# NTSB investigations, MD: Sys/Comp malf/fail (non-power)

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 ERA24LA037](https://openairdocs.org/ntsb/ERA24LA037.md): Cessna 210 · Frederick, MD · Accident · No injuries · Class 4 · Limited · Final report · Nov 13, 2023 · N9515X · Substantial damage
  > A failure of a hydraulic filter, which preluded normal extension of the landing gear. Also causal was the pilot’s failure to confirm that he landing gear was extended before landing, which resulted in a gear up landing.
- [NTSB ERA22LA148](https://openairdocs.org/ntsb/ERA22LA148.md): Cessna 525 · Middle River, MD · Accident · No injuries · Class 3 · Limited · Final report · Mar 7, 2022 · N22AU · Substantial damage
  > And undetermined failure of the brake system. Contributing to the accident was the failure of the pilots to locate and operate the emergency brake control, which resulted in a runway excursion and collision with terrain and an object.
- [NTSB ERA21LA289](https://openairdocs.org/ntsb/ERA21LA289.md): Piper PA-23 · Easton, MD · Accident · No injuries · Class 3 · Limited · Final report · Jul 15, 2021 · N776MC · Substantial damage
  > A total loss of left engine power and uncommanded feathering of the left propeller for reasons that could not be determined.
- [NTSB ERA18LA043](https://openairdocs.org/ntsb/ERA18LA043.md): Cessna 180 · Frederick, MD · Accident · Minor injuries · Limited investigation · Final report · Dec 3, 2017 · N399F · Substantial damage
  > The pilot's improper landing flare, which resulted in a bounced landing and the failure of the left main landing gear tire.
- [NTSB ERA18LA021](https://openairdocs.org/ntsb/ERA18LA021.md): Socata TB200 · Annapolis, MD · Accident · No injuries · Class 2 · Limited · Final report · Nov 10, 2017 · N207GT · Substantial damage
  > A loss of engine power for undetermined reasons after the disconnection of the propeller governor control due to inadequate securenment during maintenance.
- [NTSB ERA09LA057](https://openairdocs.org/ntsb/ERA09LA057.md): Campbell Earl S JR RV-6A · Cambridge, MD · Accident · No injuries · Limited investigation · Final report · Oct 26, 2008 · N914ES · 2 aircraft · Minor damage
  > The failure of the RV-6A's right brake assembly o-ring due to excessive heat.

## 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."eventStateOrRegion" = 'MD' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '330' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/330/sequence?state=MD

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