# NTSB investigations, 2012: 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 CEN13LA103](https://openairdocs.org/ntsb/CEN13LA103.md): Auman JL T-51 · Dekalb, IL · Accident · Serious injuries · Limited investigation · Final report · Dec 11, 2012 · N512JA · Substantial damage
  > The improper engine overhaul by the airplane kit manufacturer, which resulted in a catastrophic engine failure.
- [NTSB CEN13FA075](https://openairdocs.org/ntsb/CEN13FA075.md): Hughes 369 · Childress, TX · Accident · 1 fatal · Field investigation · Final report · Nov 27, 2012 · N28MP · Substantial damage
  > The improper maintenance of the helicopter fuel system that resulted in erroneous fuel gauge indications and the pilot’s inadequate fuel management, both of which resulted in fuel exhaustion during a long-line hover. Also causal was the lack of company…
- [NTSB ERA13LA065](https://openairdocs.org/ntsb/ERA13LA065.md): Beech C90A · Roanoke, VA · Accident · No injuries · Limited investigation · Final report · Nov 20, 2012 · N702DK · Substantial damage
  > The failure of the right main landing gear bearing actuator support brackets. Contributing to the accident was the owner's and operator's failure to comply with the airplane manufacturer's mandatory service bulletin and the Federal Aviation Administration's…
- [NTSB WPR13LA043](https://openairdocs.org/ntsb/WPR13LA043.md): Cirrus SR22 · Show Low, AZ · Accident · Minor injuries · Limited investigation · Final report · Nov 16, 2012 · N800RW · Substantial damage
  > The fatigue failure of an improperly installed nipple in the oil system of a supplemental type certificate-installed supercharger, which resulted in a complete loss of engine oil during cruise climb.
- [NTSB CEN13IA059](https://openairdocs.org/ntsb/CEN13IA059.md): Fairchild SA227-AC · Minneapolis, MN · Incident · No injuries · Incident investigation · Final report · Nov 10, 2012 · N619BA · Minor damage
  > Loose electrical connections to the hydraulic system and anomalies in the hydraulic shuttle valve and power pack, which resulted in an uncommanded gear unlock and collapse of the left main landing gear. Contributing to the accident was the operator’s failure…
- [NTSB CEN13LA056](https://openairdocs.org/ntsb/CEN13LA056.md): Cessna 210L · La Grange, TX · Accident · Minor injuries · Limited investigation · Final report · Nov 9, 2012 · N732BL · Substantial damage
  > The total loss of engine power due to the loss of oil to the engine. Contributing to the accident was maintenance personnel’s improper installation of the engine oil filter adaptor, which resulted in the loss of oil to the engine.
- [NTSB ERA13LA048](https://openairdocs.org/ntsb/ERA13LA048.md): Cirrus Design SR22 · Pahokee, FL · Accident · No injuries · Limited investigation · Final report · Oct 21, 2012 · N6839R · Substantial damage
  > A main landing gear wheel fire for reasons that could not be determined because postaccident examinations did not reveal any anomalies that would have precluded normal operations.
- [NTSB ERA13IA036](https://openairdocs.org/ntsb/ERA13IA036.md): Cessna 560XL · Nantucket, MA · Incident · No injuries · Incident investigation · Final report · Oct 19, 2012 · N576QS · Minor damage
  > The incorrect installation of the left main gear aft trunnion pivot pin by maintenance personnel, which resulted in separation of the aft portion of the left main gear trunnion from the aft trunnion fitting and minor damage to the airplane.
- [NTSB WPR12CA401](https://openairdocs.org/ntsb/WPR12CA401.md): Piper PA-22-108 · Lewiston, ID · Accident · No injuries · Data collection · Final report · Sep 4, 2012 · N4798Z · Substantial damage
  > The pilot’s inadequate postmaintenance and preflight inspections, which resulted in the separation of the left main wheel after takeoff. Contributing to the accident was the improperly secured left main wheel spindle nut.
