Narrative:

The purpose of the lesson was to provide a student with the required spin training for his CFI certificate. The weight and balance showed that the airplane was within center of gravity limits in the utility category. The lesson began with a preflight inspection of the C172; familiarizing him with the v-spds; preflight peculiarities of the cessna and then we discussed what we were going to do in the lesson; including a discussion of spin characteristics; stall recognition; spin entry and recovery. After that we flew north to the practice area and climbed to 6500 ft where we proceeded to do clearing turns and then a couple of spin entries from both a power-on and power-off situation. Then; I slowed the airplane to approach speed; put on flaps to demonstrate what might happen in a xctled situation when a student turns from base to final; but intended to bring the flaps up before spin entry; but as I explained the lesson to the student; I forgot about the flaps. When I remembered that the flaps were down we were into the spin. We immediately recovered from the spin; leveled off and retracted the flaps; but the damage had been done. We returned to the airport where we discovered that the flap on the right wing had sustained stress damage.

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Original NASA ASRS Text

Title: C172 INSTRUCTOR; DEMONSTRATING A SPIN WITH FLAPS EXTENDED; FORGETS TO RETRACT THEM PRIOR TO SPIN ENTRY CAUSING STRESS DAMAGE TO THE RIGHT WING FLAP.

Narrative: THE PURPOSE OF THE LESSON WAS TO PROVIDE A STUDENT WITH THE REQUIRED SPIN TRAINING FOR HIS CFI CERTIFICATE. THE WT AND BAL SHOWED THAT THE AIRPLANE WAS WITHIN CTR OF GRAVITY LIMITS IN THE UTILITY CATEGORY. THE LESSON BEGAN WITH A PREFLT INSPECTION OF THE C172; FAMILIARIZING HIM WITH THE V-SPDS; PREFLT PECULIARITIES OF THE CESSNA AND THEN WE DISCUSSED WHAT WE WERE GOING TO DO IN THE LESSON; INCLUDING A DISCUSSION OF SPIN CHARACTERISTICS; STALL RECOGNITION; SPIN ENTRY AND RECOVERY. AFTER THAT WE FLEW NORTH TO THE PRACTICE AREA AND CLBED TO 6500 FT WHERE WE PROCEEDED TO DO CLRING TURNS AND THEN A COUPLE OF SPIN ENTRIES FROM BOTH A PWR-ON AND PWR-OFF SIT. THEN; I SLOWED THE AIRPLANE TO APCH SPD; PUT ON FLAPS TO DEMONSTRATE WHAT MIGHT HAPPEN IN A XCTLED SIT WHEN A STUDENT TURNS FROM BASE TO FINAL; BUT INTENDED TO BRING THE FLAPS UP BEFORE SPIN ENTRY; BUT AS I EXPLAINED THE LESSON TO THE STUDENT; I FORGOT ABOUT THE FLAPS. WHEN I REMEMBERED THAT THE FLAPS WERE DOWN WE WERE INTO THE SPIN. WE IMMEDIATELY RECOVERED FROM THE SPIN; LEVELED OFF AND RETRACTED THE FLAPS; BUT THE DAMAGE HAD BEEN DONE. WE RETURNED TO THE ARPT WHERE WE DISCOVERED THAT THE FLAP ON THE R WING HAD SUSTAINED STRESS DAMAGE.

Data retrieved from NASA's ASRS site as of January 2009 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.