CEN10CA517

NTSB accident investigation · Beech D35 · Guymon, OK · September 1, 2010

Accident · Minor injuriesData collectionFinal report
Date
September 1, 2010, 12:30 local (17:30 UTC)
Place
Guymon, OK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N3446BBeech D35
Defining event
Approach: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report March 16, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA FSDO
FAA report
20100901043799A
Case key
77187

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 reasons.

Findings · 1

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.

Not determinedNot determined › Not determined · Unknown/Not determinedBeech D35: 1 caseAll aircraft: 2,247 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 reported that he departed on a cross-country flight with 49 gallons of fuel on-board the airplane. About 3 hours later, as he approached his destination airport, the airplane’s engine surged followed by a total loss of power. The pilot suspected that the engine had experienced vapor lock/fuel blockage and attempted to resolve the problem by selecting each of the airplane’s three fuel tanks and affirming that the mixture control was in the full rich position. The airplane continued to descend and the pilot elected to conduct a forced landing at his destination airport. The airplane did not have sufficient altitude and the pilot made a hard landing diagonally across the runway. During the landing, the airplane’s nose gear collapsed and the right wing was substantially damaged. A Federal Aviation Administration inspector examined the airplane on-site and reported that it appeared the underside of the fuselage had blue stains on it akin to the coloration of fuel; he noted that the fuel caps had duct tape on them. The inspector was unable to determine if the airplane’s fuel tanks contained fuel. The reason for the loss of engine power was not determined.

Factual narrative

The pilot reported, via the submitted NTSB 6120.1 form, that he departed on a cross-country flight with 49 gallons of fuel on-board the airplane. About 3 hours later as he approached his destination airport, the airplane’s engine "revved up and down, 3 or 4 times” before losing power. Thinking that the engine had a vapor lock/fuel blockage, the pilot attempted to resolve the problem by selecting each of the airplane’s three fuel tanks and affirming that the mixture control was in the full rich position. Without engine power, the pilot elected to conduct a downwind, forced landing at his destination airport; however, with insufficient altitude, the pilot made a hard landing diagonally across the runway. During the landing, the airplane’s nose-gear collapsed and the right wing was substantially damaged. The FAA Inspector, who examined the aircraft on-site, reported that it appeared the aircraft had “blue stains” on the underside of the fuselage and that the fuel caps had duct tape on them. The inspector was unable to determine if the airplane’s fuel tanks contained fuel. The reason for the loss of engine power was not determined.

Aircraft

Registration
N3446B
Reported as
Beech D35
Category
Airplane
Serial number
D-3684
Airframe hours
4,836
Engine
Cont Motor E185 SERIES, 205 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 10, 2009
Departed
52F · Roanoke, TX
Destination
GUY · Guymon, OK
Flight plan
VFR
Airport
GUY · Guymon Municipal Airport, runway 18, 5,900 × 100 ft, asphalt

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
52
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
November 4, 2009
Flight hours
1,388 total · 767 in this make and model · 1,347 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 9 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 61 °F
Altimeter
29.94 inHg
Observed at
KGUY

Docket · 5

The files NTSB released with the investigation on October 5, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 731 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.

Other investigations on N3446B · 1

Matched to the same aircraft by N-number and date.