- [NTSB ERA12LA524](https://openairdocs.org/ntsb/ERA12LA524.md): Piper PA-32R-301T · Riverview, FL · Accident · No injuries · Limited investigation · Final report · Aug 23, 2012 · N362DM · Substantial damage
  > Damage to the propeller governor gasket during installation by unknown persons, which resulted in a total loss of engine oil in flight and a subsequent forced landing.
- [NTSB ERA12FA514](https://openairdocs.org/ntsb/ERA12FA514.md): Socata TB 10 · Shirley, NY · Accident · 2 fatal · Field investigation · Final report · Aug 19, 2012 · N5542Z · Substantial damage
  > The pilot/owner's operation of the airplane with known deficiencies, and the mechanic's failure to reattach the mixture control cable to the mixture control arm following maintenance of the carburetor.
- [NTSB CEN12LA577](https://openairdocs.org/ntsb/CEN12LA577.md): Jones Kitfox III · Rockford, IL · Accident · No injuries · Limited investigation · Final report · Aug 19, 2012 · N942EJ · Substantial damage
  > The pilot's improper installation of a spark plug, which led to a partial loss of engine power after takeoff and the resultant forced landing.
- [NTSB CEN12LA558](https://openairdocs.org/ntsb/CEN12LA558.md): Beech A36 · Ruleton, KS · Accident · No injuries · Limited investigation · Final report · Aug 17, 2012 · N262EA · Substantial damage
  > The improper installation of the wastegate controller O-ring, which resulted in a partial loss of engine power.
- [NTSB CEN12LA530](https://openairdocs.org/ntsb/CEN12LA530.md): Williams John T-51 Mustang · Oshkosh, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 7, 2012 · N151TA · Substantial damage
  > The separation of an engine cooling hose from the radiator.
- [NTSB ERA12LA494](https://openairdocs.org/ntsb/ERA12LA494.md): Piper PA-44-180 · Titusville, FL · Accident · No injuries · Limited investigation · Final report · Aug 1, 2012 · N740FT · Substantial damage
  > Inadequate maintenance servicing and inspection of the nose landing gear, which resulted in the failure of the nose landing gear to lock and its subsequent collapse during landing.
- [NTSB CEN12LA513](https://openairdocs.org/ntsb/CEN12LA513.md): Grumman Acft ENG Cor G-164A · La Salle, CO · Accident · Minor injuries · Limited investigation · Final report · Aug 1, 2012 · N9822 · Substantial damage
  > The loss of engine power due to the detached distributor rotor.
- [NTSB ERA12LA469](https://openairdocs.org/ntsb/ERA12LA469.md): Piper PA-28-180 · Statesboro, GA · Accident · Minor injuries · Limited investigation · Final report · Jul 20, 2012 · N3692R · Substantial damage
  > A total loss of engine power as a result of oil exhaustion due to the mechanic's failure to apply appropriate torque to the oil filter.
- [NTSB ERA12LA441](https://openairdocs.org/ntsb/ERA12LA441.md): Piper PA-46-350P · Auburn, AL · Accident · No injuries · Limited investigation · Final report · Jul 6, 2012 · N4133G · Substantial damage
  > The airplane owner’s failure to have maintenance personnel comply with an aircraft manufacturer's service bulletin to require engine mount inspections for fatigue cracks, which resulted in an undetected fatigue crack, the engine mount failing, and the nose…
- [NTSB CEN12FA425](https://openairdocs.org/ntsb/CEN12FA425.md): Piper PA-28RT-201 · Mesquite, TX · Accident · Minor injuries · Field investigation · Final report · Jul 5, 2012 · N8308Y · Substantial damage
  > The failure of the right landing gear to fully extend, due to a combination of corrosion, inadequate lubrication, and a misadjusted gear-down limit switch. Contributing to the accident was the pilot's failure to perform the emergency landing gear extension…
- [NTSB ERA12LA422](https://openairdocs.org/ntsb/ERA12LA422.md): Mooney M20J · Mc Kinnon, TN · Accident · Serious injuries · Limited investigation · Final report · Jun 28, 2012 · N174JB · Substantial damage
  > The separation of the piston connecting rod from the crankshaft due to inadequate installation from a mechanic, resulting in a total loss of engine power.
