PRESCOTT, AZ, USA
N248ER
CESSNA 172N
THE STUDENT PLT WAS ON HIS 1ST UNSUPERVISED SOLO FLT & WAS MAKING TOUCH-&-GO LANDINGS IN THE LOCAL PATTERN. AFTER THE 2ND LANDING, HE RETRACTED THE FLAPS, APPLIED FULL POWER & MOVED THE CARBURETOR HEAT TO OFF. HE RPRTD THAT AFTER BECOMING AIRBORNE, HE ENCOUNTERED 'HARSH BACK PRESSURE' & TRIED TO TRIM, BUT THE TRIM DID NOT HELP. SUBSEQUENTLY, THE ACFT NOSED DOWN, CONTACTED THE RUNWAY & BEGAN PORPOISING. THE PLT 'PULLED' THE POWER & STOPPED THE ACFT, BUT THE PROP, NOSE GEAR & FIREWALL WERE DAMAGED DRG THE OCCURRENCE. DRG AN INVESTIGATION, THE ELEVATOR TRIM WAS FOUND IN A 'NOSE DOWN'POSITION & THE TRIM TAB WAS FOUND DISPLACED 1.5 INCHES FROM NEUTRAL. NO MECHANICAL MALFUNCTION OR FAILURE WAS REPORTED.
IMPROPER USE OF THE ELEVATOR FLIGHT CONTROL BY THE PILOT AND HIS FAILURE TO MAINTAIN A PROPER RATE OF CLIMB AFTER LIFT-OFF. CONTRIBUTING FACTORS WERE: IMPROPER USE OF ELEVATOR TRIM BY THE PILOT, HIS LACK OF TOTAL EXPERIENCE, AND AN INADVERTENT PORPOISE.
Source: NTSB Aviation Accident Database
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