# NTSB MKC75DER73: Bell 47G2, N108DA, Rosemount, MN, June 3, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 3, 1975
- Place: Rosemount, MN · ROSEMOUNT, MN
- Location: 44.7394° N, 93.1258° W: Placed by OpenAirDocs: center of Rosemount, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.7394&lon=-93.1258&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 21, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148897
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC75DER73
- Page: https://openairdocs.org/ntsb/MKC75DER73

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1347   75/6/3    ROSEMOUNT,MN        BELL 47G2           CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 27, 3982
        TIME - 0800                    N108DA              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 52 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          ROSEMOUNT,MN                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: PROCEDURE TURNAROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - LOAD NOT JETTISONED
           MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  315                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - AFT OF PILOT                      TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  950                 PROCEDURE TURNAROUND - THIRD 1/3 TURN
        REMARKS- RPM DROPPED BLO 3000 IN A TURN.
```

## Aircraft

- Registration: [N108DA](https://openairdocs.org/deregistered/N108DA-2020-12-05), registration cancelled 2020-12-05, S/N 2474, built 1960 (OpenAirDocs)
- Reported make and model: BELL 47G2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19750603014469A](https://openairdocs.org/incident/19750603014469A), Jun 3, 1975: Bell 47G2, Rosemount, MN, Substantial damage. RPM dropped blo 3000 in a turn.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.