ERA11CA378

NTSB accident investigation · Beech 77 · Jonesville, VA · July 4, 2011

Accident · Minor injuriesData collectionFinal report
Date
July 4, 2011, 14:45 local (18:45 UTC)
Place
Jonesville, VA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N37148Beech 77
Defining event
Takeoff: Miscellaneous/other
Weather
Visual (VMC) · Day
Status
Completed · report October 17, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20110704014759A
Case key
81004

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

The pilot's delayed decision to abort the takeoff.

Findings · 3

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.

Runway/land/takeoff/taxi surface: soft surfaceEnvironmental issues › Physical environment · Contributed to outcomeBeech 77: 1 caseAll aircraft: 264 cases
Action: delayed actionPersonnel issues › Action/decision · PilotBeech 77: 1 caseAll aircraft: 894 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 she was attempting to take off from a cow pasture. She landed the airplane in the pasture the previous day due to a loss of engine power. She reported that the loss of power was due to debris in the right fuel tank, which was subsequently removed by a mechanic. She measured the length of the field and found that it was shorter than is typically required, but elected to continue with the flight due to the downhill slope of the field. The owner of the pasture mowed a path for the takeoff and the pilot and her husband inspected the takeoff area for rocks and other obstructions. She also determined a "no-go" point on the ground in case the airplane did not accelerate adequately. She removed all unnecessary items from the airplane and prepared for takeoff. During the takeoff roll, the airplane did not accelerate as expected. She aborted the takeoff past the designated no-go point and was unable to stop the airplane before it collided with a fence post. The airplane caught fire as the pilot was exiting the cockpit. The airplane received structural damage to the left wing and fuselage and the pilot experienced second-degree burns. The pilot reported that there were no mechanical malfunctions or anomalies during the takeoff roll. Although she had previously practiced soft-field takeoffs on paved runways, she had no experience with actual soft-field takeoffs.

Factual narrative

The pilot reported that she was attempting to take off from a cow pasture. She landed the airplane in the pasture the previous day due to a loss of engine power. She reported that the loss of power was due to debris in the right fuel tank, which was subsequently removed by a mechanic. She measured the length of the field and found it "shorter than our typical requirement," but elected to continue with the flight due to the downhill slope of the field. The owner of the pasture mowed a path for the takeoff and the pilot and her husband inspected the takeoff area for rocks and other obstructions. She also determined a "no-go" point on the ground in case the airplane did not accelerate adequately. She removed all unnecessary items from the airplane and prepared for takeoff. During the takeoff roll, the airplane did not accelerate as expected. She aborted the takeoff past the designated no-go point and was unable to stop the airplane before it collided with a fence post. The airplane caught fire as the pilot was exiting the cockpit. Structural damage to the left wing and fuselage resulted. The pilot received second-degree burns. The pilot reported that there were no mechanical malfunctions or anomalies during the takeoff roll. Although she had previously practiced soft-field takeoffs on paved runways, she had no experience with actual soft-field takeoffs.

Aircraft

Registration
N37148
Reported as
Beech 77
Category
Airplane
Serial number
WA-188
Airframe hours
6,225
Engine
Lycoming 0-235 SERIES, 115 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Personal · Part 91
Operator
Thorburn-Gundlach David
Registered owner
Thorburn-Gundlach David
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 26, 2011 · 23 hours before
Departed
Jonesville, VA
Destination
OVG · Rose Hill, VA

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
43
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
November 20, 2010
Seat
Left
Flight hours
113 total · 60 in this make and model · 75 as pilot in command · 13 in the last 90 days · 8 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 70 °F
Altimeter
30.03 inHg
Observed at
1A6, 25 nm away

Docket · 3

The files NTSB released with the investigation on August 23, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.5 MB 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.