LAX86LA277

NTSB accident investigation · Hiller UH-12C · Garberville, CA · July 2, 1986

Accident · No injuriesLimited investigationFinal report
Date
July 2, 1986, 15:30 local (22:30 UTC)
Place
Garberville, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N26186Hiller UH-12C
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860702029759A
Case key
25203

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 powerCruise - normal
Rotor drive system,clutch assembly - failure,partialCause
Engine assembly,crankcase - leakFactor
Fluid,oil - leakFactor
Operation with known deficiencies in equipment - attemptedPilot in commandCause
Lack of familiarity with aircraftPilot in commandFactor
Forced landingDescent - emergency
In flight collision with terrain/waterLanding - flare/touchdown
Terrain condition - rough/unevenFactor

Analysis

The student plt had just taken off on a training x-country flt when the main rotor tachometer needle decreased below the engine tachometer needle. He turned the helicopter to return to the arpt but was unable to maintain altitude and landed hard in rough terrain. After the accident the student plt stated that he had observed oil leaking in the vicinity of the centrifugal, dry clutch during this and previous prefight inspections.

Aircraft

Registration
N26186
Reported as
Hiller UH-12C
Category
Helicopter
Serial number
AN002
Airframe hours
1,799
Engine
Franklin VO-335-5D, 210 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Dane A. Peterson
Registered owner
Petersen, Dane A.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 27, 1986 · 48 hours before
Departed
016 · Garberville, CA
Destination
028
Flight plan
VFR
Airport
Garberville

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
37
Certificate
Student
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
39 total · 39 in this make and model · 12 as pilot in command · 39 in the last 90 days · 19 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 5 knots, gusting 5
Visibility
25 statute miles
Lowest ceiling
None
Temperature
84 °F

FAA reports on this event · 1

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