# NTSB SEA84LA134: Hughes 369D, N5133U, Wrangell, AK, June 16, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 16, 1984, 12:05 local (19:05 UTC)
- Place: Wrangell, AK
- Coordinates: 57.050704, -132.619064 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=57.0507&lon=-132.6191&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39937
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA84LA134
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39937/pdf
- Page: https://openairdocs.org/ntsb/SEA84LA134

## Sequence of events

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

- On ground/water collision with object, standing - engine(s) operating
  - operation with known deficiencies in equipment - performed, pilot of other aircraft (cause)
  - directional control - not maintained, pilot of other aircraft

## Analysis

THE HELICOPTER WAS PARKED WITH THE ENG RUNNING WHEN IT WAS STRUCK BY ANOTHER ACFT, A BEECH C-45G. PRIOR TO THE COLLISION, THE HELICOPTER WAS AT A LOW RPM; THEREFORE, THE PLT WAS UNABLE TO MOVE THE HELICOPTER OUT OF THE WAY. THE BEECH ACFT WAS BEING TAXIED FROM AN FBO WITH NO INTENT FOR FLT. PRIOR TO TAXIING, A MECHANIC HAD EXAMINED THE BRAKES & TOLD THE PLT OF THE BEECH THAT THE RIGHT MAIN BRAKE PADS WERE COMPLETELY WORN & WERE IN NEED OF REPAIR. THE PERSON TAXIING THE BEECH LOST CONTROL, WHILE TAXIING, & ALLOWED THE ACFT TO RUN INTO THE HELICOPTER.

## Aircraft

- Registration: [N5133U](https://openairdocs.org/aircraft/N5133U), registered now, S/N 1102D, built 1982 (OpenAirDocs)
- Reported make and model: HUGHES 369D
- Registry model: [Hughes Helicopters HUGHES 369D](https://openairdocs.org/model/hughes-helicopters-hughes-369d) (registry code 4470706) (OpenAirDocs)
- Registry engine: [Allison 250-C20 series](https://openairdocs.org/engine/allison-250-c20-series) (registry code 03020, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Serial number: 1102D
- Airframe hours: 1107
- Engines: ALLISON 250-C20B 375 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Temsco Helicopters
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 15, 1984, 87 hours before
- Destination: PSG, PETERSBURG, AK
- Airport: WRG, Wrangell

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; private, commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 6,750 total, 6,600 as pilot in command, 60 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 60° at 8 knots
- Visibility: 25 statute miles
- Lowest ceiling: 8,000 ft broken
- Temperature: 54 °F, dew point 45 °F
- Altimeter: 30.00 inHg
- Observed at: PSG, 25 nm away

## 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 19840616045899A](https://openairdocs.org/incident/19840616045899A), Jun 16, 1984: Hughes 369D, Wrangell, AK, Substantial damage. A twin Beech taxiing from repair shop with bad brakes hit the helicopter as it awaited takeoff with idling rotors.

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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