# NTSB investigations: Pratt & Whitney PT6A series: Airframe/component/system failure/malfunction 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 SEA07LA133](https://openairdocs.org/ntsb/SEA07LA133.md): Beech B-99 · Billings, MT · Accident · No injuries · Limited investigation · Final report · May 19, 2007 · N950AA · Substantial damage > The total failure of the nose landing gear actuator and the subsequent nose gear collapse during landing. - [NTSB CHI07IA067](https://openairdocs.org/ntsb/CHI07IA067.md): Piper PA-46-500TP · Fort Wayne, IN · Incident · No injuries · Incident investigation · Final report · Nov 18, 2006 · N4185L · Minor damage > The fatigue failure/separation of the engine mount's nose gear actuator attachment foot, and the manufacturer's inadequate engine mount/nose gear actuator attachment design. - [NTSB LAX07FA012](https://openairdocs.org/ntsb/LAX07FA012.md): Piper PA-42 · Prescott, AZ · Accident · 5 fatal · Field investigation · Final report · Oct 18, 2006 · N121CS · Destroyed > The failure of the pilot following a jet aircraft to maintain adequate separation from the high velocity jet core exhaust. The separation of the T-tail upper section vertical stabilizer of the following aircraft due to contact with the high velocity jet core… - [NTSB CHI06CA221](https://openairdocs.org/ntsb/CHI06CA221.md): Air Tractor AT-400 · Springfield, MN · Accident · No injuries · Data collection · Final report · Jul 31, 2006 · N23720 · Substantial damage > The pilot's inability to maintain directional control of the airplane as a result of the partial failure of the tail wheel assembly. A factor associated with the accident was the crop that the airplane contacted. - [NTSB MIA06FA117](https://openairdocs.org/ntsb/MIA06FA117.md): Beech 65-A90-1 · Tampa, FL · Accident · 1 fatal · Field investigation · Final report · Jun 12, 2006 · N7043G · Destroyed > The poor in-flight planning decision by the captain for his failure to establish the airplane on a stabilized approach for a forced landing, resulting in the airplane landing on a taxiway near the departure end of the runway. Contributing to the accident were… - [NTSB ANC05IA048](https://openairdocs.org/ntsb/ANC05IA048.md): Reims F406 · Nome, AK · Incident · No injuries · Incident investigation · Final report · Mar 9, 2005 · N6591R · Minor damage > The failure of the nose gear up lock actuator bracket during the landing approach due to fatigue cracking, which resulted in a nose wheel up landing. A factor associated with the incident is the mechanical binding of the nose wheel locking mechanism. - [NTSB ATL04CA189](https://openairdocs.org/ntsb/ATL04CA189.md): Beech D18S · Tullahoma, TN · Accident · No injuries · Data collection · Final report · Sep 6, 2004 · N432U · Substantial damage > Right tire burst during an attempted takeoff that resulted in loss of directional control and the on ground collision with the ground. - [NTSB CHI04LA213](https://openairdocs.org/ntsb/CHI04LA213.md): Cessna 208B · Big Rapids, MI · Accident · No injuries · Limited investigation · Final report · Aug 4, 2004 · N1037N · Substantial damage > The pilot's failure to verify that the cargo door was latched properly prior to flight and the subsequent in-flight opening of the door. A contributing factor was the box which departed the cargo compartment and struck the horizontal stabilizer. - [NTSB ATL04IA098](https://openairdocs.org/ntsb/ATL04IA098.md): Cessna 208B · Tunica, MS · Incident · No injuries · Incident investigation · Final report · Apr 27, 2004 · N738FX · Minor damage > The pilot's improper use of the emergency power lever which resulted in excessive operating temperatures. A factor was the improper adjustment of the emergency power lever dead band. - [NTSB ATL04IA073](https://openairdocs.org/ntsb/ATL04IA073.md): Cessna 208B · Auburn, AL · Incident · No injuries · Incident investigation · Final report · Feb 3, 2004 · N125AR · No damage > The fatigue fracture of the wire rope portion on the rudder control cable assembly due to improper installation and inadequate procedures by the aircraft manufacturer. - [NTSB CHI03IA153](https://openairdocs.org/ntsb/CHI03IA153.md): Beech 1900D · Milwaukee, WI · Incident · No injuries · Incident investigation · Final report · Jun 7, 2003 · N901SK · Minor damage > Failure of the aileron sprocket assembly at the sprocket-to-shaft braze joint. Contributing factors were the improper braze procedure used by the part manufacturer at the time of fabrication which resulted in an inferior quality joint and the inadequate… - [NTSB MIA03LA033](https://openairdocs.org/ntsb/MIA03LA033.md): Beech 200 · Jacksonville, FL · Accident · No injuries · Limited investigation · Final report · Dec 14, 2002 · N623VP · Substantial damage > Failure of the main landing gear locking mechanism for undetermined reasons, which resulted in the main landing gear collapsing, and damage to the airplane during landing. - [NTSB DEN02TA092](https://openairdocs.org/ntsb/DEN02TA092.md): Air Tractor AT-802A · Broomfield, CO · Accident · Minor injuries · Final report · Aug 14, 2002 · N91092 · Substantial damage > the airplane's left main landing gear tire separated from its wheel during takeoff roll for an undetermined reason. Contributing factors were the pilot's inability to maintain aircraft control during