NYC99LA141

NTSB accident investigation · Prendergast Seawind · Martinsburg, WV · June 14, 1999

Accident · No injuriesLimited investigationFinal report
Date
June 14, 1999, 13:30 local (17:30 UTC)
Place
Martinsburg, WV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N8190JPrendergast Seawind
Weather
Visual (VMC) · Day
Status
Completed · report November 22, 2000
Report
Approved by Office Director
FAA report
19990614047489A
Case key
46542

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 air-intake's inner liner separating from its outer liner, which blocked airflow to the fuel servo, resulting in a loss of engine power. A factor in the accident was the owner/builder's inadequate inspection of the airplane.

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 powerTakeoff - initial climb
Induction air ducting - separationCause
Maintenance,inspection - inadequateOwner/builderFactor
Forced landingDescent - emergency
On ground/water encounter with terrain/waterEmergency landing
Terrain condition - rising

Analysis

The airplane's engine started on the first attempt, and ran 'smoothly.' The pilot then taxied the airplane short of the runway, and completed the run-up checks. No anomalies were noted. He then taxied onto the runway, advanced the throttle, and scanned the engine instruments. No deficiencies were observed, so the pilot executed the takeoff. After retracting the flaps, and reaching about 500 feet agl, the pilot executed a left turn to stay within glided distance of the airport. Approximately 30 degrees through the turn, the airplane experienced a loss in power. The propeller continued to windmill, but the engine did not responded to throttle movements. With insufficient altitude to reach the runway the pilot executed a forced landing to a field. Examination of the engine revealed that the inner liner of the air-intake had separated from the outer liner, blocking airflow to the fuel servo.

Factual narrative

On June 14, 1999, about 1330 eastern daylight time, a Seawind homebuilt airplane, N8190J, was substantially damage after experiencing a loss of power during climbout from Eastern West Virginia Regional Shepherd Airport, Martinsburg, West Virginia. The certificated commercial pilot was not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the personal flight conducted under 14 CFR Part 91.

The pilot stated that he arrived at the airport about 1100. He then reinstalled the airplane's engine cowling, and propeller before conducting a preflight. After boarding and completing the pre-start checks, the pilot started the airplane's engine on the first attempt. It ran "smoothly", and he noticed no anomalies. He then taxied the airplane short of runway 26, and completed the run-up checks. During the run-up checks, he stabilized the engine rpm at 4,500, and scanned the instrument panel for deficiency, but found none.

While holding short of runway 26, the pilot visually checked for traffic, announced his intentions on UNICOM, taxied on to the runway, and advanced the throttle. The pilot scanned both the flight instruments and engine instrument during the ground roll, and noticed no discrepancies. He estimated that the airplane became airborne approximately 2,000 feet down the runway. Once airborne, he retracted the flaps, and raised the landing gear. About 500 feet agl, the pilot executed a left turn to stay within glided distance of the airport. Approximately 30 degrees through the turn, the airplane experienced a loss in power. The propeller continued to windmill, but the engine did not responded to throttle movements.

The pilot realized he was not going to make the runway, so he positioned the airplane to land in a grassy field. He felt the airplane would slide better with the landing gear retracted, so he left it up. The pilot reported that the airplane touched down smoothly. Then, the left wing made contact with rising terrain. The airplane rolled right, and the right wing separated on ground contact. The airplane continued to slide on its right side until coming to a stop. The pilot estimated the ground slide was approximately 500 feet. After coming to a stop, the pilot secured the ignition and shut off the electrical master before exiting. He estimated that the airplane had approximately 20 gallons of fuel onboard when the engine lost power.

The pilot added that he had acquired the electronic ignition equipped engine from a "junk yard." Adding, that this was the airplane's third flight since completion. During the previous two flights, the airplane had accumulated about 1 hour of flight time. In addition, on the previous flight, the engine overheated, and lost all of its coolant. Because of the overheating problem, the pilot checked the engine baffling, and cooling system. He also enlarged an opening in the engine cowling to increase airflow.

According to the pilot, he had logged approximately 2,100 hours of total flight experience. About 1,050 hours in single engine land, and about 1,050 hours in multi engine land.

The pilot stated that he examined the airplane's engine after the accident and found the inner liner of the air-intake had separated from the outer liner, blocking airflow to the fuel servo.

Aircraft

Registration
N8190J
Reported as
Prendergast Seawind
Category
Airplane, amateur-built
Serial number
024
Airframe hours
10
Engine
Subaru SVX 3.3L, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John Prendergast
Last inspection
Annual · April 7, 1999 · 10 hours before
Departed
MRB · WV
Airport
MRB · Eastern W Virginia Reg, runway 26, 7,000 × 150 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
59
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
2,100 total · 10 in this make and model · 1,300 as pilot in command · 11 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 12 knots
Visibility
6 statute miles
Lowest ceiling
3,000 ft broken
Temperature
73 °F, dew point 72 °F
Altimeter
29.00 inHg
Observed at
MRB

FAA reports on this event · 1

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