# NTSB investigations, 2011: Sys/Comp malf/fail (non-power)

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 ENG12IA013](https://openairdocs.org/ntsb/ENG12IA013.md): Beech 1900D · Denver International Airport, CO · Incident · No injuries · Incident investigation · Final report · Dec 3, 2011 · N247GL · Minor damage
  > A failure of the nose landing gear end cap due to fatigue. Contributing to the failure were the ineffective inspection and the unknown effect of grain direction on fatigue life.
- [NTSB DCA12WA030](https://openairdocs.org/ntsb/DCA12WA030.md): Boeing 777 · Maldives, Maldives · Incident · No injuries · Foreign investigation · Dec 2, 2011 · A6-EMR · Minor damage
  > The UAE General Civil Aviation Authority (GCAA) has notified the NTSB of an incident involving a Boeing 777 that occurred on December 2, 2011. The NTSB has appointed a U.S. Accredited Representative to assist the GCAA investigation under the provisions of…
- [NTSB ANC12CA010](https://openairdocs.org/ntsb/ANC12CA010.md): Cessna A185F · Talkeetna, AK · Accident · No injuries · Data collection · Final report · Nov 23, 2011 · N121EE · Substantial damage
  > A broken wheel/ski clevis pin, which allowed the ski to pivot upward and strike the right wing lift strut.
- [NTSB WPR12LA039](https://openairdocs.org/ntsb/WPR12LA039.md): Williams Helicopter UH-1H · Grand Canyon, AZ · Accident · Serious injuries · Limited investigation · Final report · Nov 15, 2011 · N502AW · Substantial damage
  > The loss of main rotor power due to a main rotor transmission failure from a lack of lubrication.
- [NTSB ANC12TA008](https://openairdocs.org/ntsb/ANC12TA008.md): Bellanca 8GCBC · Delta Junction, AK · Accident · No injuries · Final report · Nov 11, 2011 · N88417 · Substantial damage
  > Ice accretion in the main landing gear wheel brakes, which prevented the main landing gear wheels from rotating on landing, which resulted in the airplane nosing over.
- [NTSB ERA12LA070](https://openairdocs.org/ntsb/ERA12LA070.md): Cessna 172RG · Kissimmee, FL · Accident · No injuries · Limited investigation · Final report · Nov 8, 2011 · N5095V · Substantial damage
  > A fatigue failure of the right main landing gear pivot assembly, which prevented the landing gear from extending.
- [NTSB CEN12RA052](https://openairdocs.org/ntsb/CEN12RA052.md): Bell 206L · Kapuskasing, Canada · Accident · 3 fatal · Class 5 · Foreign · Nov 2, 2011 · C-GDQH · Substantial damage
  > On November 2, 2011, about 0958 eastern daylight time (EDT), a Bell 206L helicopter, Canadian registration C-GDQH, was substantially damaged during an in-flight collision with terrain in Kapuskasing, Ontario, Canada. The pilot and 2 passengers sustained fatal…
- [NTSB CEN12LA023](https://openairdocs.org/ntsb/CEN12LA023.md): Piper PA-28-235 · Wadsworth, OH · Accident · No injuries · Limited investigation · Final report · Oct 8, 2011 · N9444W · Substantial damage
  > The failure of the brake system during the landing roll, which was caused by a loss of hydraulic fluid as a result of a leak in the piston seal due to brake plates worn beyond their service limits.
- [NTSB ERA11LA507](https://openairdocs.org/ntsb/ERA11LA507.md): Mitsubishi MU-2B-25 · Atlanta, GA · Accident · No injuries · Limited investigation · Final report · Sep 28, 2011 · N344KL · Substantial damage
  > The improper installation of the nose landing gear strut and subsequent collapse of the nose landing gear during landing.
- [NTSB CEN11IA649](https://openairdocs.org/ntsb/CEN11IA649.md): Airbus Industrie A320-211 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Sep 17, 2011 · C-FGYL · Minor damage
  > The infiltration of moisture into the windshield heating layer that induced arcing in the heating system that subsequently cracked the windshield.
