# NTSB UNK64X2757: Bell 47G2, N2820B, 30 Mi Se Wall, SD, July 11, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 11, 1964
- Place: 30 Mi Se Wall, SD · 30 MI SE WALL, SD
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 26, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183561
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2757
- Page: https://openairdocs.org/ntsb/UNK64X2757

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0317  64/7/11    30 MI SE WALL S D   BELL 47G2           CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 27, 603
        TIME - 1430                    N2820B              PX-  0  0  0  OTHER                     TOTAL HOURS, 27 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: HOVERING
           COLLIDED WITH: FENCE,FENCEPOSTS                          IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: TAIL ROTOR PITCH CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- SIGHTSEEING
```

## Aircraft

- Registration: [N2820B](https://openairdocs.org/deregistered/N2820B-1993-12-10), registration cancelled 1993-12-10, S/N 1488 (OpenAirDocs)
- Reported make and model: BELL 47G2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N2820B (2)

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 FTW70FRG32](https://openairdocs.org/ntsb/FTW70FRG32), Mar 31, 1970: Bell 47G-2 (N2820B), Zapata, TX, substantial damage
- [NTSB MKC67A0003](https://openairdocs.org/ntsb/MKC67A0003), Jul 15, 1966: Bell 47G-2 (N2820B), St.Paul, MN, destroyed, 1 fatal

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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