NYC04CA001

NTSB accident investigation · Williams RV-4 · Metz, WV · October 3, 2003

Accident · No injuriesData collectionFinal report
Date
October 3, 2003, 17:25 local (21:25 UTC)
Place
Metz, WV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N475FWilliams RV-4
Weather
Visual (VMC) · Day
Status
Completed · report March 2, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20031003030279A
Case key
58084

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 improper decision to operate without accurate fuel gauges, which resulted in a power loss due to fuel exhaustion, and an off airport landing

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 - normal
Fuel system,fuel quantity float/sensor - inaccurate
Operation with known deficiencies in equipment - intentionalPilot in commandCause
Fluid,fuel - exhaustionCause
Forced landingDescent - emergency
In flight collision with objectLanding - roll
Object - pole

Analysis

The pilot was en route to his home base, with a homebuilt kit airplane when the engine lost power, after about 2.4 hours of flight. During the forced landing the airplane struck an electrical pole. Examination revealed the fuel tanks were empty, and there was no evidence of a fuel spill on the ground, although both fuel tanks were ruptured. There was no blue staining on the top of the wings, or under the fuselage, although heavy rains had fallen for two days between the accident, and its examination by the FAA. There were no loose fittings on the fuel line leading to the engine. The spark plugs were slate gray in appearance, and thumb compression was found in all cylinders. The pilot reported that the fuel gauges were inaccurate and fuel consumption on the 2 previous flights had averaged between 8.5 and 9.5 gallons per hour. At the last refueling, the pilot had requested that the fuel servicing person leave about 1 inch of space at the top of the fuel tank. The pilot reported that when he preflighted the airplane, he thought the fuel level was down about 1 inch from the top of the tank, The fuel tanks were reported to hold 16 gallons in each wing. A representative of the kit manufacturer reported that the fuel tank capacity could vary by a few gallons, along with the amount of unusable fuel due to variations in fuel tank assembly by builders. The experimental operating limitations issued by the FAA for the airplane required an operative fuel indicating system to indicate the amount of fuel in each tank.

Factual narrative

On October 3, 2003, about 1725 eastern daylight time, a homebuilt RV-4 was substantially damaged during a forced landing in Metz, West Virginia. The certificated airline transport pilot was not injured. Visual meteorological conditions prevailed for the personal flight which departed from Danville, Illinois. No flight plan had been filed for the flight that was destined for Morgantown, West Virginia, and was conducted under 14 CFR Part 91.

According to the pilot, he had purchased the airplane on September 5, 2003, and then received 3 hours of dual instruction in the airplane from a flight instructor. He departed on a cross-country flight to bring the airplane to Manassas Regional Airport (HEF), Manassas, Virginia. The pilot further reported that due to inaccurate fuel gauges, he kept the planned flight to a maximum of 2.5 hours. The pilot reported that the fuel burn on the two legs that preceded the accident flight were 9.4 gallons per hour, and 8.9 gallons per hour. The pilot added that he had requested the refueler to keep the fuel down about 1/2 to 1 inch below the top of the refueling neck to avoid spillage of fuel onto the wing.

However, the refueler remembered that the pilot asked for the fuel level to be about 1 to 1.5 inches down from the top.

Records from the airport indicated that the airplane was serviced with 13.8 gallons of 100 LL (low lead) aviation grade gasoline.

The pilot said he was not present when the airplane was refueled, however, he added that he did remove the fuel caps and look into the wing and saw that the fuel was what he estimated to be about 1 inch down from the top of the fuel tank. He reported his departure time from Danville as about 1500 eastern daylight time.

The pilot reported that after he contacted Morgantown control tower, the engine sputtered and then lost power. He turned on the electric boost pump and switched fuel tanks, but was unable to restore engine power, and declared and emergency. He further stated:

"...The only place I saw was an area of grass in a gully surrounded by mountains and trees on all sides. I slowed the aircraft and put out my full flaps while turning 180 degrees toward the spot, at the same time applying a very steep slip maneuver to get the aircraft past the steep incline. I touched down on the grass but the strip was divided in about half with an old barn in the middle. When I saw that I was going to hit the barn dead on, I got the aircraft off the ground again to pass through a 25-35 foot opening between the barn and the line of trees. The aircraft's left wing clipped an electrical pole and the aircraft's speed was slowed up as well as causing the aircraft to make a 180 degree turn and then crash tail first...."

According to records from the Federal Aviation Administration (FAA), the pilot initially established radio contact with the Morgantown control tower at 1720. He declared an emergency at 1724:40.

An FAA inspector reported that there was no evidence of a fuel spill on the ground, and not a strong odor of fuel at the accident site. The left fuel tank contained trace amounts of fuel. All fuel lines were checked and found to be secure, and there was no blue staining on the bottom of the fuselage. The spark plugs were slate gray in appearance. There was no blue staining behind the fuel caps on the tops of the wings. However, he added that heavy rain had fallen for two days between the time of the accident, and when he examined the airplane.

Both fuel tanks were broken open, and attempts to fill the tanks with water to check the capacity resulted in water running out onto the ground.

The airplane was built from a kit. According to a representative of the kit manufacturer, the fuel tanks are not pre-formed, and therefore, the builder constructs the fuel tanks along with other items. The fuel capacity of the tanks was reported to be 16 gallons per side. However, the kit manufacturer representative also reported that this amount could vary by a gallon or two due to construction methods used, and how close the builder stuck to the original plans. In addition, the location of the fuel pickup point could affect the amount of unusable fuel remaining in the fuel tank.

The FAA had issued Experimental Operating Limitations for the airplane. Included in the limitations were inspection and maintenance information that the pilot was required to comply with. According to item # 5 in the Experimental Operating Limitations:

"Aircraft instruments and equipment installed and used under the listed sections of 14 CFR, Part 91.205 (b through e) must be inspected and maintained in accordance with the requirements of 14 CFR, Part 91...."

According to 14 CFR Part 91.205 (b)(9), the airplane was required to have a fuel gauge indicating the quantity of fuel in each tank.

According to the West Virginia State Police, the pilot requested and received a field sobriety test, and no alcohol was noted.

Aircraft

Registration
N475F
Reported as
Williams RV-4
Category
Airplane, amateur-built
Serial number
BWS4
Airframe hours
560
Engine
Lycoming O-320-E2D, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · September 20, 2003
Departed
DNV · Danville, IL
Destination
MGW · Morgantown, WV
Airport
MGW · Morgantown, runway 18, grass/turf

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
59
Injuries
None
Certificates
Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Last flight review
March 27, 2003
Seat
Left
Toxicology
Performed
Flight hours
9,680 total · 20 in this make and model · 8,000 as pilot in command · 80 in the last 90 days · 31 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 5 knots
Visibility
10 statute miles
Lowest ceiling
12,000 ft broken
Temperature
57 °F, dew point 39 °F
Altimeter
29.94 inHg
Observed at
MGW, 21 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.