SEA85LA224

NTSB accident investigation · Cessna 172PII · Brinnon, WA · September 21, 1985

Accident · FatalLimited investigationFinal report
Date
September 20, 1985, 20:28 local (Sep 21, 1985, 03:28 UTC)
Place
Brinnon, WA
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N51698Cessna 172PII
Weather
Visual (VMC) · Night/dark
Status
Completed
Report
Approved by Office Director
FAA report
19850920046909A
Case key
40247

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

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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 collision with terrain/waterCruise
Supervision - inadequatePilot in command(cfi)Cause
In-flight planning/decision - inattentivePilot in command(cfi)Cause
Became lost/disorientedPilot in command(cfi)Cause
Terrain condition - mountainous/hillyFactor
Light condition - dark nightFactor
Weather condition - cloudsFactor
Comm/nav equipment,distance measuring eqpt(dme) - inoperativeFactor
Proper altitude - not maintainedCause

Analysis

Acft collided with vertical rock face in mountainous terrain 32 mins after takeoff on night VFR instrument instruction flt, 31 mi west of point of departure. Radar trk shows acft proceeded nw for 14 mins, reversed course for 4 mins, then headed due west into mountainous terrain. Elev of the crash site was 3700 ft. cloud bases in the area (sea level) were reported to be 3000 to 4000 ft with 8 miles vis, scattered rain showers and haze. A mountain rescue team reported on-site condition of the wreckage indicated collision occurred with the acft in level cruise flt. The acft was destroyedby impact forces and post-impact fire except for the outer wing panels and empennage. The acft was not DME equipped and an instrument training hood was on board.

Aircraft

Registration
N51698
Reported as
Cessna 172PII
Category
Airplane
Serial number
17274337
Airframe hours
1,361
Engine
Lycoming O-320-D2J, 160 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Instructional · Part 91
Operator
Ronald Hawks, doing business as Let'S Fly Flying Club
Registered owner
Frank L. Abel
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 10, 1985 · 60 hours before
Departed
BFI · Seattle, WA

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
59
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
360 total · 38 in this make and model · 225 as pilot in command · 5 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Night/dark
Wind
20° at 6 knots
Visibility
8 statute miles
Lowest ceiling
3,700 ft broken
Temperature
61 °F, dew point 52 °F
Altimeter
30.00 inHg
Observed at
SEA, 31 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.