- [NTSB ERA12FA395](https://openairdocs.org/ntsb/ERA12FA395.md): Remos Acft Gmbh Flugzeugbau Remos GX · Westminster, MD · Accident · 1 fatal · Field investigation · Final report · Jun 15, 2012 · N206GX · Substantial damage
  > The pilot's inadequate preflight inspection, which failed to ensure that the elevator quick-fastener was properly secured, resulting in an inflight elevator control disconnect and subsequent loss of control during the ensuing emergency landing. Contributing…
- [NTSB WPR12CA257](https://openairdocs.org/ntsb/WPR12CA257.md): Cessna 182A · Colfax, WA · Accident · No injuries · Data collection · Final report · Jun 11, 2012 · N4715D · Substantial damage
  > The total loss of engine power during cruise flight due to the missing carburetor drain plug, which had not been secured with safety wire.
- [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 CEN12LA343](https://openairdocs.org/ntsb/CEN12LA343.md): Schweizer 269C · Denver, CO · Accident · No injuries · Limited investigation · Final report · Jun 2, 2012 · N2196F · Substantial damage
  > The inadequately overhauled landing gear dampers that allowed initiation of a ground resonance event from which the pilot was unable to recover. Contributing to the accident was the overhaul facility's failure to identify the overcharged dampers and a lack of…
- [NTSB ERA12LA373](https://openairdocs.org/ntsb/ERA12LA373.md): Faltin John R Rotorway Exec 162F · Smoketown, PA · Accident · Minor injuries · Limited investigation · Final report · May 31, 2012 · N8707E · Substantial damage
  > A loss of control during a post-maintenance test flight due to improper tracking of the helicopter’s main rotor blades by the pilot/aircraft builder.
- [NTSB ERA12LA366](https://openairdocs.org/ntsb/ERA12LA366.md): Bell 206B · Longboat Key, FL · Accident · No injuries · Limited investigation · Final report · May 25, 2012 · N806LA · Substantial damage
  > Unknown personnel's failure to comply with the engine manufacturer's engine fuel pump replacement guidance, which resulted in a total loss of engine power due to the engine fuel pump failure.
- [NTSB WPR12IA248](https://openairdocs.org/ntsb/WPR12IA248.md): Eurocopter AS 350 B2 · Seattle, WA · Incident · No injuries · Incident investigation · Final report · May 22, 2012 · N105TV · Minor damage
  > Failure of maintenance personnel to ensure that the tail rotor pitch change link bolt was properly secured, which resulted in an in-flight separation of the bolt and subsequent vibration.
- [NTSB DCA12FA076](https://openairdocs.org/ntsb/DCA12FA076.md): Hawker Hawker Hunter MK.58A · Point Mugu, CA · Accident · 1 fatal · Field investigation · Final report · May 18, 2012 · N329AX · Destroyed
  > the pilot's decision to continue the flight with a known fuel imbalance condition that resulted in a loss of lateral control when the imbalance exceeded the known capabilities of the airplane. The fuel imbalance was due to incomplete refueling and an…
- [NTSB CEN12LA299](https://openairdocs.org/ntsb/CEN12LA299.md): Piper PA-24-250 · Shawnee, OK · Accident · No injuries · Limited investigation · Final report · May 14, 2012 · N7171P · Substantial damage
  > The improper installation of the mixture cable by maintenance personnel, which allowed the mixture cable to entangle with the landing gear during gear extension and led to the subsequent loss of engine power.
- [NTSB WPR12LA200](https://openairdocs.org/ntsb/WPR12LA200.md): Champion 7GC · Rexburg, ID · Accident · No injuries · Limited investigation · Final report · May 12, 2012 · N4861E · Substantial damage
  > A decrease in indicated oil pressure while maneuvering at low altitude for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation. Also causal was the pilot’s failure to…
- [NTSB CEN12LA253](https://openairdocs.org/ntsb/CEN12LA253.md): Bumford-Royer Christen Eagle II · Pearland, TX · Accident · Serious injuries · Limited investigation · Final report · Apr 22, 2012 · N80BH · Substantial damage
  > A loose B nut on the fuel inlet line due to maintenance personnel’s application of insufficient torque on the nut at an unknown time, which resulted in a fuel leak and a subsequent total loss of engine power during initial climb.
