SEA96LA148

NTSB accident investigation · Mooney M18LA · Beaver Marsh, OR · July 9, 1996

Accident · Serious injuriesLimited investigationFinal report
Date
July 9, 1996, 12:41 local (19:41 UTC)
Place
Beaver Marsh, OR
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N4077Mooney M18LA
Weather
Visual (VMC) · Day
Status
Completed · report February 28, 1997
Report
Approved by Office Director
FAA report
19960709016179A
Case key
42411

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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Probable cause

the loss of engine power for undetermined reason(s). A factor relating to the accident was: the presence of trees near the forced landing area.

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
Reason for occurrence undeterminedCause
Forced landingEmergency descent/landing
In flight collision with objectEmergency landing
Object - tree(s)Factor

Analysis

While cruising about 2000 feet agl, the engine began to lose power. The pilot attempted to make a forced landing on a road, but the airplane hit trees and crashed. Examination of the airplane by FAA inspectors did not reveal any mechanical discrepancy.

Factual narrative

On July 9, 1996, approximately 1241 Pacific daylight time, a Mooney M18LA, N4077, registered to Bryce Boylan, sustained substantial damage when it impacted terrain near Beaver Marsh, Oregon. The private pilot, the sole occupant was seriously injured. The 14 CFR 91 flight originated at Tulelake, California approximately 1130 and was en route to College Place, Washington. Visual meteorological conditions existed in the area.

The pilot stated in a telephone interview that he had topped off both tanks in Tulelake and expected to have enough fuel to make it all the way to College Place. However, he planned on stopping in Redmond, Oregon, for fuel anyway. During the trip, he transferred fuel from the lower tank to the upper tank and the transfer pump seemed to be working normally. He was maintaining about 2000 feet above the ground level and about 90-95 miles per hour indicated airspeed. He was not using any carburetor heat.

In the Beaver Creek area, about 78 nautical miles from the departure airport, the engine started slowing down. He attempted to transfer fuel using the transfer pump but wasn't sure it was working. After about 10-15 seconds the engine was windmilling, so the pilot attempted a landing on a road. The next thing he could recall was someone cutting him out of the wreckage.

In the pilot's written accident report, he stated that "...it is my feeling that I ran out of gas..." and "...tanks were both filled before leaving Tulelake..." The salvage crew which picked up the aircraft about 6 hours after the accident found fuel running from the fuel tank and the ground was saturated with fuel. They also documented the wreckage location and two trees that had been damaged.

Examination of the flight controls, engine, transfer pump and fuel system by FAA inspectors did not reveal any discrepancies.

There were no weather observations taken in the Beaver Creek area. Weather conditions listed in this report came from Redmond, Oregon, about 75 miles north of the accident site. Using a lapse rate of 3 degrees Centigrade, the conditions there at 2000 feet above ground level would have been between "serious icing- descent power" and "moderate icing- cruise power" as listed on the Carburetor Icing chart published by Transport Canada.

Aircraft

Registration
N4077
Reported as
Mooney M18LA
Category
Airplane
Serial number
119
Engine
Lycoming O-145-B, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Bruce & Bryce Boylan
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 1, 1996 · 2 hours before
Departed
081 · Tulelake, CA
Destination
S95 · College Place, WA

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
72
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
300 total · 75 in this make and model · 275 as pilot in command · 10 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 41 °F
Altimeter
30.00 inHg
Observed at
RDM, 75 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.