takeoff roll and the subsequent impact with the Visual… - [NTSB LAX00GA185](https://openairdocs.org/ntsb/LAX00GA185.md): Beech 65-90 · China Lake, CA · Accident · Serious injuries · Final report · May 5, 2000 · N32229 · Substantial damage > the inadvertent early deployment of the test parachute lines and dummy and it's entanglement with the horizontal stabilizer, which resulted from the operator's inadequate test plan substantiation process for shortening the parachute's static line.. - [NTSB LAX00FA169](https://openairdocs.org/ntsb/LAX00FA169.md): Air Tractor 502A · Queen Creek, AZ · Accident · 1 fatal · Field investigation · Final report · Apr 22, 2000 · N15466 · Destroyed > The fatigue failure and in-flight separation of the left wing due to the manufacturer's underestimation during the aircraft design process of the time interval from fatigue crack initiation to failure, and, the manufacturer's subsequent specification of an… - [NTSB ANC00LA033](https://openairdocs.org/ntsb/ANC00LA033.md): Cessna 208B · Holy Cross, AK · Accident · No injuries · Limited investigation · Final report · Mar 4, 2000 · N407GV · Substantial damage > An in-flight separation of a main landing gear tire mud flap, and subsequent impact with the horizontal stabilizer. - [NTSB ANC98IA004](https://openairdocs.org/ntsb/ANC98IA004.md): Cessna 208B · Kasigluk, AK · Incident · No injuries · Incident investigation · Final report · Oct 20, 1997 · N9304F · No damage > inadequate inspection of the aileron by company maintenance personnel, and the pilot's inadequate preflight inspection of the aileron, which led to the jamming of the left aileron due to loose balance weight retaining screws. - [NTSB FTW97LA331](https://openairdocs.org/ntsb/FTW97LA331.md): Air Tractor AT-802A · Pineland, TX · Accident · No injuries · Limited investigation · Final report · Aug 27, 1997 · N9197F · Substantial damage > failure of the right main wheel brake, during the landing roll. A factor relating to the accident was: the pilot's failure (or inability) to maintain directional control of the airplane, after loss of right braking action. - [NTSB NYC97IA123](https://openairdocs.org/ntsb/NYC97IA123.md): Beech 1900D · Clarksburg, WV · Incident · No injuries · Incident investigation · Final report · Jun 19, 1997 · N165YV · Minor damage > The right outboard flap detaching from the flap aft roller bearings, at the flap track, which was a result of the manufacturer's inadequate inspection program. - [NTSB LAX97LA125](https://openairdocs.org/ntsb/LAX97LA125.md): Cessna 425 · Fresno, CA · Accident · No injuries · Limited investigation · Final report · Mar 17, 1997 · N425TV · Substantial damage > failure of the right brake to function, due to the installation mechanic's failure to completely bleed all air from the lines. A factor in the accident was the pilot's decision to fly the unairworthy aircraft before the engine/propeller installation had been… - [NTSB NYC97FA045](https://openairdocs.org/ntsb/NYC97FA045.md): Beech 1900D · Bangor, ME · Accident · Minor injuries · Field investigation · Final report · Jan 10, 1997 · N139ZV · Substantial damage > The inadequate flight and winter operations training provided by the operator, and the pilot's improper decision to abort the takeoff while airborne above V1, due to a false stall warning horn. Also casual was the airport operations improper decision to… - [NTSB CHI97IA029](https://openairdocs.org/ntsb/CHI97IA029.md): Beech 1900D · Hopkensville, KY · Incident · No injuries · Incident investigation · Final report · Nov 17, 1996 · N841SK · Minor damage > the materials used in the new windshield, to meet new EPA requirements, were inadequate for the design. - [NTSB FTW94IA139](https://openairdocs.org/ntsb/FTW94IA139.md): Beech 1900C · Cheyenne, WY · Incident · No injuries · Incident investigation · Final report · Apr 27, 1994 · N141UE · Minor damage > A partial failure of the leading edge tip portion of one of the left engine propeller blades due to previous impact damage from an unknown source. - [NTSB DEN88IA207](https://openairdocs.org/ntsb/DEN88IA207.md): Beech 1900 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Sep 17, 1988 · N32017 · Minor damage - [NTSB CHI87FA191](https://openairdocs.org/ntsb/CHI87FA191.md): Beech B90 · Milwaukee, WI · Accident · No injuries · Field investigation · Final report · Aug 9, 1987 · N425K · Substantial damage > On departure the crew identified an in flight fire. An immediate shutdown of electrical, environmental and pressurization systems was initiated and a return was made to the airport with a successful landing. The fire was discovered to have occurred in the… - [NTSB DEN85LA244](https://openairdocs.org/ntsb/DEN85LA244.md): Cessna 425 · Boulder, CO · Accident · No injuries · Limited investigation · Final report · Sep 19, 1985 · N1222B · Substantial damage > The plt said he made a normal ldg. During ldg roll the left brake would not respond to pedal application. The plt errored by incorrectly feathering both props. The a/c went off the eng of r/w and struck a fence. Examination of the brake system revealed a… ## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52032', '52034') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=52032&occurrence=130 --- 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.