# NTSB investigations: Cessna 170B: Loss of engine power(total) - mech failure/malf

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 LAX04LA100](https://openairdocs.org/ntsb/LAX04LA100.md): Cessna 170B · Santa Rosa, CA · Accident · No injuries · Limited investigation · Final report · Jan 17, 2004 · N2502C · Substantial damage
  > the failure of the number 2 cylinder barrel due to fatigue. The lack of suitable landing terrain was a factor in the accident.
- [NTSB ANC98LA041](https://openairdocs.org/ntsb/ANC98LA041.md): Cessna 170B · Kenai, AK · Accident · No injuries · Limited investigation · Final report · Apr 25, 1998 · N2692D · Substantial damage
  > A failure of the number six cylinder rod bearing and connecting rod cap for undetermined reasons. Factors in the accident were snow covered terrain that was unsuitable for a forced landing.
- [NTSB LAX97LA146](https://openairdocs.org/ntsb/LAX97LA146.md): Cessna 170B · Furnace Creek, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 5, 1997 · N2294D · Substantial damage
  > Fuel starvation resulting from disconnection of the fuel selector valve. Factors which contributed to the accident were the pilot's intentional operation with known airplane deficiencies and the rough terrain.
- [NTSB ANC95LA053](https://openairdocs.org/ntsb/ANC95LA053.md): Cessna 170B · Chickaloon, AK · Accident · No injuries · Limited investigation · Final report · May 12, 1995 · N4366B · Substantial damage
  > The fracture of the crankshaft resulting in separation of the propeller and propeller flange in-flight. A factor associated with the accident was the lack of suitable terrain for an emergency landing.
- [NTSB ANC90LA104](https://openairdocs.org/ntsb/ANC90LA104.md): Cessna 170B · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Jun 30, 1990 · N8054A · Substantial damage
  > A power loss due to a fatigue failure of the #5 exhaust rocker arm.
- [NTSB ANC87LA066](https://openairdocs.org/ntsb/ANC87LA066.md): Cessna 170B · Kenai, AK · Accident · Serious injuries · Limited investigation · Final report · May 6, 1987 · N2754D · Substantial damage
  > The pilot stated during a low level flight above the trees, the aircraft started to vibrate. A few seconds later the propeller completely separated from the aircraft. The propeller was not located in the wooded area. The propeller separated from the aircraft…
- [NTSB ANC86LA103](https://openairdocs.org/ntsb/ANC86LA103.md): Cessna 170B · Tekanika River, AK · Accident · No injuries · Limited investigation · Final report · Jul 7, 1986 · N3162B · Substantial damage
  > The acft nosed over during the forced landing which followed a total loss of pwr. The plt reported he noted a decrease in oil pressure during cruise flt just prior to the pwr loss. Examination of the acft eng revealed that the #6 cylinder push rod had failed.

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2072306', '2072307')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 351))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=2072306&occurrence=351

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