# NTSB MKC72FTK27: Bell 47G-5, N7870S, Pierre, SD, April 6, 1972

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 6, 1972
- Place: Pierre, SD · PIERRE, SD
- Location: 44.3752° N, 100.3200° W: Placed by OpenAirDocs: center of Pierre, SD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.3752&lon=-100.3200&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report December 11, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 165702
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC72FTK27
- Page: https://openairdocs.org/ntsb/MKC72FTK27

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0925   72/4/6    PIERRE,S DAK        BELL 47G-5          CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 0930                    N7870S              PX-  0  0  1  BUSINESS                  AGE 42, 4378 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            3378 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          WESSINGTON,S DAK            KEYSTONE,S DAK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR COLLAPSED                                           LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
        REMARKS- PIVOT BOLT P/N-AN-174-21,NUT P/N MS17825-4,WASHER P/N AN-960-416 MISSING.CYCLIC CONTROL LOST.
```

## Aircraft

- Registration: [N7870S](https://openairdocs.org/deregistered/N7870S-1989-11-16), registration cancelled 1989-11-16, S/N 7864 (OpenAirDocs)
- Reported make and model: BELL 47G-5
- Registry model: [Bell 47G-5](https://openairdocs.org/model/bell-47g-5) (registry code 1181032) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N7870S (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 MKC69F0078](https://openairdocs.org/ntsb/MKC69F0078), Aug 26, 1968: Bell 47G-5 (N7870S), Glencoe, MN, 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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