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CHI91LA131

1991-04-11 · GRAND LEDGE, Michigan, United States · None · 1 aircraft · Status: Completed

Airport 4D0

Aircraft involved

Probable cause & findings

THE STUDENT'S FAILURE TO MAINTAIN A PROPER ALTITUDE AND CLEARANCE FROM THE TERRAIN ALONG WITH THE CFI'S FAILURE TO ADEQUATELY SUPERVISE THE STUDENT'S ACTIONS. A FACTOR CONTRIBUTING TO THE ACCIDENT WAS THE INADEQUATE VISUAL LOOKOUT AVAILABLE DUE TO THE NIGHT LIGHT CONDITIONS.

Factual narrative

THE CFI AND HIS STUDENT WERE TAXIING BACK TO THE RAMP AFTER A NIGHT INSTRUCTIONAL HELICOPTER LESSON WHEN THE ACCIDENT OCCURRED. THE CFI STATED THE STUDENT ASCENDED TO AN ALTITUDE OF APPROXIMATELY 15 FEET DURING THE TAXI AT WHICH TIME THE CFI INSTRUCTED THE STUDENT TO DECREASE ALTITUDE. THE STUDENT DESCENDED TOO LOW AND THE SKID CONTACTED THE TAXIWAY RESULTING IN A DYMANIC ROLL OVER. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1991_CHI91LA131.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.