# NTSB FTW76FPA15: Bell 47D-1, N5226, Irving, TX, December 7, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 7, 1975
- Place: Irving, TX · IRVING, TX
- Location: 32.8140° N, 96.9489° W: Placed by OpenAirDocs: center of Irving, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.8140&lon=-96.9489&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 13, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 151708
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW76FPA15
- Page: https://openairdocs.org/ntsb/FTW76FPA15

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3701   75/12/7   IRVING,TX           BELL 47D-1          CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1515                    N5226               PX-  0  0  0  DUAL                      AGE 35, 8597 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            852 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          DALLAS,TX                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           DUAL STUDENT - MISJUDGED SPEED AND ALTITUDE
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
           MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND
        REMARKS- PRACTICE AUTOROTATION.
```

## Aircraft

- Registration: [N5226](https://openairdocs.org/deregistered/N5226-2014-10-27), registration cancelled 2014-10-27, S/N 37, built 1950 (OpenAirDocs)
- Reported make and model: BELL 47D-1
- 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

## 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 19751207038429A](https://openairdocs.org/incident/19751207038429A), Dec 7, 1975: Bell 47D1, Irving, TX, Substantial damage. Practice autorotation.

## Other investigations on N5226 (4)

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 FTW02LA044](https://openairdocs.org/ntsb/FTW02LA044), Dec 1, 2001: Bell 47G (N5226), Ardmore, OK, substantial damage. Probable cause: the flight instructor's selection of an unsuitable area for practicing a full touchdown autorotation, which resulted in a nose over. A contributing factor was the soft ground.
- [NTSB FTW96LA192](https://openairdocs.org/ntsb/FTW96LA192), Apr 26, 1996: Bell 47D1 (N5226), Ardmore, OK, substantial damage. Probable cause: the student's inadvertent dynamic rollover, and inadequate supervision by the flight instructor.
- [NTSB FTW85LA074](https://openairdocs.org/ntsb/FTW85LA074), Dec 7, 1984: Bell 47D1 (N5226), Ardmore, OK, substantial damage
- [NTSB LAX75FUA04](https://openairdocs.org/ntsb/LAX75FUA04), Jul 28, 1974: Bell 47D-1 (N5226), Seal Beach, 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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