- [NTSB ANC11CA095](https://openairdocs.org/ntsb/ANC11CA095.md): Cessna 170A · Anchorage, AK · Accident · No injuries · Data collection · Final report · Sep 5, 2011 · N5406C · Substantial damage
  > The fracture of a hydraulic brake line fitting due to incorrect installation of the brake line by the pilot/owner, which resulted in a loss of brake pressure and subsequent loss of directional control during the landing roll.
- [NTSB CEN11LA601](https://openairdocs.org/ntsb/CEN11LA601.md): Van's RV-12 · Windom, MN · Accident · Minor injuries · Limited investigation · Final report · Aug 29, 2011 · N73712 · Substantial damage
  > The pilot's loss of airplane control after liftoff due to his distraction with the unsecured canopy, which he did not lock before takeoff.
- [NTSB CEN11CA640](https://openairdocs.org/ntsb/CEN11CA640.md): Cessna T210M · Cahokia, IL · Accident · No injuries · Data collection · Final report · Aug 25, 2011 · N44HR · Substantial damage
  > A failure of a spring in the main landing gear actuation system that prevented the landing gear from extending.
- [NTSB ERA11CA471](https://openairdocs.org/ntsb/ERA11CA471.md): Payne/Foster Glasair · Ocala, FL · Accident · No injuries · Data collection · Final report · Aug 24, 2011 · N250CH · Substantial damage
  > The failure of the tailwheel locking mechanism to remain engaged while landing in a crosswind, which resulted in a loss of directional control and runway excursion.
- [NTSB WPR11CA358](https://openairdocs.org/ntsb/WPR11CA358.md): Mcdonald Lynn B Avid Flyer Mark IV · Yamhill, OR · Accident · No injuries · Data collection · Final report · Jul 31, 2011 · N30456 · Substantial damage
  > The pilot’s loss of directional control during landing rollout due to an unlocked tail wheel that was caused by a degradation of the tailwheel assembly mounting angle.
- [NTSB CEN11CA523](https://openairdocs.org/ntsb/CEN11CA523.md): Cessna 195 · Oshkosh, WI · Accident · No injuries · Data collection · Final report · Jul 28, 2011 · N195SM · Substantial damage
  > The failure of the left brake which resulted in a ground-loop.
- [NTSB ANC11CA072](https://openairdocs.org/ntsb/ANC11CA072.md): Aeronca 7AC · McCarthy, AK · Accident · No injuries · Data collection · Final report · Jul 24, 2011 · N85194 · Substantial damage
  > The separation of the right main landing gear oleo strut assembly, resulting in the collapse of the main landing gear during the landing roll.
- [NTSB ERA11CA396](https://openairdocs.org/ntsb/ERA11CA396.md): Piper PA-30 · Plant City, FL · Accident · No injuries · Data collection · Final report · Jul 10, 2011 · N325EE · Substantial damage
  > The failure of a screw in the nose landing gear aligner assembly for undetermined reasons, which prevented the landing gear from fully extending.
- [NTSB WPR11LA303](https://openairdocs.org/ntsb/WPR11LA303.md): Arrow Falcon Exporters OH-58C · Brentwood, CA · Accident · Serious injuries · Limited investigation · Final report · Jul 3, 2011 · N6264D · Substantial damage
  > The failure of the main rotor mast due to fatigue cracking originating from corrosion pits.
- [NTSB WPR11LA313](https://openairdocs.org/ntsb/WPR11LA313.md): Piper PA 46-350P · Flagstaff, AZ · Accident · No injuries · Limited investigation · Final report · Jun 26, 2011 · N9246M · Substantial damage
  > Fatigue failure of an engine mount attachment foot, which resulted in collapse of the nose landing gear during landing. Contributing to the accident was the failure of the owner/operator to adhere to the manufacturer's suggested engine mount inspection…
- [NTSB WPR11LA282](https://openairdocs.org/ntsb/WPR11LA282.md): Hiller UH12E · Hanford, CA · Accident · No injuries · Limited investigation · Final report · Jun 23, 2011 · N99579 · Substantial damage
  > The separation of the tail rotor drive gear shaft due to torsional fatigue of its threaded portion, which resulted in a loss of tail rotor control.
- [NTSB WPR11LA292](https://openairdocs.org/ntsb/WPR11LA292.md): Cessna 320F · Phoenix, AZ · Accident · No injuries · Limited investigation · Final report · Jun 21, 2011 · N6160Q · Substantial damage
  > The mechanic's failure to properly secure the nose landing gear actuator push-pull tube to the landing gear door hinge clevis, which resulted in the gear jamming and not fully retracting after takeoff.
