Narrative:

I was on a training flight flying from the left seat with my instructor in the right seat. We were practicing takeoffs and lndgs at the zephyrhills, fl airport. After 4 takeoffs and lndgs, we returned to the vdf (fl) airport. Maintenance then noticed that the left propeller had a bent tip on the 2 blades of approximately 1 inch. We were not aware of this indication at anytime during this training session or on which leg it had occurred. Nor did we notice any engine abnormalities or vibrations during this flight. None of the practice lndgs were hard enough to make us do an inspection. The only remedies I could suggest would be to shift the center of gravity more aftward by adding ballast weight in the rear baggage compartment, using less than full fuel tanks for only a 2 hour flight, and by possibly using only 25 degree flaps instead of 40 degree full flaps. All of this would help to keep the nosewheel and propellers on an empty training flight from making ground contact early in the landing.

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Original NASA ASRS Text

Title: PA34 FLT CREW HAS A PROP STRIKE WHILE DOING PRACTICE LNDGS AT KZPH.

Narrative: I WAS ON A TRAINING FLT FLYING FROM THE L SEAT WITH MY INSTRUCTOR IN THE R SEAT. WE WERE PRACTICING TKOFS AND LNDGS AT THE ZEPHYRHILLS, FL ARPT. AFTER 4 TKOFS AND LNDGS, WE RETURNED TO THE VDF (FL) ARPT. MAINT THEN NOTICED THAT THE L PROP HAD A BENT TIP ON THE 2 BLADES OF APPROX 1 INCH. WE WERE NOT AWARE OF THIS INDICATION AT ANYTIME DURING THIS TRAINING SESSION OR ON WHICH LEG IT HAD OCCURRED. NOR DID WE NOTICE ANY ENG ABNORMALITIES OR VIBRATIONS DURING THIS FLT. NONE OF THE PRACTICE LNDGS WERE HARD ENOUGH TO MAKE US DO AN INSPECTION. THE ONLY REMEDIES I COULD SUGGEST WOULD BE TO SHIFT THE CTR OF GRAVITY MORE AFTWARD BY ADDING BALLAST WT IN THE REAR BAGGAGE COMPARTMENT, USING LESS THAN FULL FUEL TANKS FOR ONLY A 2 HR FLT, AND BY POSSIBLY USING ONLY 25 DEG FLAPS INSTEAD OF 40 DEG FULL FLAPS. ALL OF THIS WOULD HELP TO KEEP THE NOSEWHEEL AND PROPS ON AN EMPTY TRAINING FLT FROM MAKING GND CONTACT EARLY IN THE LNDG.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.