# TE flap control system

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Flight control system](https://openairdocs.org/ntsb-findings/010227) › TE flap control system
- NTSB code: 01022750
- Cases: 74
- In the probable cause: 61
- Fatal cases: 12
- All cases: https://openairdocs.org/ntsb-findings/01022750/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01022750/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01022750

## Cases per year (in the probable cause / all)

- 2008: 3 / 3
- 2009: 1 / 5
- 2010: 6 / 7
- 2011: 4 / 4
- 2012: 6 / 6
- 2013: 2 / 3
- 2014: 3 / 4
- 2015: 1 / 1
- 2016: 6 / 6
- 2017: 3 / 4
- 2018: 7 / 8
- 2019: 2 / 2
- 2020: 2 / 2
- 2021: 2 / 3
- 2022: 2 / 2
- 2023: 1 / 3
- 2024: 7 / 8
- 2025: 3 / 3

## Defining events in these cases

- [Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241): 11 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 11 cases
- [Runway excursion](https://openairdocs.org/ntsb-events/300): 9 cases
- [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 8 cases
- [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 6 cases
- [Abnormal runway contact](https://openairdocs.org/ntsb-events/090): 6 cases
- [Collision during takeoff/land](https://openairdocs.org/ntsb-events/490): 5 cases
- [Landing area overshoot](https://openairdocs.org/ntsb-events/380): 4 cases
- [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 4 cases
- [Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470): 2 cases

## Aircraft models (registry)

- [Cessna 172M](https://openairdocs.org/model/cessna-172m): 4 cases
- [Cirrus Design SR20](https://openairdocs.org/model/cirrus-design-sr20): 3 cases
- [Cessna 182P](https://openairdocs.org/model/cessna-182p): 3 cases
- [Cessna 150F](https://openairdocs.org/model/cessna-150f): 3 cases
- [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180): 2 cases
- [Piper PA-28-181](https://openairdocs.org/model/piper-pa-28-181): 2 cases
- [Mooney M20J](https://openairdocs.org/model/mooney-m20j): 2 cases
- [Cessna 182Q](https://openairdocs.org/model/cessna-182q): 2 cases
- [Piper PA 46-350P](https://openairdocs.org/model/piper-pa-46-350p): 1 cases
- [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350): 1 cases

## Other findings in the same cases

- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 27 cases
- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 25 cases
- [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 14 cases
- [Use of checklist](https://openairdocs.org/ntsb-findings/02063030) (Personnel issues): 11 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 10 cases
- [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 10 cases
- [Angle of attack](https://openairdocs.org/ntsb-findings/01062042) (Aircraft): 10 cases
- [Descent/approach/glide path](https://openairdocs.org/ntsb-findings/01062040) (Aircraft): 9 cases
- [Configuration](https://openairdocs.org/ntsb-findings/01062017) (Aircraft): 9 cases
- [Delayed action](https://openairdocs.org/ntsb-findings/02041025) (Personnel issues): 6 cases

## Newest cases

- [NTSB CEN26LA033](https://openairdocs.org/ntsb/CEN26LA033), Oct 30, 2025: Cessna 182H (N2040X), Lakeview, AR, substantial damage. Probable cause: The pilot’s failure to maintain a proper approach path during landing which resulted in a collision with terrain short of the runway. Contributing to the accident was the improper flap position…
- [NTSB WPR25LA283](https://openairdocs.org/ntsb/WPR25LA283), Sep 17, 2025: Cessna 150F (N8047F), Rigby, ID, substantial damage. Probable cause: The flight instructor’s improper flap position during takeoff, which resulted in degraded climb performance and a subsequent impact with a building.
- [NTSB ERA25LA322](https://openairdocs.org/ntsb/ERA25LA322), Aug 19, 2025: Cessna 182 (N691DM), Edgartown, MA, substantial damage. Probable cause: The accident was the pilot’s failure to properly configure the airplane for a soft-field takeoff, which resulted in his decision to abort the takeoff and the subsequent runway overrun.
- [NTSB WPR24LA322](https://openairdocs.org/ntsb/WPR24LA322), Sep 27, 2024: Vans RV-12 (N916PH), Paris, ID, substantial damage. Probable cause: The pilot’s failure to properly configure the flaps, which resulted in a loss of directional control during takeoff.
- [NTSB ERA24FA371](https://openairdocs.org/ntsb/ERA24FA371), Sep 8, 2024: Piper PA28R (N3757T), Vergennes, VT, substantial damage, 4 fatal. Probable cause: The flight instructor’s failure to maintain control of the airplane, which resulted in the airplane exceeding its critical angle of attack and entering an aerodynamic stall. Contributing to the…
- [NTSB CEN24LA328](https://openairdocs.org/ntsb/CEN24LA328), Jul 20, 2024: Hawker Beechcraft Hawker 900XP (N526FC), Telluride, CO, substantial damage. Probable cause: The flight crew’s failure to properly configure the airplane for takeoff in a high-density altitude environment, which resulted in a loss of control and a subsequent runway excursion. Contributing to…
- [NTSB WPR24LA175](https://openairdocs.org/ntsb/WPR24LA175), Jun 4, 2024: Dennis T Kirby/Michael B Kirby Murphy Rebel (N79ZT), Edgewood, NM, substantial damage. Probable cause: The pilot’s improper installation of the aileron and flap control systems, which resulted in a loss of directional control during the takeoff roll and subsequent runway excursion.
- [NTSB ERA24LA224](https://openairdocs.org/ntsb/ERA24LA224), May 17, 2024: Cirrus Design SR20 (N462PW), Lagrangeville, NY, substantial damage. Probable cause: The pilot’s failure to maintain control of the airplane during the landing and subsequent go-around attempt. Also causal was the flight instructor’s delayed remedial action.
- [NTSB CEN24LA178](https://openairdocs.org/ntsb/CEN24LA178), May 8, 2024: Cessna 172M (N69PW), Midland, TX, substantial damage. Probable cause: The pilot’s failure to maintain airplane control during a go-around in a gusting crosswind, which resulted in an aerodynamic stall and collision with terrain. Contributing to the accident was the…
- [NTSB CEN24FA164](https://openairdocs.org/ntsb/CEN24FA164), Apr 22, 2024: Lancair Legacy FG (N550NL), Spicewood, TX, destroyed, 1 fatal. Probable cause: The pilot’s failure to properly configure the airplane during a go-around in gusting wind conditions, and his subsequent exceedance of the airplane’s critical angle of attack, which resulted in an…

NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted.

Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1).

NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names.

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