NTSB CHI91DEP04 — 1991-04-11 · GREEN BAY, Wisconsin, United States

N1490 has since been reassigned. It is now registered to a different aircraft (QUICKSILVER SPORT 2S), which was not involved in this event.

Aircraft involved

N1490 BRAULT GLASAIR SH2F Minor

Probable cause & findings

THE PILOT IN COMMAND'S FAILURE TO REFUEL THE AIRCRAFT PRIOR TO DEPARTURE. A FACTOR CONTRIBUTING TO THE ACCIDENT WAS THE UNPORTING OF THE FUEL PICK UP LINE IN FUEL TANK DURING ABRUPT OR NEGATIVE 'G' MANEUVERS.

Factual narrative

THE AIRCRAFT WAS MANEUVERING IN ATTITUDES THAT IMPOSED NEGATIVE 'G' FORCES ON THE AIRFRAME WHEN ENGINE POWER WAS LOST. ATTEMPTS TO RESTART THE ENGINE WERE UNSUCCESSFUL. AN EMERGENCY LANDING WAS INITIATED TO A PAVED ROAD. THE AIRCRAFT STRUCK A WIRE ON APPROACH AND SUBSEQUENTLY IMPACTED A DITCH. EXAMINATION REVEALED THAT THE FUEL PICKUP LINE WAS CAPABLE OF UNPORTING WITH LOW FUEL LEVEL DURING NEGATIVE 'G' MANEUVERS. TOTAL FUEL CAPACITY WAS 34.5 GALLONS. APPROXIMATELY 10 GALLONS OF FUEL WERE PRESENT WHEN THE ENGINE POWER FAILURE OCCURRED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1991_CHI91DEP04.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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