WPR09CA305

NTSB accident investigation · Cessna 172M · McCall, ID · June 22, 2009

Accident · Minor injuriesData collectionFinal report
Date
June 22, 2009, 09:45 local (15:45 UTC)
Place
McCall, ID
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N12463Cessna 172M
Defining event
Enroute-descent: Fuel exhaustion
Weather
Visual (VMC) · Day
Status
Completed · report September 10, 2009
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Bosie FSDO
FAA report
20090622009399A
Case key
74102

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

On this page

Probable cause

A total loss of engine power during descent due to fuel exhaustion as a result of the pilot's failure to determine the fuel quantity prior to departure.

Findings · 5

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Object/animal/substance: wall/barricadeEnvironmental issues › Physical environment · Contributed to outcomeCessna 172M: 2 casesAll aircraft: 29 cases
Object/animal/substance: fence/fence postEnvironmental issues › Physical environment · Contributed to outcomeCessna 172M: 5 casesAll aircraft: 313 cases
Fluids: fuelAircraft › Fluids/misc hardware · Fluid levelCessna 172M: 12 casesAll aircraft: 1,695 casesProbable cause
Planning/preparation: fuel planningPersonnel issues › Task performance · PilotCessna 172M: 6 casesAll aircraft: 719 casesProbable cause
Inspection: preflight inspectionPersonnel issues › Task performance · PilotCessna 172M: 5 casesAll aircraft: 551 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot, who had flown into a backcountry airstrip with minimal fuel in order to reduce the airplane's takeoff weight, departed that airstrip for a destination that was reporting overcast clouds. He made the decision to do so because he heard pilots had reported some openings in the overcast layer that might allow him to descend through the clouds as he neared his destination. When he got near the destination, he discovered that there was no way through the overcast so he returned to the backcountry airstrip. The next day he decided to follow a group of pilots to the same planned destination, but by another route that he was not familiar with. When the other pilots started their engines, the accident pilot realized that he had not yet dipped his fuel tanks to measure fuel quantity, and that the ladder that he needed to perform that function was under camping gear in the airplane. Therefore, so as not to get separated from the pilots he was going to follow en route, he elected to not sump the tanks prior to departure. As he approached the destination airport, one fuel gauge read empty, and the other read one-quarter, but its needle had stopped moving/bouncing, which the pilot thought was a, "…bad sign." Soon thereafter the engine lost all power, and although the pilot tried to stretch the glide to the destination airport, he ultimately had to make a forced landing in what appeared to be an open field. During the landing roll, the airplane impacted some cement barrier blocks and collided with a steel fence gate. The pilot reported no mechanical failures or malfunctions at the time of the accident. Postaccident inspection found no usable fuel remaining in the airplane's fuel system.

Factual narrative

The pilot, who had flown into a backcountry airstrip with minimal fuel in order to reduce the airplane's takeoff weight when it came time to leave, departed that airstrip for a destination that was reporting overcast clouds. He made the decision to do so because he heard pilots had reported some openings in the overcast layer that might allow him to descend through the clouds as he neared his destination. When he got near the destination, he discovered that there was no way through the overcast, so he returned to the backcountry airstrip. The next day he decided to follow a group of pilots to the same planned destination, but by another route that he was not familiar with. When the other pilots started their engines, the accident pilot realized that he had not yet dipped his fuel tanks to measure fuel quantity, and that the ladder that he needed to perform that function was under camping gear in the airplane. Therefore, so as not to get separated from the pilots he was going to follow en route, he elected to not sump the tanks prior to departure. As he approached the destination airport, one fuel gage read empty, and the other read one-quarter, but its needle had stopped moving/bouncing, which the pilot thought was a, "…bad sign." Soon thereafter the engine lost all power, and although the pilot tried to stretch the glide to the destination airport, he ultimately had to make a forced landing in what appeared to be an open field. During the landing roll, the airplane impacted some cement barrier blocks and collided with a steel fence gate. The pilot reported no mechanical failures or malfunctions at the time of the accident. Post-accident inspection found no usable fuel remaining in the airplanes system.

Aircraft

Registration
N12463
Reported as
Cessna 172M
Category
Airplane
Serial number
17261998
Airframe hours
8,548
Engine
Lycoming O-320 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
BYRES KEVIN and HOWLAND GLENN
Registered owner
BYRES KEVIN and HOWLAND GLENN
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 19, 2009
Departed
3U2 · Yellow Pine, ID
Destination
KMYL · McCall, ID

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
48
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
December 18, 2008
Seat
Left
Flight hours
145 total · 127 in this make and model

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
3,250 ft overcast

Docket · 1

The files NTSB released with the investigation on July 6, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 720 KB in all.

FAA reports on this event · 1

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