# NTSB investigations: Trailing edge flaps 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 CEN23LA335](https://openairdocs.org/ntsb/CEN23LA335.md): Piper PA-25-235 · Tyler, MN · Accident · No injuries · Class 4 · Limited · Final report · Jul 28, 2023 · N7094Z · Substantial damage > The pilot’s improper flap position during takeoff, which resulted in degraded climb performance and a collision with terrain. - [NTSB ERA23LA271](https://openairdocs.org/ntsb/ERA23LA271.md): Cessna 172 · Seymore, TN · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 18, 2023 · N12395 · Substantial damage > The flight instructor’s failure to properly configure the wing flaps for a soft-field takeoff on a short runway, which resulted in a runway overrun and collision with trees. - [NTSB ERA22LA116](https://openairdocs.org/ntsb/ERA22LA116.md): Dehavilland DHC-2 · Gilbert, SC · Accident · No injuries · Class 4 · Limited · Final report · Feb 5, 2022 · N1454Z · Substantial damage > The pilot’s improper flap setting, which resulted in a collision with trees during a takeoff attempt from a short grass field. - [NTSB CEN21FA199](https://openairdocs.org/ntsb/CEN21FA199.md): Cirrus Design SR22 · Port Aransas, TX · Accident · 1 fatal · Class 3 · Field · Final report · Apr 24, 2021 · N587CD · Destroyed > The pilot’s failure to maintain adequate airspeed during the go-around, which resulted in the airplane exceeding its critical angle of attack and a subsequent aerodynamic stall. - [NTSB GAA19CA029](https://openairdocs.org/ntsb/GAA19CA029.md): Capital Holdings 226 CCX-2000 · Dahlonga, GA · Accident · No injuries · Data collection · Final report · Oct 18, 2018 · N468LM · Substantial damage > The pilot's improper landing flare, which resulted in a bounced landing and his subsequent failure to maintain directional control. Also causal to the accident was the pilot’s failure to retract the flaps during the aborted landing, which resulted in the… - [NTSB GAA18CA575](https://openairdocs.org/ntsb/GAA18CA575.md): Piper PA28 · Spokane, WA · Accident · Serious injuries · Data collection · Final report · Sep 29, 2018 · N40825 · Substantial damage > The pilot’s improper retraction of the flaps during a go-around, which resulted in the airplane’s failure to climb and its subsequent collision with trees. - [NTSB GAA18CA287](https://openairdocs.org/ntsb/GAA18CA287.md): Maule M 7 · Burnet, TX · Accident · No injuries · Data collection · Final report · May 19, 2018 · N427LS · Substantial damage > The pilot’s failure to maintain directional control during landing in gusting wind conditions and with an incorrect flap configuration. - [NTSB ERA17LA141](https://openairdocs.org/ntsb/ERA17LA141.md): Cessna R182 · Mooresville, NC · Accident · No injuries · Limited investigation · Final report · Mar 29, 2017 · N2383C · Substantial damage > The pilot's failure to properly configure the airplane's flaps for takeoff, which resulted in a longer ground roll and subsequent runway excursion. - [NTSB ERA16LA322](https://openairdocs.org/ntsb/ERA16LA322.md): Aero Vodochody L 39 · Norfolk, VA · Accident · No injuries · Limited investigation · Final report · Sep 23, 2016 · N139AJ · Substantial damage > An uncommanded flap retraction for reasons that could not be determined, as a postaccident examination of the flap system did not reveal evidence of any preaccident anomalies. - [NTSB CEN16LA342](https://openairdocs.org/ntsb/CEN16LA342.md): Fairchild M 62A-3 · Madison, OH · Accident · No injuries · Limited investigation · Final report · Aug 30, 2016 · N47164 · Substantial damage > The pilot's failure to follow the Before Takeoff checklist and his improper use of flaps during takeoff, which degraded the airplane's climb performance and resulted in a collision with trees. - [NTSB GAA16CA157](https://openairdocs.org/ntsb/GAA16CA157.md): Cessna 172 · Nashville, TN · Accident · No injuries · Data collection · Final report · Mar 20, 2016 · N118ET · Substantial damage > The pilot's excessive pitch up and incorrect action of selecting flaps to zero degrees, which resulted in a tail strike during a go-around in crosswind conditions. - [NTSB CEN15LA343](https://openairdocs.org/ntsb/CEN15LA343.md): Cessna 172G · Hartington, NE · Accident · Serious injuries · Limited investigation · Final report · Aug 8, 2015 · N5800R · Substantial damage > The pilot’s decision to use an excessive, unapproved flap setting for takeoff, which significantly increased the induced drag and resulted in an aerodynamic stall when the airplane flew out of ground effect. - [NTSB ERA15LA274](https://openairdocs.org/ntsb/ERA15LA274.md): Cessna 172S · Linden, NJ · Accident · No injuries · Limited investigation · Final report · Jul 19, 2015 · N962SP · Substantial damage > The pilot’s delayed decision to reject the takeoff, which resulted in a runway overrun. Contributing to the accident was the pilot’s failure to properly configure the flaps for maximum takeoff performance with the airplane near its maximum gross weight. - [NTSB CEN15IA076](https://openairdocs.org/ntsb/CEN15IA076.md): Cessna 182S · Springfield, IL · Incident · No injuries · Incident investigation · Final report · Dec 10, 2014 · N661SP · Minor damage > The improper installation of a doubler patch, which prevented the right flap from actuating and moving properly and led to the subsequent interference with the aileron. - [NTSB CEN14FA435](https://openairdocs.org/ntsb/CEN14FA435.md): Cessna 172N · Natchitoches, LA · Accident · 1 fatal · Field investigation · Final report · Aug 17, 2014 · N734YW · Substantial damage > The partial loss of engine power due to the exhaust valve rocker retaining stud backing out of the cylinder head, which resulted in the exhaust valve being stuck in the closed position. Contributing to the accident was the pilot’s failure to configure the… - [NTSB ANC14FA022](https://openairdocs.org/ntsb/ANC14FA022.md): Cessna 208B · Kwethluk, AK · Accident · 2 fatal · Field investigation · Final report · Apr 8, 2014 · N126AR · Destroyed > The check airman's delayed remedial action and initiation of a recovery procedure after a simulated pitch trim excursion, which resulted in a loss of airplane control. - [NTSB ENG13IA027](https://openairdocs.org/ntsb/ENG13IA027.md): Boeing 747 · Atlanta, GA · Incident · No injuries · Incident investigation · Final report · May 19, 2013 · B18701 · Minor damage > Failure of the right inboard foreflap outboard fitting due to fatigue and bearing anomalies on the sequence carriages which resulted in the partial separation of the right inboard foreflap. Contributing to the incident was the failure of maintenance personnel… - [NTSB ERA13LA037](https://openairdocs.org/ntsb/ERA13LA037.md): Cessna 172D · Indian Trail, NC · Accident · No injuries · Limited investigation · Final report · Oct 20, 2012 · N2879U · Substantial damage > The pilot’s improper use of flaps for takeoff, which resulted in the airplane’s failure to attain adequate climb airspeed and subsequent collision will trees during takeoff. - [NTSB CEN12LA500](https://openairdocs.org/ntsb/CEN12LA500.md): Air Tractor AT-502B · Newellton, LA · Accident · No injuries · Limited investigation · Final report · Aug 1, 2012 · N5128U · Substantial damage > The pilot's inadequate takeoff planning and his use of an improper flap setting, which resulted in a runway excursion and collision with terrain during takeoff. - [NTSB CEN12LA459](https://openairdocs.org/ntsb/CEN12LA459.md): Air Tractor AT-502B · Wisner, LA · Accident · Serious injuries · Limited investigation · Final report · Jul 18, 2012 · N205SK · Substantial damage > The pilot’s inadequate takeoff planning that did not consider the reduced acceleration due to a rough, turf runway and his use of an improper flap setting, which resulted in a collision with terrain during takeoff. - [NTSB WPR12FA297](https://openairdocs.org/ntsb/WPR12FA297.md): Mooney M20L · Scottsdale, AZ · Accident · Serious injuries · Field investigation · Final report · Jul 9, 2012 · N137MP · Substantial damage > The pilot's failure to maintain airplane control during an aborted landing, and the flight instructor’s delayed remedial action. Contributing to the accident were the pilot’s improper landing flare, which resulted in a bounced landing, and his premature flap… - [NTSB ERA12CA414](https://openairdocs.org/ntsb/ERA12CA414.md): Cessna 177 · West Milford, NJ · Accident · No injuries · Data collection · Final report · Jun 23, 2012 · N30163 · Substantial damage > The pilot's improper full flap retraction while performing a go-around maneuver, which resulted in a loss of airplane control. - [NTSB CEN12LA059](https://openairdocs.org/ntsb/CEN12LA059.md): Cessna 172M · Sturgis, SD · Accident · 1 fatal · Limited investigation · Final report · Nov 11, 2011 · N13584 · Substantial damage > The student pilot’s failure to maintain control of the airplane during takeoff with extended flaps. - [NTSB WPR11CA338](https://openairdocs.org/ntsb/WPR11CA338.md): Rolladen Schneider OHG LS-3-17 · Adelanto, CA · Accident · Serious injuries · Data collection · Final report · Jul 16, 2011 · N84AM · Substantial damage > The pilot's incorrect use of the flap control pitch control recovery which resulted in an aerodynamic stall. - [NTSB WPR11CA295](https://openairdocs.org/ntsb/WPR11CA295.md): Cessna 172S · Price, UT · Accident · No injuries · Data collection · Final report · Jun 27, 2011 · N674SP · Substantial damage > The pilot's decision to attempt a takeoff at a density altitude outside of the takeoff performance envelope of the aircraft along with using an aircraft flap setting higher than the manufacture's recommended setting for takeoff. - [NTSB WPR11LA272](https://openairdocs.org/ntsb/WPR11LA272.md): Air Tractor AT-301 · Hogeland, MT · Accident · 1 fatal · Limited investigation · Final report · Jun 21, 2011 · N3661B · Substantial damage > Collision with the ground 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. - [NTSB CEN11LA352](https://openairdocs.org/ntsb/CEN11LA352.md): Aero Commander 100-180 · Athens, OH · Accident · No injuries · Limited investigation · Final report · May 21, 2011 · N4016X · Substantial damage > The pilot's failure to maintain adequate airspeed in the flare which resulted in a stall and a hard landing. - [NTSB WPR11LA169](https://openairdocs.org/ntsb/WPR11LA169.md): Cirrus SR22 · Mesa, AZ · Accident · No injuries · Limited investigation · Final report · Mar 19, 2011 · N329SM · Substantial damage > The pilot's attempt to correct a landing float by adding power, followed by his premature attempt to climb the airplane out of ground effect during a balked landing, which resulted in an aerodynamic stall. Contributing to the accident was the pilot's failure… - [NTSB DCA10CA061](https://openairdocs.org/ntsb/DCA10CA061.md): Boeing 747 · Miami, FL · Accident · No injuries · Data collection · Final report · May 17, 2010 · N498MC · Substantial damage > impact of the fore flap with the aft fuselage after fatigue failure of the right wing fore flap carriage assembly attachment fitting at position 6. - [NTSB CEN10FA097](https://openairdocs.org/ntsb/CEN10FA097.md): Mitsubishi MU-2B-60 · Elyria, OH · Accident · 4 fatal · Field investigation · Final report · Jan 18, 2010 · N80HH · Destroyed > The pilot's failure to maintain adequate airspeed during the instrument approach, which resulted in an aerodynamic stall and impact with terrain. - [NTSB CEN09FA393](https://openairdocs.org/ntsb/CEN09FA393.md): Piper PA-32R-300 · Lakeview, AR · Accident · 3 fatal · Field investigation · Final report · Jun 26, 2009 · N38171 · Substantial damage > The pilot's poor judgment/decision making in attempting the no-flap takeoff, his failure to comply with weight and balance limitations, and his failure to calculate the airplane's performance under exiting conditions. - [NTSB ERA09FA345](https://openairdocs.org/ntsb/ERA09FA345.md): Piper PA-28R-180 · Scotia, NY · Accident · 3 fatal · Field investigation · Final report · Jun 14, 2009 · N3226R · Substantial damage > The flight instructor's failure to ensure that the airplane was properly configured for a short field takeoff, and his decision to not abort the takeoff. - [NTSB LAX08FA301](https://openairdocs.org/ntsb/LAX08FA301.md): Cessna 172S · Fullerton, CA · Accident · Serious injuries · Field investigation · Final report · Oct 1, 2008 · N2190W · Substantial damage > The pilot's failure to follow the takeoff checklist and verify the proper flap setting before takeoff. ## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01035753')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/01035753/cases --- 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.