# LE 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) › LE flap control system
- NTSB code: 01022780
- Cases: 3
- In the probable cause: 3
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01022780/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01022780/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01022780

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

- 2014: 1 / 1
- 2017: 1 / 1
- 2019: 1 / 1

## Defining events in these cases

- [Collision during takeoff/land](https://openairdocs.org/ntsb-events/490): 1 cases
- [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 1 cases
- [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 1 cases

## Aircraft models (registry)

- [Dehavilland BEAVER DHC-2](https://openairdocs.org/model/dehavilland-beaver-dhc-2): 1 cases
- [Cessna A188B](https://openairdocs.org/model/cessna-a188b): 1 cases

## Other findings in the same cases

- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 3 cases
- [Configuration](https://openairdocs.org/ntsb-findings/01062017) (Aircraft): 2 cases
- [Rough terrain](https://openairdocs.org/ntsb-findings/03021015) (Environmental issues): 1 cases
- [Terrain, general](https://openairdocs.org/ntsb-findings/03021000) (Environmental issues): 1 cases
- [Use of checklist](https://openairdocs.org/ntsb-findings/02063030) (Personnel issues): 1 cases
- [Incorrect action selection](https://openairdocs.org/ntsb-findings/02041010) (Personnel issues): 1 cases
- [Attention](https://openairdocs.org/ntsb-findings/02021510) (Personnel issues): 1 cases

## Newest cases

- [NTSB GAA19CA563](https://openairdocs.org/ntsb/GAA19CA563), Sep 22, 2019: De Havilland Beaver DHC 2 (N77KZ), Mountain Village, AK, substantial damage. Probable cause: The pilot's improper takeoff configuration due to distraction, which resulted in the airplane’s failure to become airborne and its subsequent collision with rising terrain. Contributing to the…
- [NTSB ANC17CA038](https://openairdocs.org/ntsb/ANC17CA038), Jul 21, 2017: Dehavilland DHC 2 (N364RA), Dilllingham, AK, substantial damage. Probable cause: The pilot's failure to set the wing flaps to the "takeoff" position, which resulted in a longer-than-normal takeoff run and collision with terrain.
- [NTSB CEN14CA395](https://openairdocs.org/ntsb/CEN14CA395), Jul 23, 2014: Cessna A188B (N730GU), Milford, NE, substantial damage. Probable cause: The pilot's improper engine mixture setting which reduced available engine power, and his inadvertent retraction of flaps which resulted in an impact with crops and terrain.

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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