# NTSB FTW81FA045: Bell 47D1, N9736Z, Roanoke, TX, February 10, 1981

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: February 10, 1981
- Place: Roanoke, TX · ROANOKE, TX
- Location: 33.0147° N, 97.2290° W: Placed by OpenAirDocs: center of Roanoke, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.0147&lon=-97.2290&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed, report June 17, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 126507
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW81FA045
- Page: https://openairdocs.org/ntsb/FTW81FA045

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0875  81/2/10    ROANOKE,TX          BELL 47D1           CR-  0  0  1  MISCELLANEOUS             ATP,FLIGHT INSTR., AGE
        TIME - 1615                    N9736Z              PX-  0  0  2  TEST                      31, 6625 TOTAL HOURS, 525
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - AERO VALLEY
        DEPARTURE POINT             INTENDED DESTINATION
          ROANOKE,TX                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           TAKEOFF: VERTICAL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY LOADED AIRCRAFT-WEIGHT-AND/OR C.G.
        REMARKS- EXCEEDED FORWARD CG BY APPROX 1.8IN.
```

## Aircraft

- Registration: [N9736Z](https://openairdocs.org/deregistered/N9736Z-2014-11-26), registration cancelled 2014-11-26, S/N 15, built 1947 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Aero Valley

## Other investigations on N9736Z (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 FTW77FRA13](https://openairdocs.org/ntsb/FTW77FRA13), Feb 27, 1977: Bell 47D1 (N9736Z), Houston, TX, 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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