# NTSB FTW72FPA09: Bell 47D1, N7735, Carrollton, TX, October 24, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 24, 1971
- Place: Carrollton, TX · CARROLLTON, TX
- Location: 32.9537° N, 96.8903° W: Placed by OpenAirDocs: center of Carrollton, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.9537&lon=-96.8903&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 12, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 163379
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW72FPA09
- Page: https://openairdocs.org/ntsb/FTW72FPA09

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3289  71/10/24   CARROLLTON,TEX      BELL 47D1           CR-  0  0  1  INSTRUCTIONAL             NO CERTIFICATE, AGE 40,
        TIME - 1630                    N7735               PX-  0  0  1  SOLO                      10 TOTAL HOURS, ALL IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - ADDISON
        DEPARTURE POINT             INTENDED DESTINATION
          CARROLLTON,TEX              LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        REMARKS- M/R BLDS FLEXED DN ON LDG,CUT TAIL BOOM OFF.
```

## Aircraft

- Registration: [N7735](https://openairdocs.org/deregistered/N7735-2013-02-26), registration cancelled 2013-02-26, S/N K8117 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell - K Copter 47D1](https://openairdocs.org/model/bell-k-copter-47d1) (registry code 1180843) (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: Addison

## Other investigations on N7735 (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 MKC88FA054](https://openairdocs.org/ntsb/MKC88FA054), Feb 21, 1988: Bell 47D1 (N7735), Nixa, MO, destroyed, 1 fatal
- [NTSB MKC81DCQ43](https://openairdocs.org/ntsb/MKC81DCQ43), Jun 20, 1981: Bell 47G-2 (N7735), Sublette, KS, substantial damage
- [NTSB MKC75FCQ52](https://openairdocs.org/ntsb/MKC75FCQ52), Jun 12, 1975: Bell 47D1 (N7735), Holcomb, KS, substantial damage
- [NTSB FTW69F0497](https://openairdocs.org/ntsb/FTW69F0497), May 13, 1969: Bell 47D1 (N7735), Powell, 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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