# NTSB investigations, 2011: 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 ERA12LA117](https://openairdocs.org/ntsb/ERA12LA117.md): Piper PA-44-180 · Lawrenceville, GA · Accident · No injuries · Limited investigation · Final report · Dec 19, 2011 · N790GK · Substantial damage > The mechanic's improper installation and lubrication of the bushing on the right main landing gear truss assembly, which resulted in the landing gear not locking in the down position. - [NTSB DCA12MA020](https://openairdocs.org/ntsb/DCA12MA020.md): Eurocopter France AS350B2 · Las Vegas, NV · Accident · 5 fatal · Class 1 · Major · Final report · Dec 8, 2011 · N37SH · Destroyed > Sundance Helicopters’ inadequate maintenance of the helicopter, including (1) the improper reuse of a degraded self-locking nut, (2) the improper or lack of installation of a split pin, and (3) inadequate postmaintenance inspections, which resulted in the… - [NTSB CEN12LA071](https://openairdocs.org/ntsb/CEN12LA071.md): Juve Richard G Zodiac CH601 HDS · Clinton, AR · Accident · Serious injuries · Limited investigation · Final report · Nov 17, 2011 · N274 · Substantial damage > The inadvertent opening of the canopy during takeoff due to the improperly repaired forward canopy latch mechanism, which did not fully secure the canopy. - [NTSB CEN12CA035](https://openairdocs.org/ntsb/CEN12CA035.md): Houts Avid Mark IV · Hibbing, MN · Accident · Minor injuries · Data collection · Final report · Oct 21, 2011 · N43280 · Substantial damage > The improper installation of a hose clamp, which resulted in an oil line rupture and subsequent loss of engine oil pressure. - [NTSB CEN12CA029](https://openairdocs.org/ntsb/CEN12CA029.md): Hunt Sparrowhawk · Blair, NE · Accident · Minor injuries · Data collection · Final report · Oct 15, 2011 · N29HT · Substantial damage > The pilot/builder’s inadequate installation of a nosewheel steering component, which resulted in a shimmy and a loss of directional control during the takeoff roll. - [NTSB ERA12FA017](https://openairdocs.org/ntsb/ERA12FA017.md): Luscombe 8A · Dixie, GA · Accident · 1 fatal · Field investigation · Final report · Oct 8, 2011 · N41907 · Substantial damage > Maintenance personnel’s improper installation of the No. 2 cylinder’s connecting rod, which resulted in the disconnection of the rod and a subsequent loss of engine power. - [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 CEN11LA669](https://openairdocs.org/ntsb/CEN11LA669.md): Owen Vans RV-10 · Marietta, OH · Accident · Serious injuries · Limited investigation · Final report · Sep 27, 2011 · N499RV · Destroyed > The in-flight engine fire and loss of engine power due to an improperly installed fuel injector nozzle during a recent engine overhaul. - [NTSB WPR11MA454](https://openairdocs.org/ntsb/WPR11MA454.md): North American/Aero Classics P-51D · Reno, NV · Accident · 11 fatal · Class 1 · Major · Final report · Sep 16, 2011 · N79111 · Substantial damage > The reduced stiffness of the elevator trim tab system that allowed aerodynamic flutter to occur at racing speeds. The reduced stiffness was a result of deteriorated locknut inserts that allowed the trim tab attachment screws to become loose and to initiate… - [NTSB WPR11LA412](https://openairdocs.org/ntsb/WPR11LA412.md): Wheeler Vans RV-6A · Albany, OR · Accident · No injuries · Limited investigation · Final report · Aug 28, 2011 · N642DW · Substantial damage > The in-flight separation of a propeller blade due to fatigue. - [NTSB CEN11LA558](https://openairdocs.org/ntsb/CEN11LA558.md): Piper Aerostar 601P · Alpine, TX · Accident · No injuries · Limited investigation · Final report · Aug 22, 2011 · N8076J · Substantial damage > The pilot’s improper flare which resulted in a hard landing. Contributing to the accident was the pilot’s improper decision to fly the airplane with a known mechanical deficiency. - [NTSB ERA11FA458](https://openairdocs.org/ntsb/ERA11FA458.md): Cessna 310Q · Tupelo, MS · Accident · 1 fatal · Field investigation · Final report · Aug 17, 2011 · N444YM · Substantial damage > The pilot’s delayed reaction in performing the engine failure procedures and his failure to maintain adequate airspeed, which resulted in a loss of airplane control. Contributing to the accident was maintenance personnel’s improper torquing of the B-nut… - [NTSB ERA11LA461](https://openairdocs.org/ntsb/ERA11LA461.md): Piper PA-46-310P · Elizabethtown, NC · Accident · No injuries · Limited investigation · Final report · Aug 6, 2011 · N469CC · Substantial damage > The improper securing of a “B” nut on the power turbine control (Py) line by unknown maintenance personnel, which resulted in a total loss of engine power. Contributing to the accident was the pilot's failure to use the manual fuel override switch. - [NTSB WPR11LA352](https://openairdocs.org/ntsb/WPR11LA352.md): Eurocopter AS 350 B3 · Troutdale, OR · Accident · No injuries · Limited investigation · Final report · Jul 27, 2011 · N808LF · Substantial damage > The in-flight separation of the tail rotor drive shaft cover as a result of maintenance personnel not ensuring that it was secured after a maintenance inspection; also causal was the pilot’s inadequate preflight inspection of the helicopter. - [NTSB ERA11LA416](https://openairdocs.org/ntsb/ERA11LA416.md): Champion 7ECA · Hinesville, GA · Accident · Serious injuries · Limited investigation · Final report · Jul 23, 2011 · N5191X · Substantial damage > The total loss of engine power due to the improper installation of the carburetor air filter by maintenance personnel, which resulted in the filter becoming dislodged and obstructing the carburetor. Contributing to the accident was the pilot did not maintain… - [NTSB ERA11FA406](https://openairdocs.org/ntsb/ERA11FA406.md): Mooney M20K · Augusta, GA · Accident · 1 fatal · Field investigation · Final report · Jul 18, 2011 · N777CV · Substantial damage > The pilot’s decision to fly the airplane after maintenance personnel advised him that the airplane should not be flown because the pilot provided an incorrect propeller for installation and the subsequent failure of the propeller attachment bolts and the… - [NTSB CEN11LA490](https://openairdocs.org/ntsb/CEN11LA490.md): Darrow Stephen AL-6 · Peyton, CO · Accident · No injuries · Limited investigation · Final report · Jul 13, 2011 · N61262 · Substantial damage > The loss of engine power during the descent for reasons that could not be determined because a thorough examination of the engine could not be completed due to the remote accident site. - [NTSB CEN11LA460](https://openairdocs.org/ntsb/CEN11LA460.md): Ayres S2R600 · Pine Bluff, AR · Accident · No injuries · Limited investigation · Final report · Jul 6, 2011 · N3101S · Substantial damage > The use of an incorrect mounting bolt by maintenance persons to attach the engine torque sensor, which resulted in an internal failure of the torque sensor and subsequent loss of engine power due to fuel starvation. - [NTSB ERA11CA375](https://openairdocs.org/ntsb/ERA11CA375.md): Temco GC-1B · Sparta, TN · Accident · No injuries · Data collection · Final report · Jul 2, 2011 · N106S · Substantial damage > The improper installation of the right rudder control cable by maintenance personnel, which resulted in the pilot's inability to maintain directional control during takeoff. - [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 ERA11CA355](https://openairdocs.org/ntsb/ERA11CA355.md): Dotson William P Sngl Seat Hawk Arrow · Carthage, NC · Accident · No injuries · Data collection · Final report · Jun 20, 2011 · N4209F · Substantial damage > A partial loss of engine power due to the pilot’s improper installation of the engine’s No. 1 cylinder spark plugs. - [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 CEN11LA327](https://openairdocs.org/ntsb/CEN11LA327.md): Piper PA 46-350P · Chico, TX · Accident · No injuries · Limited investigation · Final report · May 8, 2011 · N80JB · Substantial damage > The mechanic's improper installation of the turbocharger's exhaust balance system, which resulted in an in-flight fire. - [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 WPR11CA157](https://openairdocs.org/ntsb/WPR11CA157.md): Aeronca 7EC · Big Bear City, CA · Accident · No injuries · Data collection · Final report · Mar 11, 2011 · N2349E · Substantial damage > The pilot's improper maintenance, which resulted in a wheel separating from the airplane during takeoff, and the airplane's subsequent nose over during the landing rollout. - [NTSB ERA11LA179](https://openairdocs.org/ntsb/ERA11LA179.md): Beech C23 · Carrollton, GA · Accident · No injuries · Limited investigation · Final report · Mar 4, 2011 · N6015F · Substantial damage > The mechanic's failure to re-connect a fuel line following an annual inspection. Contributing to the accident was the pilot's improper decision to depart with a known mechanical deficiency. - [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 WPR11LA113](https://openairdocs.org/ntsb/WPR11LA113.md): Piper PA-30 · Big Bear City, CA · Accident · Serious injuries · Limited investigation · Final report · Jan 30, 2011 · N64RJ · Substantial damage > The pilot’s failure to maintain the minimum single-engine control speed while on final approach for landing. Contributing to the accident was the pilot's decision to fly with a known deficiency in one engine and a loss of power in that engine for reasons that… - [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 WPR11LA108](https://openairdocs.org/ntsb/WPR11LA108.md): Piper PA-28-201T · Santa Ana, CA · Accident · No injuries · Limited investigation · Final report · Jan 21, 2011 · N47589 · Substantial damage > The failure of the left main landing gear due to the lack of lubrication. - [NTSB CEN11IA156](https://openairdocs.org/ntsb/CEN11IA156.md): Sikorsky 92 · Galliano, LA · Incident · No injuries · Incident investigation · Final report · Jan 19, 2011 · N920AL · Minor damage > The misalignment of the retaining washer during routine maintenance, resulting in the subsequent separation of the washer and nut. - [NTSB ERA11LA117](https://openairdocs.org/ntsb/ERA11LA117.md): Convair 340-71 · Charlotte Amalie · Accident · No injuries · Limited investigation · Final report · Jan 17, 2011 · N8277Q · Substantial damage > The captain’s decision to continue the flight with the left engine backfiring, resulting in an engine fire shortly after takeoff. Contributing to the accident were the captain’s decision to continue the flight following a report of black smoke trailing the… ## 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 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=2011 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.