# NTSB SEA77FYP29: Bell 47G3B1, N73919, Pomeroy, WA, April 26, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 26, 1977
- Place: Pomeroy, WA · POMEROY, WA
- Location: 46.4738° N, 117.5965° W: Placed by OpenAirDocs: center of Pomeroy, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.4738&lon=-117.5965&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 30, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 147329
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA77FYP29
- Page: https://openairdocs.org/ntsb/SEA77FYP29

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2785  77/4/26    POMEROY,WA          BELL 47G3B1         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1900                    N73919              PX-  0  0  0  AERIAL SURVEY             AGE 32, 6433 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            1121 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          POMEROY,WA                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: OTHER
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: ROLL-ON/RUN-ON
        PROBABLE CAUSE(S)
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           TERRAIN - ROUGH/UNEVEN
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING OFF AIRPORT
                                  PITCH CONTROL PROBLEM
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- CTL DIFFICULTY,RETREATING BLADE STALL AT LOW SPD.SKID COLLAPSED HI SPD RUN-ON.INT EPOXY SEALS SEP.
```

## Aircraft

- Registration: [N73919](https://openairdocs.org/deregistered/N73919-2013-02-21), registration cancelled 2013-02-21, S/N 2807, built 1963 (OpenAirDocs)
- Reported make and model: BELL 47G3B1
- Registry model: [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1) (registry code 1181028) (OpenAirDocs)
- Registry engine: [Lycoming TVO-435-GIA](https://openairdocs.org/engine/lycoming-tvo-435-gia) (registry code 41526, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## 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 19770426012039A](https://openairdocs.org/incident/19770426012039A), Apr 26, 1977: Bell 47G3B1, Pomeroy, WA, Substantial damage. Ctl difficulty,retreating blade stall at low spd. Skid collapsed hi spd run-on. Int epoxy seals sep.

## Other investigations on N73919 (2)

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 SEA67A0046](https://openairdocs.org/ntsb/SEA67A0046), Jan 4, 1967: Bell 47G-3B (N73919), Pomeroy, WA, substantial damage
- [NTSB UNK64X0270](https://openairdocs.org/ntsb/UNK64X0270), Jan 18, 1964: Bell 47G3B1 (N73919), Shell Beachf, 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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