# NTSB investigations: Sikorsky S-55B

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 WPR24LA173](https://openairdocs.org/ntsb/WPR24LA173.md): Sikorsky S-55QT · Benton City, WA · Accident · No injuries · Class 4 · Limited · Final report · Jun 3, 2024 · N2302F · Substantial damage
  > The pilot’s failure to maintain clearance from power lines during a low altitude operation.
- [NTSB ERA13LA018](https://openairdocs.org/ntsb/ERA13LA018.md): Sikorsky S-55B · Yorktown, NY · Accident · No injuries · Limited investigation · Final report · Oct 12, 2012 · N443FD · Substantial damage
  > The pilot's improper decision to perform a downwind precautionary landing and the helicopter’s resultant settling with power and impact with terrain.
- [NTSB WPR11FA350](https://openairdocs.org/ntsb/WPR11FA350.md): Sikorsky S-55B · Chelan, WA · Accident · 1 fatal · Field investigation · Final report · Jul 25, 2011 · N5663 · Substantial damage
  > The pilot’s failure to maintain clearance from power lines while maneuvering at a low altitude.
- [NTSB ATL88DKG08](https://openairdocs.org/ntsb/ATL88DKG08.md): Sikorsky S-55B · Valdosta, GA · Accident · No injuries · Final report · Jun 16, 1988 · N6489 · Substantial damage
- [NTSB FTW87LA101](https://openairdocs.org/ntsb/FTW87LA101.md): Sikorsky S-55B · De Quincy, LA · Accident · Serious injuries · Limited investigation · Final report · Apr 23, 1987 · N414A · Substantial damage
  > The pilot experienced an engine surge followed by a complete loss of power during a swath run of a tree spraying ag operation. The helicopter was over a densely wooded area and autorotated into trees. The owner was aware of a carburetor problem and had…
- [NTSB DEN84LA230](https://openairdocs.org/ntsb/DEN84LA230.md): Sikorsky S-55B · Richey, MT · Accident · No injuries · Limited investigation · Final report · Jul 20, 1984 · N24111 · Substantial damage
  > The pilot stated that he landed in a pasture where he intended to refuel. During the landing roll, one of the wheels dropped into a hole, causing the main rotor blade to flex downward and severe the tailboom.
- [NTSB CHI82DA150](https://openairdocs.org/ntsb/CHI82DA150.md): Sikorsky S-55B · Otsego, OH · Accident · No injuries · Final report · May 4, 1982 · N16861 · Substantial damage
  > The pilot was spreading fertilizer by using external buckets. As he was unhooking a bucket, the engine lost power. He did a hovering autorotation, but the helicopter settled on a bucket, tipped over and allowed the main rotor blades to hit the ground. An…
- [NTSB MIA80FLD93](https://openairdocs.org/ntsb/MIA80FLD93.md): Sikorsky S-55B · Titusville, FL · Accident · Minor injuries · Closed · Aug 27, 1980 · N31611 · Substantial damage
- [NTSB CHI80FEK18](https://openairdocs.org/ntsb/CHI80FEK18.md): Sikorsky S-55B · Rushville, OH · Accident · No injuries · Closed · Jul 2, 1980 · N16861 · Substantial damage
- [NTSB MIA79FLD24](https://openairdocs.org/ntsb/MIA79FLD24.md): Sikorsky S-55B · Haines, FL · Accident · No injuries · Closed · Dec 19, 1978 · N6489 · Substantial damage
- [NTSB OAK78FVM31](https://openairdocs.org/ntsb/OAK78FVM31.md): Sikorsky S-55B · Scotts Valley, CA · Accident · Minor injuries · Closed · Jun 11, 1978 · N865RL · Destroyed
