# NTSB OAK76FVG27: Bell 206B, N59549, Alder Springs, CA, October 4, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 4, 1975
- Place: Alder Springs, CA · ALDER SPRINGS, CA
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report January 16, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 151462
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK76FVG27
- Page: https://openairdocs.org/ntsb/OAK76FVG27

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3727   75/10/4   ALDER SPRINGS,CA    BELL 206B           CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 32, 3600
        TIME - 1530                    N59549              PX-  0  0  3  ASSOC FIRE CTL ACTIVITY   TOTAL HOURS, 400 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ALDER SPRINGS
        DEPARTURE POINT             INTENDED DESTINATION
          ALDER SPRINGS,CA            LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: POWER-ON LANDING
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - FUEL SYSTEM: FUEL CONTROL
           MISCELLANEOUS ACTS,CONDITIONS - FUEL CONTAMINATION-EXCLUSIVE OF WATER IN FUEL
           MISCELLANEOUS - FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS
        FACTOR(S)
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: OTHER
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        REMARKS- FUEL CONTROL UNIT CONTAINED FINE METAL PARTICLES.SURROUNDING AREA UNDER CONSTRUCTION.
```

## Aircraft

- Registration: [N59549](https://openairdocs.org/deregistered/N59549-2012-09-27), registration cancelled 2012-09-27, S/N 1387, built 1974 (OpenAirDocs)
- Reported make and model: BELL 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (registry code 1181511) (OpenAirDocs)
- Registry engine: [Allison 250 SER 400HP](https://openairdocs.org/engine/allison-250-ser-400hp) (registry code 03013, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: Alder Springs

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19751004039109A](https://openairdocs.org/incident/19751004039109A), Oct 4, 1975: Bell 206B, Alder Springs, CA, Substantial damage. Fuel control unit contained fine metal particles. Surrounding area under construction.

## Other investigations on N59549 (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX85FA101](https://openairdocs.org/ntsb/LAX85FA101), Jan 8, 1985: Bell 206B (N59549), Trimmer, CA, substantial damage

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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