- [NTSB ERA12FA280](https://openairdocs.org/ntsb/ERA12FA280.md): Manzitto Michael A Mwlancair 235 · Hudson, KY · Accident · 1 fatal · Field investigation · Final report · Apr 14, 2012 · N235MW · Substantial damage
  > The pilot's decision to operate the airplane with known electrical system problems, which resulted in the in-flight failure of the electrical wiring interconnect system, loss of electrical power, and subsequent fuel starvation and loss of engine power.
- [NTSB ERA12CA278](https://openairdocs.org/ntsb/ERA12CA278.md): Piper PA-18A · West Palm Beach, FL · Accident · Minor injuries · Data collection · Final report · Apr 12, 2012 · N12003 · Substantial damage
  > The inadequate assembly of the brakes, which caused them to lock during the landing roll when the airplane transitioned from asphalt to turf, resulting in the airplane nosing over.
- [NTSB ERA12LA267](https://openairdocs.org/ntsb/ERA12LA267.md): Piper PA-28R-200 · Eastover, SC · Accident · No injuries · Limited investigation · Final report · Apr 3, 2012 · N961JD · Substantial damage
  > Inadequate or loss of through bolt preload tension, which resulted in fretting between the engine halves, the subsequent failure of one cylinder through bolt, the loosening of additional cylinder retaining studs, and the fracture of the crankcase.…
- [NTSB CEN12LA220](https://openairdocs.org/ntsb/CEN12LA220.md): Cirrus Design SR22T · Addison, TX · Accident · No injuries · Limited investigation · Final report · Mar 23, 2012 · N229TX · Substantial damage
  > Maintenance personnel’s improper maintenance, which resulted in the incorrect wiring of the No. 1 alternator and a subsequent electrical system fire during taxi. Contributing to the accident was the airplane manufacturer's inadequate maintenance documentation…
- [NTSB ERA12LA234](https://openairdocs.org/ntsb/ERA12LA234.md): Cessna 172K · Pensacola, FL · Accident · No injuries · Limited investigation · Final report · Mar 16, 2012 · N79509 · Substantial damage
  > A total loss of engine power due to the improper installation of the crankshaft gear bolt or lockplate by maintenance personnel. Contributing to the accident was the lack of suitable terrain for a forced landing.
- [NTSB ERA12LA219](https://openairdocs.org/ntsb/ERA12LA219.md): Cirrus Design SR22 · Homestead, FL · Accident · No injuries · Limited investigation · Final report · Mar 9, 2012 · N444VR · Substantial damage
  > The inadequate servicing and maintenance of the engine and the airplane owner and maintenance personnel's disregard of the manufacturer's recommended engine overhaul schedule and service bulletins, which resulted in an in-flight internal failure and seizure…
- [NTSB ERA12LA141](https://openairdocs.org/ntsb/ERA12LA141.md): Bowers Fly Baby 1-A · Jefferson, GA · Accident · 1 fatal · Limited investigation · Final report · Jan 8, 2012 · N4626 · Destroyed
  > The pilot’s failure to maintain airplane control which resulted in an aerodynamic stall and spin. Also causal was the partial loss of engine power during the initial climb due to the improper installation of a magneto. Contributing to the accident was the…
- [NTSB CEN12LA120](https://openairdocs.org/ntsb/CEN12LA120.md): Continental Copters 47G2 · Lohn, TX · Accident · Serious injuries · Limited investigation · Final report · Jan 1, 2012 · N9021R · Substantial damage
  > The improper installation of the tail rotor gearbox by maintenance personnel, which led to accelerated wear of the ring and pinion gears, resulting in the loss of tail rotor effectiveness and subsequent forced landing.

## 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 year(c."eventDate") = 2012
  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?year=2012

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