# NTSB investigations: Pratt & Whitney Canada PT6A-60A: Loss of control - in flight 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 SEA06FA022](https://openairdocs.org/ntsb/SEA06FA022.md): Cessna 425 · Belgrade, MT · Accident · 1 fatal · Field investigation · Final report · Nov 30, 2005 · N701QR · Destroyed > The pilot's failure to maintain airspeed during the approach which resulted in an inadvertent stall. Factors associated with the accident were dark night conditions, clouds, icing conditions, low visibility and snow. - [NTSB DFW05FA170](https://openairdocs.org/ntsb/DFW05FA170.md): Beech E90 · New Roads, LA · Accident · 5 fatal · Field investigation · Final report · Jun 24, 2005 · N62BL · Destroyed > The pilot's failure to maintain airspeed and subsequent loss of control during a go-around maneuver. - [NTSB DFW05LA034](https://openairdocs.org/ntsb/DFW05LA034.md): Beech BE-200 · Bay View, TX · Accident · No injuries · Limited investigation · Final report · Dec 10, 2004 · N648KA · Destroyed > The pilot's failure to maintain directional control as result of his improper runway selection for takeoff. A contributing factor was the prevailing right quartering tailwind. - [NTSB FTW03FA024](https://openairdocs.org/ntsb/FTW03FA024.md): Piper PA-31T · Hobbs, NM · Accident · 1 fatal · Field investigation · Final report · Oct 30, 2002 · N3998Y · Destroyed > The pilot's loss of control while in instrument meteorological conditions during initial takeoff climb. Contributing factors were the prevailing clouds and fog. - [NTSB DCA03MA008](https://openairdocs.org/ntsb/DCA03MA008.md): Beech King Air 100 · Eveleth, MN · Accident · 8 fatal · Class 1 · Major · Final report · Oct 25, 2002 · N41BE · Destroyed > The flight crew's failure to maintain adequate airspeed, which led to an aerodynamic stall from which they did not recover. - [NTSB LAX02FA101](https://openairdocs.org/ntsb/LAX02FA101.md): Cessna 425 · San Jose, CA · Accident · 3 fatal · Field investigation · Final report · Mar 6, 2002 · N444JV · Destroyed > the pilot's loss of control and resulting exceedence of the design stress limits of the aircraft, which led to an in-flight structural failure. The pilot's loss of control was due in part to the loss of primary airspeed reference resulting from pitot tube… - [NTSB LAX02LA030](https://openairdocs.org/ntsb/LAX02LA030.md): Beech C-99 · Flagstaff, AZ · Accident · No injuries · Limited investigation · Final report · Nov 29, 2001 · N228BH · Substantial damage > The pilot's failure to maintain adequate airspeed and his failure to maintain directional control. Contributing factors were the icing conditions, icing, and the improper use of the anti-ice/deicing equipment. - [NTSB NYC02TA029](https://openairdocs.org/ntsb/NYC02TA029.md): Kaman K-1200 · Bloomfield, CT · Accident · Minor injuries · Final report · Nov 14, 2001 · N361KA · Substantial damage > The pilot's failure to maintain aircraft control while hovering. A factor related to the accident was the pilots lack of experience in type of aircraft. - [NTSB CHI95FA182](https://openairdocs.org/ntsb/CHI95FA182.md): Grumman G-21E · West Chicago, IL · Accident · 2 fatal · Field investigation · Final report · Jun 14, 1995 · N121H · Destroyed > The pilot allowed excessive nose-up rotation of the airplane during lift-off, and failed to obtain and/or maintain adequate airspeed, which resulted in an inadvertent stall and collision with the terrain. Factors relating to the accident were: the pilot's… - [NTSB NYC92FA053](https://openairdocs.org/ntsb/NYC92FA053.md): Beech 1900C · Block Island, RI · Accident · 3 fatal · Class 1 · Field · Final report · Dec 29, 1991 · N811BE · Destroyed > The instructor pilot's loss of altitude awareness and possible spatial disorientation, which resulted in the loss of control of the airplane at an altitude too low for recovery; and company management's lack of involvement in and oversight of its Beechcraft… - [NTSB DCA91MA042](https://openairdocs.org/ntsb/DCA91MA042.md): Beech C99 · Birmingham, AL · Accident · 13 fatal · Major investigation · Final report · Jul 10, 1991 · N7217L · Destroyed > The decision of the captain to initiate and continue an instrument approach into clearly identified thunderstorm activity, resulting in a loss of control of the airplane from which the flightcrew was unable to recover and subsequent collision with obstacles… - [NTSB DEN90FA030](https://openairdocs.org/ntsb/DEN90FA030.md): Beech F-90 · Lincoln, NM · Accident · 2 fatal · Field investigation · Final report · Dec 2, 1989 · N9PU · Destroyed > Loss of control due to pilot disorientation while conducting a non precision instrument approach. Contributing to the accident was the pilot's lack of instrument and multiengine experience, and the existing adverse weather. - [NTSB BFO88FA067](https://openairdocs.org/ntsb/BFO88FA067.md): de Havilland DHC-6-200 · Chantilly, VA · Accident · 1 fatal · Field investigation · Final report · Jul 20, 1988 · N7267 · Destroyed > The pilot inadvertently misused the flaps, by failing to set the flaps to the proper setting. The flaps were set full down. This caused the aircraft to pitch up steeply after liftoff. Additionally, the flight control lock was probably installed during some… - [NTSB CHI88MA026](https://openairdocs.org/ntsb/CHI88MA026.md): Beech 200 · Jefferson, WI · Accident · 8 fatal · Major investigation · Final report · Nov 16, 1987 · N334DP · Destroyed > While cruising abv frzg lvl at 12,000', the flt was clrd to dscnd & maint 9000'. Abt 1-1/2 min ltr, the flt declared a mayday (emergency). Radio & radar ctc were lost & the acft crashed in a nr vertical dscnt. Radar data showed that after starting a dscnt,… - [NTSB ATL86FEK04](https://openairdocs.org/ntsb/ATL86FEK04.md): Ayres S2R-T15 · Mandale, OH · Accident · No injuries · Final report · Jul 16, 1986 · N4015P · Substantial damage > The acft stalled in turbulent air during a 180 turn while crop spraying at about 150 ft AGL. The plt said he increased power & dropped the acft nose while turning an additional 20 degrees to avoid trees. The recovery of positive control was in process when… - [NTSB ANC86LA025](https://openairdocs.org/ntsb/ANC86LA025.md): de Havilland DHC-6 · Mekoryuk, AK · Accident · No injuries · Limited investigation · Final report · Feb 7, 1986 · N204EH · Substantial damage > The PIC stated that he was landing to the southwest because the fog was obscuring the apch path to rwy 05. After aligning with rwy 23, the acft drifted off course. The plt was attempting to realign the acft with the rwy when he touched down in a bank and… - [NTSB CHI85LA151](https://openairdocs.org/ntsb/CHI85LA151.md): de Havilland DHC-6-200 · Grand Rapids, MI · Accident · No injuries · Limited investigation · Final report · Apr 3, 1985 · N3434 · Substantial damage > The 14 CFR 135 pilot with light load of cargo was taking offof 10000 x 150 ft runway pilot said rt engine lost power he reduced power to ld was 50 ft AGL and bounced on second touchdown acft dept runway at 45 angle nose gear broke off in sod wind was 30 off… ## 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 ('52043', '51999') 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" = 250)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=52043&occurrence=250 --- 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.