# NTSB investigations, MI: 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.

## Latest cases

- [NTSB CEN23LA363](https://openairdocs.org/ntsb/CEN23LA363.md): Beech C-99 · Lansing, MI · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 15, 2023 · N261SW · Substantial damage
  > The pilot’s failure to properly set the rudder trim position which resulted in a loss of directional control during takeoff. Contributing was the pilot’s inadequate checklist procedures prior to takeoff.
- [NTSB CEN23LA165](https://openairdocs.org/ntsb/CEN23LA165.md): Pipistrel Lsa Sinus · Kingsford, MI · Accident · No injuries · Class 3 · Limited · Final report · Apr 13, 2023 · N413EK · Substantial damage
  > The failure of maintenance personnel to properly secure the left carburetor bowl cover, which resulted in an engine fire before takeoff.
- [NTSB CEN21LA048](https://openairdocs.org/ntsb/CEN21LA048.md): Piper PA-28-140 · Greenville, MI · Accident · No injuries · Class 3 · Limited · Final report · Nov 7, 2020 · N9993W · Substantial damage
  > The loss of engine power due to fuel starvation during a low approach over the airport, which resulted in a forced landing and impact with terrain.
- [NTSB CEN20LA377](https://openairdocs.org/ntsb/CEN20LA377.md): Stinson 108-3 · Coleman, MI · Accident · No injuries · Class 3 · Limited · Final report · Sep 1, 2020 · N909C · Substantial damage
  > The pilot’s improper installation of the generator drive gear, which resulted in a total loss of engine power.
- [NTSB CEN19LA066](https://openairdocs.org/ntsb/CEN19LA066.md): Piper PA-32R-300 · Adrian, MI · Accident · Minor injuries · Limited investigation · Final report · Jan 13, 2019 · N8892E · Substantial damage
  > The airframe and powerplant mechanic's lack of experience in the overhaul of the engine model and the improper torque of the crankshaft gear bolt, which resulted in fatigue failure of the bolt and a total loss of engine power during an approach for landing.
- [NTSB CEN17LA178](https://openairdocs.org/ntsb/CEN17LA178.md): Cessna 182G · Manistee, MI · Accident · Minor injuries · Limited investigation · Final report · Apr 23, 2017 · N2056R · Substantial damage
  > The failure of the airplane owner and maintenance personnel to follow the propeller manufacturer's recommend overhaul schedule, which resulted in a fatigue fracture of the propeller blade actuating pin and a loss of thrust in flight.
- [NTSB CEN17LA150](https://openairdocs.org/ntsb/CEN17LA150.md): Piper PA 28R-201 · Pontiac, MI · Accident · No injuries · Limited investigation · Final report · Apr 9, 2017 · N36458 · Substantial damage
  > Maintenance personnel’s improper securing of an unused instrument lamp socket during recent maintenance, which resulted in an electrical short of the landing gear controls and stopped the landing gear while it was transitioning to the down position and led to…
- [NTSB CEN17LA070](https://openairdocs.org/ntsb/CEN17LA070.md): Aeronca 15AC · Pontiac, MI · Accident · No injuries · Limited investigation · Final report · Dec 23, 2016 · N1337H · Substantial damage
  > The improper installation of the left wheel brake torque plate by maintenance personnel, which resulted in the separation of the torque plate from the axle endplate and a loss of directional control during landing.
- [NTSB CEN17LA057](https://openairdocs.org/ntsb/CEN17LA057.md): Stinson 108-3 · Ionia, MI · Accident · No injuries · Limited investigation · Final report · Dec 16, 2016 · N812C · Substantial damage
  > A failure of the aft support cable on the left main landing ski due to an inadequately formed nicopress sleeve, which allowed the ski to rotate into a vertical position shortly after liftoff, and its unavoidable separation during the subsequent landing.
- [NTSB CEN16LA363](https://openairdocs.org/ntsb/CEN16LA363.md): CGS Hawk Aero II · Holland, MI · Accident · Serious injuries · Limited investigation · Final report · Sep 3, 2016 · N4513S · Destroyed
  > The improper installation of quick release connectors in the fuel lines, which was not in accordance with the engine manufacturer's maintenance instructions and allowed air to be introduced into the fuel system and resulted in a partial loss of engine power.…
- [NTSB CEN16LA035](https://openairdocs.org/ntsb/CEN16LA035.md): Glimn Kitfox 2-3 · Escanaba, MI · Accident · Minor injuries · Limited investigation · Final report · Nov 3, 2015 · N93TG · Substantial damage
  > The airplane owner's inadequate maintenance and servicing of the propeller gearbox, which resulted in oil starvation, failure of the gearbox in flight, and a subsequent loss of propeller thrust. Contributing to the outcome was the airplane's low altitude at…
- [NTSB CEN15LA421](https://openairdocs.org/ntsb/CEN15LA421.md): Lerch RV6A · Deckerville, MI · Accident · Serious injuries · Limited investigation · Final report · Sep 22, 2015 · N215DG · Substantial damage
  > The in-flight loss of engine oil after the oil filter separated from the engine adapter assembly because of an incorrect modification of the oil filter adapter assembly, which resulted in a precautionary landing in a field.
- [NTSB GAA15CA143](https://openairdocs.org/ntsb/GAA15CA143.md): Aventura II · Fenton, MI · Accident · No injuries · Data collection · Final report · Jul 17, 2015 · N1204A · Substantial damage
  > The failure of the student pilot to ensure that the experimental seaplane was airworthy prior to take off.
- [NTSB CEN13LA232](https://openairdocs.org/ntsb/CEN13LA232.md): Cessna 172G · Reading, MI · Accident · No injuries · Limited investigation · Final report · Apr 20, 2013 · N3682L · Substantial damage
  > The partial loss of engine power due to the improper securing of the throttle linkage by maintenance personnel.
- [NTSB CEN12LA348](https://openairdocs.org/ntsb/CEN12LA348.md): Piper PA-22-135 · Bangor, MI · Accident · Serious injuries · Limited investigation · Final report · Jun 6, 2012 · N3431A · Substantial damage
  > The pilot’s failure to properly service the fuel system, and subsequent decision to conduct the flight with known fuel system deficiencies, which led to the total loss of engine power.
- [NTSB CEN11LA182](https://openairdocs.org/ntsb/CEN11LA182.md): Cessna 150L · Trenton, MI · Accident · No injuries · Limited investigation · Final report · Feb 12, 2011 · N6622G · Substantial damage
  > The loss of preload torque on a connecting rod nut and bolt, which precipitated a separation of the connecting rod from the engine's crankshaft and resulted in the total loss of engine power.
- [NTSB CEN09CA338](https://openairdocs.org/ntsb/CEN09CA338.md): Garrett Rans S-6ES · Williamsburg, MI · Accident · Minor injuries · Data collection · Final report · Jun 5, 2009 · N213KT · Substantial damage
  > The pilot/builder's improper installation of the fuel line cable-tie, which resulted in fuel starvation and the loss of engine power.
- [NTSB CHI08LA160](https://openairdocs.org/ntsb/CHI08LA160.md): Piper PA-44-180 · Battle Creek, MI · Accident · No injuries · Limited investigation · Final report · Jun 8, 2008 · N159WM · Substantial damage
  > The in-flight separation of the tip of a propeller blade due to metal fatigue that resulted from an inadequate inspection and repair.

## 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."eventStateOrRegion" = 'MI' AND c."eventCountry" = 'USA'
  AND 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?state=MI

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