# NTSB investigations: Engine cowling system

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 ERA21LA155](https://openairdocs.org/ntsb/ERA21LA155.md): Socata MS894A · Monroe, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 15, 2021 · N42BF · Substantial damage
  > Maintenance personnel’s failure to properly inspect and maintain the airplane’s engine cowling latches, which resulted in the in-flight separation of the engine cowling and a subsequent forced landing.
- [NTSB CEN20LA082](https://openairdocs.org/ntsb/CEN20LA082.md): Cessna 560 · Aledo, TX · Accident · No injuries · Class 3 · Limited · Final report · Feb 12, 2020 · N654CE · Substantial damage
  > The in-flight separation of the upper and lower right engine cowlings for reasons that could not be determined based on available evidence.
- [NTSB CEN20LA041](https://openairdocs.org/ntsb/CEN20LA041.md): Cessna 525A · Scotts Bluff, NE · Accident · No injuries · Class 3 · Limited · Final report · Dec 18, 2019 · CGOJG · Substantial damage
  > The installation of incorrect mounting hardware to secure the right engine cowl, which resulted in an in-flight separation and impact with the horizontal stabilizer and elevator.
- [NTSB WPR20LA035](https://openairdocs.org/ntsb/WPR20LA035.md): Zenith Stol CH701 · Byron, CA · Accident · No injuries · Class 3 · Limited · Final report · Nov 29, 2019 · N701WJ · Substantial damage
  > The pilot/builder's improper construction of the cowling, which resulted in inadequate venting of the engine, its overheating, and a partial loss of engine power.
- [NTSB GAA17CA557](https://openairdocs.org/ntsb/GAA17CA557.md): Bellet James J Vans RV 8 · Orange, MA · Accident · Minor injuries · Data collection · Final report · Sep 26, 2017 · N184SJ · Substantial damage
  > The pilot's failure to remove the engine cowl plugs during preflight, which resulted in excessive engine cylinder head temperatures during climb and a total loss of engine power.
- [NTSB CEN12CA474](https://openairdocs.org/ntsb/CEN12CA474.md): Eurocopter Deutschland MBB-BK 117 C-2 · Houston, TX · Accident · No injuries · Data collection · Final report · Jul 24, 2012 · N455MH · Substantial damage
  > The pilot’s inadequate preflight inspection, which failed to detect the unsecured cowling latches and resulted in the in-flight opening of an engine cowling.
- [NTSB ENG12IA003](https://openairdocs.org/ntsb/ENG12IA003.md): Boeing 747-451 · Detroit, MI · Incident · No injuries · Incident investigation · Final report · Oct 23, 2011 · N661US · Minor damage
  > The penetration of turbine blade fragments through the rear turbine case, which punctured the No. 4 bearing oil pressure supply tube, allowing misted oil to contact the hot engine case and ignite the undercowl fire. Contributing to the incident was the…
- [NTSB ENG11IA051](https://openairdocs.org/ntsb/ENG11IA051.md): Boeing 757-222 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Sep 26, 2011 · N526UA · Minor damage
  > **This probable cause was modified on 4/5/2012. Please see the public docket for this accident to view the original probable cause.** The initial damage to the fan blades was caused by the ingestion of a Red-Tailed Hawk that caused one or more fan blades to…
- [NTSB WPR09CA415](https://openairdocs.org/ntsb/WPR09CA415.md): Paul B. Johnson Avid Mark IV · Nampa, ID · Accident · No injuries · Data collection · Final report · Aug 21, 2009 · N333PD · Substantial damage
  > The airplane's encounter with tall vegetation that ensnared the landing gear during an off-field precautionary landing.
- [NTSB CEN09CA218](https://openairdocs.org/ntsb/CEN09CA218.md): Bell 222 · Milliken, CO · Accident · No injuries · Data collection · Final report · Mar 13, 2009 · N222LL · Substantial damage
  > The separation of the left engine cowling for undetermined reasons.
- [NTSB CHI08LA071](https://openairdocs.org/ntsb/CHI08LA071.md): Airbus Industrie A319-114 · Detroit, MI · Accident · No injuries · Limited investigation · Final report · Jan 9, 2008 · N349NB · Substantial damage
  > The separation of the engine cowling which resulted from maintenance personnel failing to follow maintenance procedures in that they did not latch the engine cowling following the maintenance inspection. A factor associated with the accident was their…

## 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", '01057110'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01057110/cases

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