# NTSB investigations, CA: Emergency descent initiated

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 WPR26LA071](https://openairdocs.org/ntsb/WPR26LA071.md): Cirrus Design SR22T · Lake Elsinore, CA · Accident · No injuries · Class 4 · Limited · Final report · Dec 23, 2025 · N272HM · Substantial damage
  > The pilot’s intentional deployment of the airframe parachute system due to task-saturation in instrument meteorological conditions.
- [NTSB WPR24LA067](https://openairdocs.org/ntsb/WPR24LA067.md): Bell 206B · El Centro, CA · Accident · No injuries · Class 3 · Limited · Final report · Dec 24, 2023 · N111PM · Substantial damage
  > An in-flight failure of the engine-to-transmission driveshaft due to a fatigue fracture of the forward-most flex plate in the forward KAflex coupling that resulted from a loose bolt attachment between the flex plate and the forward driveshaft coupling.…
- [NTSB WPR22LA291](https://openairdocs.org/ntsb/WPR22LA291.md): Airbus Helicopters AS350B3 · Chino, CA · Accident · No injuries · Class 4 · Limited · Final report · Aug 4, 2022 · N833SB · Substantial damage
  > The subsequent delamination of the main rotor blades as a result of an unidentified main rotor blade impact with vegetation during a previous flight by another pilot.
- [NTSB WPR22LA005](https://openairdocs.org/ntsb/WPR22LA005.md): Beech B36TC · Los Banos, CA · Accident · No injuries · Class 3 · Limited · Final report · Oct 9, 2021 · N7220B · Substantial damage
  > The total loss of engine power due to the improper installation of the No. 4 connecting rod bolt nut during a recent overhaul.
- [NTSB WPR19LA187](https://openairdocs.org/ntsb/WPR19LA187.md): Beech C23 · Ludlow, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 30, 2019 · N24580 · Substantial damage
  > Maintenance personnel’s failure to properly tighten an oil line fitting, which resulted in a total loss of engine power.
- [NTSB WPR17FA179](https://openairdocs.org/ntsb/WPR17FA179.md): Michaelian Lancair IV-TP · Rio Linda, CA · Accident · 1 fatal · Field investigation · Final report · Aug 3, 2017 · N420M · Substantial damage
  > A loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB WPR17LA104](https://openairdocs.org/ntsb/WPR17LA104.md): Evolution Air Lancair Evolution · Firebaugh, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 15, 2017 · N846PM · Substantial damage
  > A failure in the windshield, frame, or windshield-to-frame bond, which resulted in a rapid decompression during cruise flight.
- [NTSB WPR16FA153](https://openairdocs.org/ntsb/WPR16FA153.md): Piper PA-31T · McKinleyville, CA · Accident · 4 fatal · Field investigation · Final report · Jul 29, 2016 · N661TC · Destroyed
  > An inflight fire in the floor area near the main bus tie circuit breaker panel that resulted from chafing between an electrical wire and a hydraulic line and/or airplane structure.
- [NTSB WPR14CA334](https://openairdocs.org/ntsb/WPR14CA334.md): Jabiru USA Sport J250 SP · Bakersfield, CA · Accident · No injuries · Data collection · Final report · Aug 8, 2014 · N526FL · Substantial damage
  > The pilot's failure to maintain an adequate approach which resulted in a long landing and runway overrun.

## 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" = 'CA' 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" = '130' 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/130/sequence?state=CA

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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.