# NTSB MIA72DLA26: Bell 47D1, N3109G, Milton, FL, December 17, 1971

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: December 17, 1971
- Place: Milton, FL · MILTON, FL
- Location: 30.6296° N, 87.0514° W: Placed by OpenAirDocs: center of Milton, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=30.6296&lon=-87.0514&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report August 24, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 164836
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA72DLA26
- Page: https://openairdocs.org/ntsb/MIA72DLA26

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4499  71/12/17   MILTON,FLA          BELL 47D1           CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 45, 9281
        TIME - 1650                    N3109G              PX-  0  0  0  MAPPING/PHOTO             TOTAL HOURS, 206 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PENSACOLA,FLA               CRESTVIEW,FLA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- NR 5 CON ROD FAILED.MFG SVCE LTR 70-1,REV 1 REC ROD BOLT RPLCMNT AT OVRHAUL.ENG 317HRS SMOH.
```

## Aircraft

- Registration: [N3109G](https://openairdocs.org/deregistered/N3109G-2013-07-30), registration cancelled 2013-07-30, S/N 407 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1G](https://openairdocs.org/model/bell-47d1g) (registry code 1180804) (OpenAirDocs)
- Registry engine: [Franklin 6V-335 series](https://openairdocs.org/engine/franklin-6v-335-series) (registry code 27039, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N3109G (7)

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 BFO92LA102](https://openairdocs.org/ntsb/BFO92LA102), Jul 15, 1992: Bell 47G (N3109G), Southwick, MA, substantial damage. Probable cause: IMPROPER ADJUSTMENT OF THE STABILIZER CONTROL SYSTEM BY MAINTENANCE PERSONNEL.
- [NTSB MIA80FA112](https://openairdocs.org/ntsb/MIA80FA112), Sep 22, 1980: Cambell 47-D1G (N3109G), Panama City, FL, destroyed, 1 fatal
- [NTSB MIA77DLA38](https://openairdocs.org/ntsb/MIA77DLA38), Jul 18, 1977: Bell 47D1 (N3109G), Panama City, FL, substantial damage
- [NTSB MIA77DLA37](https://openairdocs.org/ntsb/MIA77DLA37), Jun 17, 1977: Bell 47D1G (N3109G), Panama Cy Bch, FL, substantial damage
- [NTSB MIA76DKJ53](https://openairdocs.org/ntsb/MIA76DKJ53), Mar 6, 1976: Bell 47D1 (N3109G), Enterprise, AL, substantial damage
- [NTSB MIA75FKJ54](https://openairdocs.org/ntsb/MIA75FKJ54), Apr 7, 1975: Bell 47D1-G (N3109G), Abbeville, AL, destroyed
- [NTSB MIA66A0006](https://openairdocs.org/ntsb/MIA66A0006-201538), Jul 11, 1965: Bell 47-D1 (N3109G), Panama City, FL, 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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