SEA98LA193

NTSB accident investigation · Cessna T-50 · Missoula, MT · September 27, 1998

Accident · No injuriesLimited investigationFinal report
Date
September 27, 1998, 09:25 local (15:25 UTC)
Place
Missoula, MT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N6HSCessna T-50
Weather
Visual (VMC) · Day
Status
Completed · report January 11, 2000
Report
Approved by Office Director
FAA report
19980927034599A
Case key
44141

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

A quick drain was open due to the pilot's inadequate preflight.

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 powerTakeoff - initial climb
Fuel system,drain - openCause
Aircraft preflight - inadequatePilot in commandCause
Forced landingEmergency descent/landing
On ground/water collision with objectLanding - roll
Object - fence

Analysis

The pilot reported that shortly after takeoff, the right engine lost power. The pilot was unable to maintain altitude and landed the airplane in an open field. During the landing roll, the airplane collided with a fence. Witnesses reported that fuel was observed flowing from the right engine lower nacelle as the pilot was starting the engines in preparation for taxi and departure. One witness approached the aircraft and told the pilot of this situation. The pilot disregarded this information and proceeded to start the right engine and taxi to the runway. After the accident, fuel was observed flowing from the right engine. A fireman opened the access panel and found that the gascolator quick drain was locked in the open position. The fireman turned the mechanism 90 degrees and the drain sprang shut. The fuel flow then stopped.

Factual narrative

On September 27, 1998, at 0925 mountain daylight time, a Cessna T-50, N6HS, registered to and operated by the pilot as a 14 CFR Part 91 personal flight, experienced a loss of engine power and subsequent forced landing shortly after takeoff from the Missoula International Airport, Missoula, Montana. During the landing roll in a field, the airplane collided with a fence. Visual meteorological conditions prevailed at the time and a visual flight rules flight plan was filed. The airplane was substantially damaged and the airline transport pilot and his passenger were not injured. The flight was en route to Coeur d'Alene, Idaho.

In a written statement, the pilot reported that shortly after takeoff, the right engine lost power. The pilot stated that he was unable to maintain altitude and continued straight ahead, and landed the airplane in a pasture. During the landing roll, the airplane collided with a fence before coming to rest. The pilot stated that after the accident, fuel was observed running from the right engine drain valve.

Witnesses reported that fuel was observed flowing from the right engine lower nacelle as the pilot was starting the engines in preparation for taxi and departure. One witness approached the aircraft and told the pilot of this situation. The pilot disregarded this information and proceeded to start the right engine and taxi to the runway.

After the accident, fire department personnel observed fuel flowing from the right engine. One fireman reported that he opened the access panel and found that the gascolator quick drain was locked in the open position. The fireman turned the mechanism 90 degrees and the drain sprang shut. The fuel flow then stopped.

After the aircraft was moved to the airport, a Federal Aviation Administration Inspector from the Helena, Montana, Flight Standards District Office inspected the gascolator quick drain. The inspector found that the mechanism operated with no mechanical failures or malfunctions noted.

Aircraft

Registration
N6HS
Reported as
Cessna T-50
Category
Airplane
Serial number
3696
Airframe hours
3,011
Engine
Jacobs R755-9, 245 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
William B. Stookey
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 1998 · 31 hours before
Destination
COE · Coeur D'Alene, ID
Flight plan
VFR

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
74
Certificates
Flight engineer, Commercial, Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
36,180 total · 100 in this make and model · 35,500 as pilot in command · 30 in the last 90 days · 13 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Altimeter
30.00 inHg

FAA reports on this event · 1

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