FTW02LA225

NTSB accident investigation · Southworth EAA Bi-Plane May Bee · West, TX · August 3, 2002

Accident · Minor injuriesLimited investigationFinal report
Date
August 3, 2002, 17:30 local (22:30 UTC)
Place
West, TX
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N11SSouthworth EAA Bi-Plane May Bee
Weather
Visual (VMC) · Day
Status
Completed · report December 6, 2002
Report
Approved by Office Director
Parties
Federal Aviation Administration (FSDO)
FAA report
20020803023589A
Case key
55393

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 inadequate preflight/planning inspection which resulted in fuel exhaustion and subsequent loss of engine power.

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 power(total) - nonmechanicalCruise
Preflight planning/preparation - inadequatePilot in commandCause
Refueling - not performedPilot in commandFactor
Fluid,fuel - exhaustion
Forced landingEmergency descent/landing
Loss of control - in flightEmergency descent/landing
Airspeed - not maintainedPilot in commandCause
Stall/spin - inadvertent
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - grass

Analysis

The pilot purchased the single-place airplane on the day of the accident and was briefed by the previous owner that the airplane burned 8-10 gallons of fuel per hour. The main fuel tank (16 gallons) was topped off and the pilot elected to not fill the auxiliary fuel tank (8 gallons), in order to remain within the airplane's weight and balance limitations. The pilot spent approximately 5-10 minutes taxiing the airplane and performing the pre-takeoff engine run-up. At 1620, the flight departed for a 64 nautical mile flight, and arrived at 1710. The pilot intended on landing at the municipal airport; however, upon landing, the pilot realized that he had landed at an abandoned airstrip used by agricultural operators, located 2 miles southwest of the municipal airport. There were no fuel services available at the airstrip, and the pilot noted that the airplane's fuel gauge indicated 8 gallons. The pilot elected to depart and fly to another airport 27 miles south to re-fuel, rather than traveling back north to the municipal airport. The pilot estimated that the he was on the ground approximately 5-10 minutes prior to departing. The flight departed and 15 minutes later, when the airplane was in cruise flight at 2,500 feet, the engine began sputtering and then lost power. The fuel gauge indicated that 1/2 tank of fuel remained at the time the engine lost power. The pilot noted a high sink rate and lowered the nose, while simultaneously banking to the right to avoid obstructions. Subsequently, the airplane entered a spin to the right before impacting a grass field. The fuel system was compromised during the accident. The fuel system contained only residual fuel and there was no evidence of fuel at the accident site.

Factual narrative

On August 3, 2002, at 1730 central daylight time, a Southworth EAA Bi-Plane May Bee, N11S, single-engine amateur-built airplane, was substantially damaged when it impacted terrain during an uncontrolled descent near West, Texas. The airplane was registered to a private individual and operated by the pilot. The commercial pilot, sole occupant of the airplane, sustained minor injuries. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 personal flight. The cross-country flight originated from an abandoned airstrip, Hillsboro, Texas, approximately 1710, and was destined for the Waco Regional Airport, Waco, Texas.

According to the pilot, he purchased the single-place airplane in Justin, Texas, on the day of the accident. Prior to departing the Clark Airport in Justin, the pilot was briefed by the previous owner on the airplane's handling/performance characteristics, noting that the airplane burned 8-10 gallons of fuel per hour. The main fuel tank (16 gallons) was topped off and the pilot elected to not fill the auxiliary fuel tank (8 gallons), in order to remain within the airplane's weight and balance limitations. The pilot spent approximately 5-10 minutes taxiing the airplane and performing the pre-takeoff engine run-up. The airplane departed from Justin, for the 64 nautical mile flight to Hillsboro, at 1620 and arrived at 1710. The pilot intended on landing at the Hillsboro Municipal Airport (5T5); however, upon landing, the pilot realized that he had landed at an abandoned airstrip used by agricultural operators, which is located 2 miles southwest of 5T5. There was no fuel service available at the airstrip, and the pilot noted that the airplane's fuel gauge indicated 8 gallons. The pilot stated that "this seemed consistent with the fuel burn rate I had expected," and he decided to continue on to the Waco Regional Airport (27 miles south of Hillsboro) to re-fuel, rather than going back north to 5T5. The pilot estimated that he was on the ground approximately 5-10 minutes in Hillsboro, prior to departing for Waco.

The flight departed and 15 minutes later, with the airplane in cruise flight at 2,500 feet, the engine began sputtering and then lost power. The fuel gauge indicated that 1/2 tank of fuel remained at the time the engine lost power. The pilot noted a high sink rate and lowered the nose, while simultaneously banking to the right to avoid obstructions. Subsequently, the airplane entered a spin to the right before impacting a grass field.

An FAA inspector, who examined the airplane, reported that the wooden right wing's top and bottom spars were damaged, and the left wing sustained structural damage. Additionally, the engine firewall was displaced aft toward the cockpit. The fuel system was compromised during the accident. The fuel system contained only residual fuel and there was no evidence of fuel at the accident site.

Aircraft

Registration
N11S
Reported as
Southworth EAA Bi-Plane May Bee
Category
Airplane, amateur-built
Serial number
JS-1
Airframe hours
599
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Jerry D. Pockrus
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · May 15, 2002 · 3 hours before
Departed
NONE · Hillsboro, TX
Destination
ACT · Waco, TX

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
54
Injuries
Minor
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
August 2, 2002
Seat
Center
Flight hours
928 total · 1 in this make and model · 803 as pilot in command · 2 in the last 90 days · 2 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
97 °F, dew point 66 °F
Altimeter
29.95 inHg
Observed at
ACT, 13 nm away

FAA reports on this event · 1

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