SEA83FYM02

NTSB accident investigation · Enstrom 280C · North Plains, OR · December 17, 1982

Accident · FatalFinal report
Date
December 17, 1982, 05:45 local (13:45 UTC)
Place
North Plains, OR
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N5686ZEnstrom 280C
Weather
Visual (VMC) · Night/dark
Status
Completed · report December 17, 1983
Report
Approved by Office Director
FAA report
19821217064399A
Case key
72044

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.

In flight encounter with weatherCruise
Preflight planning/preparation - inadequatePilot in commandFactor
Light condition - dark nightFactor
Weather condition - low ceilingFactor
Weather condition - fogFactor
Weather condition - rainFactor
Weather condition - turbulenceFactor
Vfr flight into imc - continuedPilot in commandCause
In flight collision with objectManeuvering - turn to reverse direction
Object - tree(s)Factor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

At about 0530 PST, the pilot departed from his home at ridge field, WA on a flight to hillsboro, OR. According to the pilot's instructor, the normal route used for this trip would been to proceed on a southerly heading to cornelius pass, go through the pass, then continue to hillsboro. The helicoptercrashed about 2.5 mi northwest of cornelius pass. The 0548 PST hillsboro wx was 1400 ptly obscd, 3600 ovc, vis 7 mi, temp 45, dew pt 43, wind 170 deg at 10 gs'tg 30 KTS. The elevation at hillsboro was 204 ft, the crash site was at about 900 ft. the pilot's instructor was searching the area at 0200. He stated the crash site was obscured by clouds, there was strong turbulence, the wind was gusting from the south at 30 to 40 KTS, and there was heavy rain. An examination of the site revealed the helicopter had collided with trees on a steep slope while in a turn. No preimpact/ mechanical malfunction or failures were found that would have attributed to the accident.

Aircraft

Registration
N5686Z
Reported as
Enstrom 280C
Category
Helicopter
Serial number
1166
Airframe hours
645
Engine
Lycoming HIO-360-E1AD, 205 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Operator
Paul David Zimmerly
Registered owner
Paul David Zimmerly
Departed
Ridgefield, WA
Destination
Hillsboro, OR
Airport
H10

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
46
Certificate
Private
Medical
Class 3, Invalid Medical for flight
Flight hours
328 total · 313 in this make and model · 294 as pilot in command · 3 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Night/dark
Wind
170° at 10 knots
Visibility
7 statute miles
Lowest ceiling
3,600 ft overcast
Temperature
113 °F
Altimeter
29.00 inHg
Observed at
H10, 8 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.