# NTSB SEA82FYM11: Hiller UH-12E, N59366, Mount Angle, OR, March 8, 1982

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: March 8, 1982, 12:30 local (20:30 UTC)
- Place: Mount Angle, OR
- Location: 45.0695° N, 122.7972° W: Placed by OpenAirDocs: center of Mount Angel, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.0695&lon=-122.7972&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured; on the ground: 1 minor
- Status: Completed, report March 8, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71784
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA82FYM11
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71784/pdf
- Page: https://openairdocs.org/ntsb/SEA82FYM11

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with object, landing - flare/touchdown
  - object - vehicle (contributing factor)
  - clearance - misjudged, pilot in command (cause)

## Analysis

THE AIRCRAFT WAS BEING USED ON AN EXTERNAL LOAD OPERATION. ON HIS FOURTH LOAD, THE PILOT WAS TO TRANSPORT A 1190 LB ELECTRIC PUMP AND FAN FROM THE BACK OF A PICKUP TRUCK. WHILE PREPARING TO LIFT THE LOAD, THE PILOT WAS NOT SATISFIED WITH ITS POSITION. HE RELEASED THE EXTERNAL LOAD LINE FROM THE BOTTOM OF THE HELICOPTER, MOVED THE HELICOPTER TO THE RIGHT, AND LANDED NEAR THE PICKUP TRUCK. JUST PRIOR TO LANDING, THE MAIN ROTOR BLADES STRUCK THE LOAD AND KNOCKED IT OUT OF THE TRUCK. THE GROUND HOOKUP PERSON RECEIVED MINOR INJURIES FROM FLYING DEBRIS.

## Aircraft

- Registration: [N59366](https://openairdocs.org/deregistered/N59366-2013-07-19), registration cancelled 2013-07-19, S/N 1069, built 1958 (OpenAirDocs)
- Reported make and model: HILLER UH-12E
- Registry model: [Hiller UH-12D](https://openairdocs.org/model/hiller-uh-12d) (registry code 4360118) (OpenAirDocs)
- Registry engine: [Allison 250 series](https://openairdocs.org/engine/allison-250-series) (registry code 03014, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Serial number: 1069
- Airframe hours: 10835
- Engines: ALLISON 250 300 horsepower turbo shaft
- Damage: Destroyed
- Flight: Part 133
- Operator: D J Cobb
- Registered owner: D J Cobb
- Departed: MOUNT ANGLE, OR
- Destination: MOUNT ANGLE, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; commercial; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 8,287 total, 1,232 in this make and model, 5,812 as pilot in command, 67 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 330° at 3 knots
- Visibility: 5 statute miles
- Altimeter: 30.00 inHg

## 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 19820308002999A](https://openairdocs.org/incident/19820308002999A), Mar 8, 1982: Hiller UH12E, Mount Angel, OR, Substantial damage. Main rotors struck a pickup truck as the pilot was landing to check out sling load operation.

## Other investigations on N59366 (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 SEA94LA037](https://openairdocs.org/ntsb/SEA94LA037), Nov 26, 1993: Hiller UH-12D (N59366), Sublimity, OR, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN CLEARANCE FROM UNMARKED TRANSMISSION WIRES. FACTORS INCLUDE THE PILOT'S INADEQUATE VISUAL LOOKOUT, AND UNMARKED WIRES IN THE AREA OF OPERATION.
- [NTSB SEA80DYM55](https://openairdocs.org/ntsb/SEA80DYM55), Aug 19, 1980: Hiller Acft UH-12E (N59366), Tillamook, OR, 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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