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MIA92LA031

1991-11-17 · OCALA, Florida, United States · Minor · 1 aircraft · Status: Completed

Aircraft involved

Probable cause & findings

THE PILOT-IN-COMMAND'S IMPROPER USE OF COLLECTIVE CONTROL AND THROTTLE DURING RECOVERY FROM AN AUTOROTATION WHICH RESULTED IN LOSS OF ROTOR RPM AND A SUBSEQUENT HARD LANDING.

Factual narrative

PILOT INITIATED PRACTICE AUTOROTATION. AT 500 FEET ALTITUDE RECOVERY WAS ATTEMPTED BY INCREASING COLLECTIVE AND INCREASING THROTTLE. LOW ROTOR SPEED WARNING WAS HEARD AND ENGINE DID NOT ACCELERATE. PILOT LOWERED COLLECTIVE AND CONTINUED AUTOROTATION TO THE GROUND AT WHICH TIME A HARD LANDING WAS MADE. POSTCRASH EXAMINATION OF THE AIRCRAFT BY FAA INSPECTORS REVEALED NO EVIDENCE OF FAILURE OR MALFUNCTION OF THE AIRCRAFT ENGINE. THE ENGINE WAS OPERATED AFTER THE ACCIDENT WITH NO EVIDENCE OF FAILURE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1991_MIA92LA031.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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