston, SC · Accident · No injuries · Limited investigation · Final report · Mar 20, 2014 · N5929M · Substantial damage
  > Inadequate maintenance, which resulted in the collapse of the right main landing gear during landing.
- [NTSB WPR14CA136](https://openairdocs.org/ntsb/WPR14CA136.md): Norman Quad City Challenger · Monroe, WA · Accident · No injuries · Data collection · Final report · Mar 13, 2014 · N345MN · Substantial damage
  > The pilot's inadequate construction of the propeller bracket, which resulted in its failure during the initial climb and the propeller subsequently departing the airplane.
- [NTSB CEN14LA159](https://openairdocs.org/ntsb/CEN14LA159.md): Cessna 310Q · Wapakoneta, OH · Accident · No injuries · Limited investigation · Final report · Mar 8, 2014 · N69980 · Substantial damage
  > A fire due to a fuel leak of the cabin heater system. Contributing to the accident was the inadequate maintenance of the airplane, which failed to identify leaks in the heater system.
- [NTSB ERA14LA142](https://openairdocs.org/ntsb/ERA14LA142.md): Cessna 172R · Jackson, TN · Accident · No injuries · Limited investigation · Final report · Mar 5, 2014 · N9417Z · Substantial damage
  > A total loss of engine power due to maintenance personnel’s improper installation of the lower vacuum pump.
- [NTSB ERA14LA130](https://openairdocs.org/ntsb/ERA14LA130.md): Victor M Cordero RV-9A · Apopka, FL · Accident · Serious injuries · Limited investigation · Final report · Feb 23, 2014 · N19VC · Substantial damage
  > The failure of the propeller spline shaft, the drive disk adapter, and the propeller speed reduction unit (PSRU) input spline due to a lack of inspection and lubrication, which resulted in a total loss of propeller drive and a subsequent forced landing.…
- [NTSB ERA14FA123](https://openairdocs.org/ntsb/ERA14FA123.md): Williams Christopher T Sonex · Wellington, FL · Accident · 1 fatal · Field investigation · Final report · Feb 17, 2014 · N732SX · Destroyed
  > The pilot's failure to maintain adequate airspeed following a partial loss of engine power during initial climb, which led to the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall. Contributing to the accident was the…
- [NTSB ERA14LA099](https://openairdocs.org/ntsb/ERA14LA099.md): Bell 47D1 · Pell City, AL · Accident · Minor injuries · Limited investigation · Final report · Jan 21, 2014 · N93067 · Substantial damage
  > The pilot’s use of an improper clutch engagement procedure, which resulted in clutch glazing, slippage, and, ultimately, the in-flight disengagement of the clutch and a loss of rotor rpm. Contributing to the accident were the installation of a light-weight…
- [NTSB CEN14LA081](https://openairdocs.org/ntsb/CEN14LA081.md): Rockwell International 112 · Hammond, LA · Accident · No injuries · Limited investigation · Final report · Dec 10, 2013 · N1203J · Substantial damage
  > The total loss of engine power due to oil starvation because of a fractured governor oil line, which resulted from the improper installation of the governor oil line assembly during the last oil line replacement.
- [NTSB WPR14LA062](https://openairdocs.org/ntsb/WPR14LA062.md): Hiller UH 12E · Chowchilla, CA · Accident · No injuries · Limited investigation · Final report · Dec 9, 2013 · N36MV · Substantial damage
  > The failure of the torsional drive coupling, which resulted in a loss of drive to the main rotor system during low-altitude flight.
- [NTSB ERA14FA049](https://openairdocs.org/ntsb/ERA14FA049.md): Piper PA-23-160 · Graniteville, SC · Accident · 1 fatal · Field investigation · Final report · Nov 25, 2013 · N4016P · Substantial damage
  > The pilot's improper maintenance of the airplane's fuel system, which resulted a loss of power in the left engine due to fuel starvation. Also causal was the pilot's failure to maintain minimum controllable airspeed following the loss of engine power, which…
- [NTSB WPR14LA055](https://openairdocs.org/ntsb/WPR14LA055.md): Richard S Duncan Avid Flyer · Lakeside, OR · Accident · Serious injuries · Limited investigation · Final report · Nov 17, 2013 · N1445P · Substantial damage
  > The pilot/owner’s failure to comply with the engine manufacturer’s maintenance guidance, which resulted in the total loss of engine power due to the fracture failure of the plastic drive gear for the engine lubricating oil pump.
- [NTSB ERA14LA042](https://openairdocs.org/ntsb/ERA14LA042.md): Piper PA28 · Homestead, FL · Accident · No injuries · Limited investigation · Final report · Nov 11, 2013 · N1830T · Substantial damage
