# NTSB IAD76II014: Bell 47G-2, N6755D, Pigeon Forge, TN, August 29, 1975

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: August 29, 1975
- Place: Pigeon Forge, TN · PIGEON FORGE, TN
- Location: 35.7980° N, 83.5638° W: Placed by OpenAirDocs: center of Pigeon Forge, TN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.7980&lon=-83.5638&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report October 8, 1975
- Report: Brief approved by the director
- Safety recommendations: Yes
- NTSB case key (mKey): 79428
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD76II014
- Page: https://openairdocs.org/ntsb/IAD76II014

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0034  75/8/29    PIGEON FORGE,TN     BELL 47G-2          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 23, 3880
        TIME - 0945                    N6755D              PX-  0  0  2  OTHER                     TOTAL HOURS, 1800 IN
                                       DAMAGE-MINOR        OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - PINE GROVE HELI
        DEPARTURE POINT             INTENDED DESTINATION
          PIGEON FORGE,TN             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
           ROTORCRAFT - ROTOR ASSEMBLIES: TAIL ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        REMARKS- BOLT P/N 47-64I-052-3 FAILED.DRG MFG TOOL MARKS NOT POLISHED IN ACCORD WITH MFG SPECIFICATION.
```

## Aircraft

- Registration: [N6755D](https://openairdocs.org/deregistered/N6755D-2013-07-10), registration cancelled 2013-07-10, S/N 2246, built 1959 (OpenAirDocs)
- Reported make and model: BELL 47G-2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (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: Minor damage
- Airport: Pine Grove Heli

## Other investigations on N6755D (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB IAD77DA011](https://openairdocs.org/ntsb/IAD77DA011), Nov 6, 1976: Bell 47G-2 (N6755D), Pigeon Forge, TN, destroyed, 1 fatal

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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