# NTSB MKC77FER39: Hiller Acft UH-12E, N155HA, Big Lake, MN, May 2, 1977

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: May 2, 1977
- Place: Big Lake, MN · BIG LAKE, MN
- Location: 45.3424° N, 93.7430° W: Placed by OpenAirDocs: center of Big Lake, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.3424&lon=-93.7430&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report August 3, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 157191
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC77FER39
- Page: https://openairdocs.org/ntsb/MKC77FER39

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1340   77/5/2  NR.BIG LAKE,MN        HILLER ACFT UH-12E  CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 38, 3179
        TIME - 0700                    N155HA              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 25 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         BIG LAKE,MN                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: PULLUP FROM SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - DEFOLIATION (LIQUID)
          KIND OF CROP - POTATOES                                  TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  950                 SWATH RUN-HOW FLOWN - WIND CALM
```

## Aircraft

- Registration: [N155HA](https://openairdocs.org/deregistered/N155HA-1982-10-02), registration cancelled 1982-10-02, S/N HA3055 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-12E
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (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 19770502010949A](https://openairdocs.org/incident/19770502010949A), May 2, 1977: Hiller UH12E, Big Lake, MN, Substantial damage

## Other investigations on N155HA (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 LAX80DJA12](https://openairdocs.org/ntsb/LAX80DJA12), Feb 23, 1980: Hiller Acft UH-12E (N155HA), Waimea Kauai, HI, destroyed
- [NTSB OAK79FJA12](https://openairdocs.org/ntsb/OAK79FJA12), May 23, 1979: Hiller Acft UH-12E (N155HA), Lihue, HI, 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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