# NTSB FTW82DRG07: Bell 47G-4A, N62446, Telegraph, TX, November 2, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 2, 1981
- Place: Telegraph, TX · TELEGRAPH, TX
- Location: 30.3274° N, 99.9062° W: Placed by OpenAirDocs: center of Telegraph, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=30.3274&lon=-99.9062&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report December 28, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 123381
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW82DRG07
- Page: https://openairdocs.org/ntsb/FTW82DRG07

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2588   81/11/2 NR.TELEGRAPH,TX       BELL 47G-4A         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 35, 662
        TIME - 1330                    N62446              PX-  0  0  2  AERIAL SURVEY             TOTAL HOURS, 246 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         TELEGRAPH,TX                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND
```

## Aircraft

- Registration: [N62446](https://openairdocs.org/deregistered/N62446-2003-01-16), registration cancelled 2003-01-16, S/N 7655, built 1968 (OpenAirDocs)
- Reported make and model: BELL 47G-4A
- Registry model: [Bell 47G-4A](https://openairdocs.org/model/bell-47g-4a) (registry code 1181031) (OpenAirDocs)
- Registry engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41534, reciprocating) (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 19811102071589A](https://openairdocs.org/incident/19811102071589A), Nov 2, 1981: Bell 47G4A, Telegraph, TX, Substantial damage. Helicopter entered prestall vibration during low altitude hover. Lost control. Impact cut tail boom broke skids.

## Other investigations on N62446 (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 FTW02LA186](https://openairdocs.org/ntsb/FTW02LA186), Jun 23, 2002: Bell 47G4 (N62446), Grand Lake, LA, destroyed. Probable cause: the pilot's inability to control the helicopter in a hover due to the restricted movement of the cyclic for undetermined reasons.

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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