- [NTSB CEN11WA412](https://openairdocs.org/ntsb/CEN11WA412.md): McDonnell Douglas Helicopter 369E · Glastonbury, United Kingdom · Accident · Serious injuries · Foreign investigation · Jun 19, 2011 · G-KSWI · Substantial damage
  > On June 19, 2011, at 1420 universal coordinated time (UTC), a McDonnell Douglas Helicopter Company model 369E, United Kingdom registration G-KSWI, s/n 0204E, was substantially damaged during an emergency landing after experiencing a mechanical failure of the…
- [NTSB WPR11LA265](https://openairdocs.org/ntsb/WPR11LA265.md): Aerovodochody L-29 Delfin · Reno, NV · Accident · No injuries · Limited investigation · Final report · Jun 18, 2011 · N37KF · Substantial damage
  > The failure of a modified engine mount to keep the engine properly aligned, which resulted in partial failure of the rudder support structure due to the deflection of the jet engine exhaust.
- [NTSB CEN11CA387](https://openairdocs.org/ntsb/CEN11CA387.md): Beech B200 · Waukegan, IL · Accident · No injuries · Data collection · Final report · Jun 10, 2011 · N23WS · Substantial damage
  > The lightning strike during an en route descent.
- [NTSB CEN11IA369](https://openairdocs.org/ntsb/CEN11IA369.md): Embraer EMB-145 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Jun 3, 2011 · N607AE · No damage
  > The overheat and failure the brake during landing due to oxidation of the brake rotors, which went undetected by maintenance personnel. Contributing to the accident was maintenance personnel’s lack of familiarity with detailed brake oxidation inspection…
- [NTSB WPR11LA245](https://openairdocs.org/ntsb/WPR11LA245.md): Piper PA-46-310P · Lake Havasu, AZ · Accident · No injuries · Limited investigation · Final report · Jun 2, 2011 · N712MK · Substantial damage
  > The failure of the low pressure switch in the normal landing gear system, which prevented normal operation of that system, and the misrigging of the emergency extension gear release valve, which prevented the system from being depressurized to allow for the…
- [NTSB ERA11IA320](https://openairdocs.org/ntsb/ERA11IA320.md): Robinson Helicopter R22 Mariner · Redding, CT · Incident · No injuries · Incident investigation · Final report · May 29, 2011 · N8313E · No damage
  > The pilot's inadequate helicopter preflight inspection and the mechanic’s inadequate annual inspection, both of which failed to detect a worn bolt in the tail rotor teeter hinge prior to its fracture due to fatigue.
- [NTSB DCA11PA075](https://openairdocs.org/ntsb/DCA11PA075.md): Boeing 707-321B · Point Mugu, CA · Accident · Minor injuries · Final report · May 19, 2011 · N707AR · Substantial damage
  > the failure of a midspar fitting, which was susceptible to fatigue cracking and should have been replaced with a newer, more fatigue-resistant version of the fitting as required by an airworthiness directive. Also causal was an erroneous maintenance entry…
- [NTSB WPR11LA218](https://openairdocs.org/ntsb/WPR11LA218.md): Piper PA46-500TP · Rock Springs, WY · Accident · No injuries · Limited investigation · Final report · May 3, 2011 · N46ME · Substantial damage
  > The overstress fracture of the right aileron midspan hinge bracket due to modal vibrations created by a deflated right main landing gear tire during the takeoff roll.
- [NTSB CEN11LA315](https://openairdocs.org/ntsb/CEN11LA315.md): Hughes 269B · Edgerton, IN · Accident · No injuries · Limited investigation · Final report · Apr 29, 2011 · N9561F · Substantial damage
  > A loss of clearance between the tail rotor drive shaft and the tailboom bulkhead for undetermined reasons, which resulted in the overstress failure of the drive shaft.
- [NTSB WPR11LA205](https://openairdocs.org/ntsb/WPR11LA205.md): Bennett Midjet Mustang I · Ramona, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 10, 2011 · N611JB · Substantial damage
  > The pilot's inability to maintain directional control during the landing roll due to the overload separation of the left brake master cylinder from the left rudder pedal assembly.