- [NTSB FTW76FPM01](https://openairdocs.org/ntsb/FTW76FPM01-201343.md): Sikorsky S-55B · Tulsa, OK · Accident · No injuries · Closed · Oct 1, 1976 · N2305 · Substantial damage
- [NTSB LAX76AL097](https://openairdocs.org/ntsb/LAX76AL097.md): Sikorsky S-55B · San Bernardino, CA · Accident · 4 fatal · Closed · Sep 22, 1976 · N9389 · Destroyed
- [NTSB IAD76AI047](https://openairdocs.org/ntsb/IAD76AI047.md): Sikorsky S-55 · California, MD · Accident · 1 fatal · Closed · Jan 9, 1976 · N3498 · Substantial damage
- [NTSB FTW76FPG34](https://openairdocs.org/ntsb/FTW76FPG34.md): Sikorsky S-55B · Little Rock, AR · Accident · No injuries · Closed · Nov 18, 1975 · N15187 · Substantial damage
- [NTSB MKC76DER29](https://openairdocs.org/ntsb/MKC76DER29.md): Sikorsky S-55B · Eden Prairie, MN · Accident · No injuries · Closed · Sep 26, 1975 · N17376 · Substantial damage
- [NTSB MKC76AK003](https://openairdocs.org/ntsb/MKC76AK003.md): Sikorsky S-55B · Pine Ridge, SD · Accident · Minor injuries · Closed · Jul 4, 1975 · N111RS · Substantial damage
- [NTSB OAK74FJA21](https://openairdocs.org/ntsb/OAK74FJA21.md): Sikorsky S55B · Kaneohe, HI · Accident · No injuries · Closed · May 7, 1974 · N865RL · Substantial damage
- [NTSB SEA74FYC40](https://openairdocs.org/ntsb/SEA74FYC40.md): Sikorsky S-55B · Corvallis, OR · Accident · No injuries · Closed · Mar 22, 1974 · N5663 · Substantial damage
- [NTSB NYC74AN032](https://openairdocs.org/ntsb/NYC74AN032-201613.md): Sikorsky S-55B · Nemacolin, PA · Accident · 1 fatal · Closed · Oct 9, 1973 · N414A · Destroyed
- [NTSB ANC72AA009](https://openairdocs.org/ntsb/ANC72AA009.md): Sikorsky S-55B · Valdez, AK · Accident · 2 fatal · Closed · Aug 12, 1971 · N5096V · Destroyed
- [NTSB ANC71AA018](https://openairdocs.org/ntsb/ANC71AA018.md): Sikorsky S-55B · Valdez, AK · Accident · 1 fatal · Closed · Aug 26, 1970 · N455Z
- [NTSB IAD71AI001](https://openairdocs.org/ntsb/IAD71AI001.md): Sikorsky S-55B · Davis, WV · Accident · No injuries · Closed · Jun 30, 1970 · N414A · Substantial damage
- [NTSB NYC70DHA10](https://openairdocs.org/ntsb/NYC70DHA10.md): Sikorsky S-55B · Scotrun, PA · Accident · Minor injuries · Closed · May 1, 1970 · N16861 · Destroyed
- [NTSB ANC68A0022](https://openairdocs.org/ntsb/ANC68A0022.md): Sikorsky S-55B · Pt.Woronzoff, AK · Accident · No injuries · Closed · Oct 4, 1967 · N5096V · Substantial damage
- [NTSB NYC68A0038](https://openairdocs.org/ntsb/NYC68A0038.md): Sikorsky S-55B · Pittsfield, PA · Accident · No injuries · Closed · Sep 1, 1967 · N6872C · Destroyed
- [NTSB ANC67A0035](https://openairdocs.org/ntsb/ANC67A0035.md): Sikorsky S-55B · Clear, AK · Accident · No injuries · Closed · Oct 8, 1966 · N5096V · Substantial damage
- [NTSB UNK64X3246](https://openairdocs.org/ntsb/UNK64X3246.md): Sikorsky S55 · Keene Valley, NY · Accident · No injuries · Closed · Aug 6, 1964 · N6872C · Substantial damage
- [NTSB UNK64X2139](https://openairdocs.org/ntsb/UNK64X2139.md): Sikorsky S55 · Holopaw, FL · Accident · No injuries · Closed · Jun 5, 1964 · N873Z · Substantial damage

## 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 ('8141604'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=8141604

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