# NTSB CHI81FER59: Hiller Acft UH-12E, N5594N, Glyndon, MN, July 20, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 20, 1981
- Place: Glyndon, MN · GLYNDON, MN
- Location: 46.8710° N, 96.5784° W: Placed by OpenAirDocs: center of Glyndon, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.8710&lon=-96.5784&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 22, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 125059
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI81FER59
- Page: https://openairdocs.org/ntsb/CHI81FER59

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1714  81/7/20    GLYNDON,MN          HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1245                    N5594N              PX-  0  0  0  AERIAL APPLICATION        AGE 34, 9030 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            286 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          GLYNDON,MN                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: SWATH RUN
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: OTHER
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - WATER IN FUEL
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  900                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     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 - INSTALLED                             CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  900                 SWATH RUN-HOW FLOWN - DOWNWIND
        REMARKS- WTR FND IN FUEL TNK MOUNTED ON SVC TRUCK,CRACK IN WELD ON TOP OF TNK ALLOWED WTR TO ENTER.
```

## Aircraft

- Registration: [N5594N](https://openairdocs.org/deregistered/N5594N-1989-07-27), registration cancelled 1989-07-27, S/N 1453 (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 19810720043379A](https://openairdocs.org/incident/19810720043379A), Jul 20, 1981: Hiller UH12E, Glyndon, MN, Substantial damage. Engine quit during spray run. Hard, forced landing cut off tail boom. Found water in fuel and fuel truck.

## Other investigations on N5594N (3)

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 DEN89DTM02](https://openairdocs.org/ntsb/DEN89DTM02), May 13, 1989: Hiller UH-12E (N5594N), Mack, CO, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN PROPER ALTITUDE DURING A SWATH RUN.
- [NTSB CHI82DA301](https://openairdocs.org/ntsb/CHI82DA301), Aug 10, 1982: Hiller 12E (N5594N), Palisade, MN, substantial damage
- [NTSB DEN81FTG01](https://openairdocs.org/ntsb/DEN81FTG01), Oct 3, 1980: Hiller UH12E (N5594N), Argusville, ND, 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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