# NTSB IAD00LA005: Ankenbruck SEA Hawk, N101WR, Somerset, PA, November 12, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: November 12, 1999, 13:45 local (18:45 UTC) - Place: Somerset, PA - Coordinates: 39.999828, -79.070739 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.9998&lon=-79.0707&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 22, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 47786 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD00LA005 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/47786/pdf - Page: https://openairdocs.org/ntsb/IAD00LA005 ## Probable cause The pilot's improper preflight which resulted in a loss of power due to contaminated fuel, and the pilot's failure to maintain aircraft control after the loss of power. A factor in the accident was fuel contamination. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - nonmechanical, takeoff - initial climb - aircraft preflight - improper, pilot in command (cause) - fluid,fuel - contamination (contributing factor) - Loss of control - in flight, emergency landing after takeoff - aircraft control - not maintained, pilot in command (cause) ## Analysis The pilot performed several high speed taxi runs to 'test the brakes', without the use of flaps. He then lowered the flaps, taxied 1/3 the distance down the runway, and power was added. As the airplane 'lifted slightly off the runway,' about 8-10 feet off the ground, the 'engine quit' and the airplane 'pitched over to the left.' The engine then regained power, and the pilot attempted to land the airplane. During the landing, the airplane made numerous contacts with the ground over a distance of 75 feet. The pilot stated he had no intention of flight on the day of the accident and when the airplane impacted the ground, 'it wasn't really flying.' Particles of the fuel tank lining were found in the fuel when it was drained from the main tank, after the accident. Fuel drained from the auxiliary tank resembled 'pond scum' and contained an odor of an aviation fuel and automobile gasoline mixture. Prior to the accident, the airplane had not been flown in five years. ## Factual narrative On November 12, 1999, about 1345 Eastern Standard Time, a homebuilt Sea Hawk, N101WR, was substantially damaged during liftoff from Somerset County Airport (2G9), Somerset, Pennsylvania. The certificated private pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the flight conducted under 14 CFR Part 91. The pilot arrived at 2G9 on November 11, 1999, to examine the aircraft documents and taxi the airplane to become familiar with it and "get a feel for the brakes." The following morning, the pilot performed several high speed taxi runs to "test the brakes" using 3/4 of the 4,697 foot runway. Later that afternoon, the pilot wanted to perform the same taxi tests, using different increments of flaps to determine how the airplane would perform. The airplane was taxied about 1/3 the distance down the runway, with the flaps lowered, and power was added. As the airplane "lifted slightly off the runway," about 8-10 feet above the ground, the "engine quit" and the airplane "pitched over to the left." The engine then regained power, and the pilot decided to land. During the landing, the airplane made numerous contacts with the ground over a distance of 75 feet. The pilot additionally stated that he had no intention of flight on the day of the accident and when the airplane impacted the ground, "it wasn't really flying." A Federal Aviation Administration (FAA) Inspector, who examined the airplane after the accident, stated that when he drained fuel from the main tank, located on the upper wing, he discovered red particles, "bigger than pepper flakes," similar to the lining of the fuel tank. The drained fuel was consistent with that of aviation fuel. When the Inspector drained fuel from the auxiliary tank, located on the lower wing, it resembled "pond scum," and contained an odor consistent with that of a mixture of aviation fuel and automobile gasoline. The Inspector further stated that the airplane had been sitting on the ramp, without being flown, for five years. A mechanic stated to the FAA Inspector that fuel was added to the airplane's main tank on November 11, 1999, and he drained a sample. The main tank was topped off with 16 gallons of fuel, on November 12, 1999. No fuel was added to the lower auxiliary fuel tank on either day. ## Aircraft - Registration: [N101WR](https://openairdocs.org/deregistered/N101WR-2002-04-01), registration cancelled 2002-04-01, S/N 101 (OpenAirDocs) - Reported make and model: Ankenbruck SEA HAWK - Registry model: [Ankenbruck Wayne R SEA HAWK](https://openairdocs.org/model/ankenbruck-wayne-r-sea-hawk) (registry code 9570768) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 101 - Engines: Lycoming O-320 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Donald A Mitchell - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, November 9, 1999 - Departed: 2G9, PA - Airport: 2G9, Somerset County Airport, runway 24, 4,697 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; private; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,000 total ## Weather - Conditions: Visual (VMC), Day - Wind: 220° at 12 knots - Visibility: 6 statute miles - Lowest ceiling: 25,000 ft broken - Temperature: 57 °F, dew point 36 °F - Altimeter: 30.00 inHg - Observed at: LBE, 22 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 (OpenAirDocs). - [Accident 19991112040289A](https://openairdocs.org/incident/19991112040289A), Nov 12, 1999: Amtr SEAHAWK, Somerset, PA, No damage. (-23) The pilot stated that he had no intention of flying the aircraft. Hewas only perofrming high speed taxi runs when it inadvertently lifted off. The engine… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.