- [NTSB ERA11LA239](https://openairdocs.org/ntsb/ERA11LA239.md): Beech BE99 · Cedartown, GA · Accident · No injuries · Limited investigation · Final report · Apr 10, 2011 · N899AE · Substantial damage
  > The failure of the left main landing gear bearings and supports due to inadequate lubrication by unknown maintenance personnel.
- [NTSB WPR11CA197](https://openairdocs.org/ntsb/WPR11CA197.md): Xtremeair Sbach 342 · Springerville, AZ · Accident · No injuries · Data collection · Final report · Apr 4, 2011 · N142WP · Substantial damage
  > The pilot's failure to properly secure loose objects in the cockpit area which resulted in a personal locator beacon becoming lodged in the elevator control torque tubes, restricting flight control movement.
- [NTSB ERA11LA150](https://openairdocs.org/ntsb/ERA11LA150.md): Flaglor Tom Kolb Aircraft MK III · Stetson, ME · Accident · Minor injuries · Limited investigation · Final report · Feb 17, 2011 · N213 · Substantial damage
  > The in-flight failure of the No. 1 composite propeller blade due to fatigue, which resulted in a violent vibration, loss of engine power, and a subsequent forced landing to unsuitable terrain.
- [NTSB CEN11FA193](https://openairdocs.org/ntsb/CEN11FA193.md): Gulfstream Aerospace GV-SP · Appleton, WI · Accident · No injuries · Field investigation · Final report · Feb 14, 2011 · N535GA · Substantial damage
  > The pilot flying's (PF) decision to land on a shorter-than-recommended runway with a known left hydraulic system failure rather than go around as suggested by the pilot-not-flying, his failure to immediately apply emergency brakes following the detection of…
- [NTSB CEN11IA180](https://openairdocs.org/ntsb/CEN11IA180.md): Hawker Beechcraft C90 · Evansville, IN · Incident · No injuries · Incident investigation · Final report · Feb 9, 2011 · N2057C · Minor damage
  > The peel chip-type failure of the co-pilot's window during initial climb.
- [NTSB WPR11CA112](https://openairdocs.org/ntsb/WPR11CA112.md): Harvey Patten Rans S-6ES · Buckeye, AZ · Accident · Minor injuries · Data collection · Final report · Jan 28, 2011 · N8053R · Substantial damage
  > A disconnection of the elevator control linkage due to incorrect installation or maintenance, which was due to the retaining nut backing off the bolt and allowing the bolt to fall out.
- [NTSB ERA11CA125](https://openairdocs.org/ntsb/ERA11CA125.md): Cessna 210K · Crestview, FL · Accident · No injuries · Data collection · Final report · Jan 26, 2011 · N5767J · Substantial damage
  > The pilot's inability to maintain control of the airplane during landing due to the failure of the right main tire.
- [NTSB DCA11WA023](https://openairdocs.org/ntsb/DCA11WA023.md): Boeing 737 · Montpelier, France · Incident · No injuries · Foreign investigation · Jan 10, 2011 · F-GIXD · No damage
  > On January 10, 2011, at 1330 local time a Boeing 737-700, registration F-GIXD experienced an AOA sensor blockage resulting in false stick-shaker during takeoff from Montpelier, France. The airplane was on a ferry flight to Toulouse, France, and returned to…
- [NTSB WPR11LA119](https://openairdocs.org/ntsb/WPR11LA119.md): Czech Sportplanes Sro Dynamic · Palm Springs, CA · Accident · No injuries · Limited investigation · Final report · Jan 9, 2011 · N595DY · Substantial damage
  > Inadvertent opening of the airplane canopy during the landing approach in a downdraft, which resulted in a rapid descent and hard landing.
- [NTSB CEN11CA143](https://openairdocs.org/ntsb/CEN11CA143.md): Rardin William I Kitfox III · Carlisle, AR · Accident · No injuries · Data collection · Final report · Jan 2, 2011 · N876KF · Substantial damage
  > Failure of the left main landing gear strut due to a pre-existing crack in the weld joint.

## 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") = 2011
  AND c."mKey" IN (SELECT e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e."isDefiningEvent" AND e."tier2Number" = '330')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/330/cases?year=2011

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