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IAD00LA005 · Ankenbruck SEA HAWK

12 Nov 1999 · Somerset, PA, United States

Ankenbruck SEA HAWK · Accident: partial loss of engine power (non-mechanical) during initial climb

From Somerset County Airport (2G9) to an unrecorded destination

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Event

NTSB case
IAD00LA005
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
0 · all aircraft and ground
Ground fatalities
0
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
General aviation
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Visual Meteorological Cond

Ankenbruck SEA HAWK

Aircraft type
Ankenbruck SEA HAWK
Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N101WR
Operator
Unknown
Onboard fatalities
Unknown
Route
From Somerset County Airport (2G9), PATo not recorded
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 91: General Aviation
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
Initial climb
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Partial loss of engine power (non-mechanical)
Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
Fuel contamination
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Substantial

Cause areas

  • Pilot in command › Aircraft control, not maintained
  • Pilot in command › Aircraft preflight, improper

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

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.

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.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record IAD00LA005
Event ID
20001212X20111
Case number
IAD00LA005
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
  • The date is the local date, which is the same as the UTC date the NTSB stores.
  • API snapshot SHA-256: 3bc12bd97b784fbb5f82e05e0951381a8ef56d08c4e1945dcd5475e3f3f6e839; retrieved 2026-09-22T13:41:54.828Z.