Aviation Accident Summaries

Aviation Accident Summary FTW89LA120

AUSTIN, TX, USA

Aircraft #1

N888CG

ROBINSON R22

Analysis

ACCORDING TO THE PLT, THE HELICOPTER WAS AT ABOUT 300' & 30 KTS, WHEN THE 'LOW RPM' LIGHT & HORN WERE ACTIVATED. HE LOWERED THE COLLECTIVE & APPLIED THROTTLE, BUT SAID THERE WAS NO INCREASE IN POWER. ALSO, HE NOTED THAT THE 'ENGINE AND RPM WERE DOWN TO 70-80% AND STILL MARRIED. SUBSEQUENTLY, HE REALIZED THERE WAS INSUFFICIENT ALT TO RECOVER AND APPLIED FULL COLLECTIVE AS THE HELICOPTER HIT THE TOPS OF TREES. ADDITIONALLY, HE SAID THAT AT NO TIME DID THE OIL PRESSURE OR ALTERNATOR LIGHT ILLUMINATE. APRX 15 MI ESE AT AUSTIN, THE 1550 CDT WIND WAS FROM 170 DEG AT 15 GUSTING 20 KTS & THE TEMP WAS 96 DEG. AT THE TIME OF THE EVENT, THE HELICOPTER RPRTDLY HAD A TAILWIND.

Probable Cause and Findings

THE PILOT'S IMPROPER INFLIGHT PLANNING/DECISION, WHICH RESULTED IN A SITUATION WHERE HE WAS UNABLE TO MAINTAIN ADEQUATE ROTOR RPM. FACTORS RELATED TO THE ACCIDENT WERE: HIGH TEMPERATURE, TAILWIND, AND TREES.

 

Source: NTSB Aviation Accident Database

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