  > A total loss of engine power due to the in-flight separation of the No. 3 cylinder because of the fatigue cracking of its respective mounting studs and through bolts, which resulted from inadequate maintenance by unknown personnel.
- [NTSB CEN14LA048](https://openairdocs.org/ntsb/CEN14LA048.md): Eurocopter Deutschland EC135P1 · Shreveport, LA · Accident · Minor injuries · Limited investigation · Final report · Nov 9, 2013 · N911KB · Substantial damage
  > The mechanic's improper installation of the antitorque pedals, which resulted in an in-flight loss of helicopter control.
- [NTSB ERA14LA015](https://openairdocs.org/ntsb/ERA14LA015.md): Piper PA-22-135 · Selinsgrove, PA · Accident · Serious injuries · Limited investigation · Final report · Oct 4, 2013 · N170JH · Substantial damage
  > The incorrect (reverse) rigging of the elevator cables by maintenance personnel and their subsequent failure to verify that the rigging was correct during postmaintenance checks and the pilot's inadequate preflight check.
- [NTSB WPR13FA417](https://openairdocs.org/ntsb/WPR13FA417.md): Bell UH-1V · Cordes Lakes, AZ · Accident · 2 fatal · Field investigation · Final report · Sep 21, 2013 · N22490 · Destroyed
  > The pilot's improper maintenance on the helicopter’s main rotor blade pitch control system, which resulted in an in-flight loss of main rotor blade pitch control, mast bumping, and mast failure.
- [NTSB ERA13LA421](https://openairdocs.org/ntsb/ERA13LA421.md): American Eurocopter AS350B2 · Canton, MS · Accident · Serious injuries · Limited investigation · Final report · Sep 20, 2013 · N810LE · Substantial damage
  > The pilot’s improper decision to continue flight with a low engine oil pressure warning light instead of landing immediately in accordance with the flight manual emergency checklist. Contributing to the accident was the maintenance technician’s failure to…
- [NTSB DCA13WA159](https://openairdocs.org/ntsb/DCA13WA159.md): Boeing 787 - 8QQ · Warsaw, Poland · Incident · No injuries · Foreign investigation · Sep 18, 2013 · SP-LRB · No damage
  > On September 18, 2013, a LOT Polish Airlines, Boeing 787-8, registration number SP-LRB, powered by two Rolls-Royce Trent 100-67B turbofan engines experienced a maintenance status message “ENG FUEL FULTER R” during cruise from Beijing Capital International…
- [NTSB ERA13LA407](https://openairdocs.org/ntsb/ERA13LA407.md): Piper PA-32R-300 · Guntersville, AL · Accident · Minor injuries · Limited investigation · Final report · Sep 8, 2013 · N8362C · Substantial damage
  > The improper installation of the engine magneto by unknown maintenance personnel, which resulted in the magneto separating from the engine and a subsequent total loss of engine power. Contributing to the accident was the pilot's delay in proceeding directly…
- [NTSB ERA13LA406](https://openairdocs.org/ntsb/ERA13LA406.md): Engineering & Research 415-D · Beaver Falls, PA · Accident · No injuries · Limited investigation · Final report · Sep 6, 2013 · N3940H · Substantial damage
  > The owner/pilot’s failure to follow engine manufacturer recommendations for engine oil changes and spark plug cleaning and rotating when operating the airplane with 100 low lead fuel, which resulted in carbon buildup in the engine and the total loss of engine…
- [NTSB ERA13LA410](https://openairdocs.org/ntsb/ERA13LA410.md): Cessna 188B · Woodrow, SC · Accident · Minor injuries · Limited investigation · Final report · Sep 4, 2013 · N59JK · Substantial damage
  > A failure of the right rudder pedal arm due to corrosion as a result of inadequate maintenance and inspection of the rudder pedal assembly.
- [NTSB ERA13IA396](https://openairdocs.org/ntsb/ERA13IA396.md): Piper PA-28RT-201 · Chesapeake, VA · Incident · No injuries · Incident investigation · Final report · Aug 31, 2013 · N2091W · No damage
  > Maintenance personnel’s inadequate inspection and compliance with a Federal Aviation Administration airworthiness directive, which resulted in an undetected corroded and cracked stabilator turnbuckle and the subsequent failure of the turnbuckle and loss of…
- [NTSB CEN13LA433](https://openairdocs.org/ntsb/CEN13LA433.md): Clayton Gerald H Glastar GS-1 · Columbus, IN · Accident · 1 fatal · Limited investigation · Final report · Jul 25, 2013 · N513GC · Destroyed
  > Slippage in the engine clutch and gear reduction module and a resultant uncommanded movement of the propeller blades into reverse thrust.

Next page: https://openairdocs.org/ntsb-events/040/sequence.md?page=7

## 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '040' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/040/sequence?page=6

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