SEA85LA031

NTSB accident investigation · Hiller UH-12ET · Hoquiam, WA · December 18, 1984

Accident · Minor injuriesLimited investigationFinal report
Date
December 18, 1984, 11:00 local (19:00 UTC)
Place
Hoquiam, WA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N100LMHiller UH-12ET
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19841218075289A
Case key
40097

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(total) - nonmechanicalCruise - normal
Reason for occurrence undeterminedCause
Forced landingDescent - emergency
Autorotation - attemptedPilot in command
In flight collision with terrain/waterLanding - flare/touchdown
Terrain condition - none suitableFactor
Terrain condition - mountainous/hillyFactor
Terrain condition - high vegetationFactor

Analysis

Plt reported that while in normal cruise flight, a total loss of power occurred. Autorotation was effected in mountainous, wooded terrain. Examination of the engine showed continuity and freedom of rotation. Examination of the fuel system disclosed no discrepancis.

Aircraft

Registration
N100LM
Reported as
Hiller UH-12ET
Category
Helicopter
Serial number
1583
Airframe hours
2,701
Engine
Allison 250C-20, 305 horsepower, turbo shaft
Damage
Substantial damage
Flight
Positioning · Part 91
Registered owner
Airlift Helicopters
Airworthiness certificate
Standard, Normal
Departed
Elma
Destination
Crane Creek, WA

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
43
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,000 total · 3,500 in this make and model · 100 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 5 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
34 °F, dew point 18 °F
Altimeter
30.00 inHg
Observed at
HQM

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N100LM · 2

Matched to the same aircraft by N-number and date.