CEN12LA587

NTSB accident investigation · Aviat A-1 · Rolla, ND · August 29, 2012

Accident · No injuriesLimited investigationFinal report
Date
August 28, 2012, 19:00 local (Aug 29, 2012, 00:00 UTC)
Place
Rolla, ND
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N49363Aviat A-1
Defining event
Enroute-cruise: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report September 12, 2013
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA/FSDO
FAA report
20120828018159A
Case key
84853

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 pilot's failure to secure the right wing's fuel cap before the flight and to properly manage the available fuel supply during the flight, which resulted in a loss of engine power due to fuel exhaustion.

Findings · 2

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.

Fluids: fuelAircraft › Fluids/misc hardware · Fluid managementAviat A-1: 1 caseAll aircraft: 1,695 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 stated that he self-fueled the airplane with 40 gallons of fuel before the cross-country flight. About 10 miles from his destination airport, the engine stopped producing power. The pilot made a forced landing to a field and flipped over. A postaccident examination of the airplane revealed the right wing's fuel cap was missing and could not be located. The top of the wing area around the fuel cap and back toward the trailing edge was stained blue, which was consistent with fuel venting overboard. Examination of the left wing fuel tank revealed it was empty of fuel and less than 1 cup of fuel was drained from the right wing fuel tank. No mechanical malfunctions or anomalies were noted with the airplane that would have precluded normal operation.

Factual narrative

On August 28, 2012, about 1850 central daylight time, N49363, an Aviat Inc A-1 Husky, sustained substantial damage when it nosed over during a forced landing to a field after a total loss of engine power near Rolla, North Dakota. The certificated commercial pilot and the passenger were not injured. No flight plan was filed for the cross country flight that departed Huron Regional Airport (HON) Huron, South Dakota, at 1430, and was destined for Rolla Municipal Airport (06D), Rolla, North Dakota. Visual meteorological conditions prevailed for the personal flight conducted under 14 Code of Federal Regulations Part 91. The pilot stated that he self-fueled the airplane before he departed with 40 gallons of fuel. The flight was uneventful until they were 10 miles south of the Rolla airport. The pilot said,"...the engine cut out, sputtered and quit and would not restart." He immediately turned into the wind and landed in a harvested wheat field. Upon touch down, he applied brakes to avoid a large pot hole. The airplane tipped up on its nose and slowly fell on to its back, which resulted in structural damage to the wing struts. An airframe and power plant mechanic recovered the airplane from the field. In a written statement, he said that the right wing's fuel cap was missing and could not be located. The top of the wing area around the fuel filler cap was stained blue back toward the trailing edge consistent with fuel venting overboard. The mechanic also said that when he removed both wings, there was no fuel in the left wing and less than a cup of fuel in the right wing. No other mechanical anomalies were noted with the airplane or engine.

Aircraft

Registration
N49363
Reported as
Aviat A-1
Category
Airplane
Serial number
1234
Airframe hours
1,432.4
Engine
Lycoming O&VO-360 SER, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Airplane Inc
Registered owner
Airplane Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 2, 2012
Departed
HON · Huron, SD
Destination
Rolla, ND

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
37
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Last flight review
April 21, 2011
Seat
Left
Flight hours
3,680 total

Weather

Conditions
Visual (VMC) · Day
Wind
140° at 7 knots
Visibility
10 statute miles
Temperature
84 °F, dew point 61 °F
Altimeter
29.94 inHg
Observed at
DVL, 55 nm away

Docket · 3

The files NTSB released with the investigation on July 31, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 146 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.