Narrative:

I am a cfii who was attempting to teach a student pilot, with about 13 flight hours, how to land. The student had accomplished several lndgs without my assistance, but most of the time I was still having to assist with the flare and touchdown. We had spent about 45 mins in the traffic pattern and had accomplished 7 touch-and-goes when my student indicated that he was tired and requested that this be the last landing. I noticed that he was perspiring and I agreed, while encouraging him that this landing would be a 'good one.' we had about an 8 KT crosswind and I had instructed him repeatedly to maintain the 'centerline' on landing, because we had landed on the right portion of the 150 ft wide runway several times. This being the final landing of the day, I had decided that I would try my best to allow my student to accomplish this landing without any assistance from me. As we started to flare, we ballooned up slightly and then dropped firmly onto the runway. Once again we had drifted to the right side of the runway. When we hit the ground hard, we bounced up into the air and continued to drift toward the right edge of the runway. As I grabbed the controls and attempted to add some power and slightly lower the nose to dampen the bouncing, we struck the ground once again. At this time I noticed that we had drifted completely off of the runway and we were in the grass. Fearing a possible propeller strike or loss of control, I advanced full throttle, pushed the carburetor heat in, and raised the flaps. I then attempted to firmly rotate the airplane, but the controls were sluggish and I feared a stall situation might be arising. We had a nose-high attitude, but we were not accelerating. I lowered the nose, pulled the power to idle, and decided to 'ride out' the landing in the grass. The ground was set and the grass was not closely cut, and this contributed to my lack of acceleration. We drove across an intersecting runway (which was inactive at the time) and continued in the grass while slowing. I exited the grass as I approached a taxiway and was cleared by the tower to taxi to the ramp. I am unaware of any damage to runway or taxi lights, but there was some minor damage to the right wheel of the plane. I feel that my reactions to the hard landing were not as quick as they should have been. I failed to take seriously enough the mental and physical fatigue of my student. I also decided that the student would land this time without any of my assistance. I also allowed my student to continue an attempted landing while not over the centerline of the runway. Luckily, no one was injured and the plane was only slightly damaged. I have leaned from this incident and I hope that others may as well.

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Original NASA ASRS Text

Title: C152 INSTRUCTOR PLT HAS A RWY EXCURSION AFTER TAKING CTL OF ACFT FROM STUDENT PLT WHO HAD EXPERIENCED A HARD LNDG AT MGM.

Narrative: I AM A CFII WHO WAS ATTEMPTING TO TEACH A STUDENT PLT, WITH ABOUT 13 FLT HRS, HOW TO LAND. THE STUDENT HAD ACCOMPLISHED SEVERAL LNDGS WITHOUT MY ASSISTANCE, BUT MOST OF THE TIME I WAS STILL HAVING TO ASSIST WITH THE FLARE AND TOUCHDOWN. WE HAD SPENT ABOUT 45 MINS IN THE TFC PATTERN AND HAD ACCOMPLISHED 7 TOUCH-AND-GOES WHEN MY STUDENT INDICATED THAT HE WAS TIRED AND REQUESTED THAT THIS BE THE LAST LNDG. I NOTICED THAT HE WAS PERSPIRING AND I AGREED, WHILE ENCOURAGING HIM THAT THIS LNDG WOULD BE A 'GOOD ONE.' WE HAD ABOUT AN 8 KT XWIND AND I HAD INSTRUCTED HIM REPEATEDLY TO MAINTAIN THE 'CTRLINE' ON LNDG, BECAUSE WE HAD LANDED ON THE R PORTION OF THE 150 FT WIDE RWY SEVERAL TIMES. THIS BEING THE FINAL LNDG OF THE DAY, I HAD DECIDED THAT I WOULD TRY MY BEST TO ALLOW MY STUDENT TO ACCOMPLISH THIS LNDG WITHOUT ANY ASSISTANCE FROM ME. AS WE STARTED TO FLARE, WE BALLOONED UP SLIGHTLY AND THEN DROPPED FIRMLY ONTO THE RWY. ONCE AGAIN WE HAD DRIFTED TO THE R SIDE OF THE RWY. WHEN WE HIT THE GND HARD, WE BOUNCED UP INTO THE AIR AND CONTINUED TO DRIFT TOWARD THE R EDGE OF THE RWY. AS I GRABBED THE CTLS AND ATTEMPTED TO ADD SOME PWR AND SLIGHTLY LOWER THE NOSE TO DAMPEN THE BOUNCING, WE STRUCK THE GND ONCE AGAIN. AT THIS TIME I NOTICED THAT WE HAD DRIFTED COMPLETELY OFF OF THE RWY AND WE WERE IN THE GRASS. FEARING A POSSIBLE PROP STRIKE OR LOSS OF CTL, I ADVANCED FULL THROTTLE, PUSHED THE CARB HEAT IN, AND RAISED THE FLAPS. I THEN ATTEMPTED TO FIRMLY ROTATE THE AIRPLANE, BUT THE CTLS WERE SLUGGISH AND I FEARED A STALL SIT MIGHT BE ARISING. WE HAD A NOSE-HIGH ATTITUDE, BUT WE WERE NOT ACCELERATING. I LOWERED THE NOSE, PULLED THE PWR TO IDLE, AND DECIDED TO 'RIDE OUT' THE LNDG IN THE GRASS. THE GND WAS SET AND THE GRASS WAS NOT CLOSELY CUT, AND THIS CONTRIBUTED TO MY LACK OF ACCELERATION. WE DROVE ACROSS AN INTERSECTING RWY (WHICH WAS INACTIVE AT THE TIME) AND CONTINUED IN THE GRASS WHILE SLOWING. I EXITED THE GRASS AS I APCHED A TXWY AND WAS CLRED BY THE TWR TO TAXI TO THE RAMP. I AM UNAWARE OF ANY DAMAGE TO RWY OR TAXI LIGHTS, BUT THERE WAS SOME MINOR DAMAGE TO THE R WHEEL OF THE PLANE. I FEEL THAT MY REACTIONS TO THE HARD LNDG WERE NOT AS QUICK AS THEY SHOULD HAVE BEEN. I FAILED TO TAKE SERIOUSLY ENOUGH THE MENTAL AND PHYSICAL FATIGUE OF MY STUDENT. I ALSO DECIDED THAT THE STUDENT WOULD LAND THIS TIME WITHOUT ANY OF MY ASSISTANCE. I ALSO ALLOWED MY STUDENT TO CONTINUE AN ATTEMPTED LNDG WHILE NOT OVER THE CTRLINE OF THE RWY. LUCKILY, NO ONE WAS INJURED AND THE PLANE WAS ONLY SLIGHTLY DAMAGED. I HAVE LEANED FROM THIS INCIDENT AND I HOPE THAT OTHERS MAY AS WELL.

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.