A BE76 instructor pilot reported that his student lost control of the aircraft in a wind gust at fiv...

Narrative:

On final approach to runway 34 the aircraft was stabilized and we were set for a touch and go. Winds were approx ten gusting fifteen knots about ten degrees west of runway heading. My student had full control of the aircraft until five feet off the ground. A gust of wind picked up the left wing causing the aircraft to bank well over thirty degrees. I immediately applied full left rudder while taking control from my student. At this point our airspeed was insufficient to perform a go around. When the plane touched down on the runway we were to the east of center line approximately twenty feet facing the grass/taxiway. I'm estimating fifty degrees to the right is where the nose of the aircraft ended up. I could not stop the aircraft before rolling off the runway through tall grass and onto the parallel taxiway facing northbound. After parking the aircraft on the ramp I called my company to report. Our chief pilot sent one of our a&P mechanics to inspect the plane to see if we needed a ferry permit. After a complete inspection was done we came to the conclusion that the damage was limited to the wing tip and about an inch of paint was scrapped off the aileron. I believed; as well as the mechanic; that this was cosmetic damage only. All this was reported back to the head of maintenance and my chief pilot. After clearing the flight with my company I was instructed to and flew the aircraft back to our facility. My chief did ask if I felt comfortable flying it back; which I did. The following morning I was notified that after further inspections done by our maintenance in the hangar that the wing spar may be bent out of shape causing the aircraft to be un-airworthy. Human factors: I believe that I did everything possible to recover the aircraft from this unusual condition. I reacted as soon as I could to correct the aircraft. This was the third flight of my day and I was not tired and well rested from the previous night. I relied heavily on the mechanics advice and expertise in the decision to fly the aircraft back to our facility.

Original NASA ASRS Text

Title: A BE76 Instructor Pilot reported that his student lost control of the aircraft in a wind gust at five feet during landing. The aircraft exited the runway as the Instructor gained control and was flown to home base where it was later determined that it had wing damage.

Narrative: On final approach to Runway 34 the aircraft was stabilized and we were set for a touch and go. Winds were approx ten gusting fifteen knots about ten degrees west of runway heading. My student had full control of the aircraft until five feet off the ground. A gust of wind picked up the left wing causing the aircraft to bank well over thirty degrees. I immediately applied full left rudder while taking control from my student. At this point our airspeed was insufficient to perform a go around. When the plane touched down on the runway we were to the east of center line approximately twenty feet facing the grass/taxiway. I'm estimating fifty degrees to the right is where the nose of the aircraft ended up. I could not stop the aircraft before rolling off the runway through tall grass and onto the parallel taxiway facing northbound. After parking the aircraft on the ramp I called my company to report. Our chief pilot sent one of our A&P Mechanics to inspect the plane to see if we needed a ferry permit. After a complete inspection was done we came to the conclusion that the damage was limited to the wing tip and about an inch of paint was scrapped off the aileron. I believed; as well as the mechanic; that this was cosmetic damage only. All this was reported back to the head of Maintenance and my Chief Pilot. After clearing the flight with my Company I was instructed to and flew the aircraft back to our facility. My Chief did ask if I felt comfortable flying it back; which I did. The following morning I was notified that after further inspections done by our maintenance in the hangar that the wing spar may be bent out of shape causing the aircraft to be UN-airworthy. Human Factors: I believe that I did everything possible to recover the aircraft from this unusual condition. I reacted as soon as I could to correct the aircraft. This was the third flight of my day and I was not tired and well rested from the previous night. I relied heavily on the mechanics advice and expertise in the decision to fly the aircraft back to our facility.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	886277
Time
Date	201005
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Duchess 76
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	None
Flight Plan	None
Person 1
Function	Pilot Not Flying Instructor
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Instructor Flight Crew Commercial
Experience	Flight Crew Last 90 Days 190 Flight Crew Total 1163 Flight Crew Type 83.8
Events
Anomaly	Ground Excursion Runway Inflight Event / Encounter Weather / Turbulence Inflight Event / Encounter Loss Of Aircraft Control

A BE76 instructor pilot reported that his student lost control of the aircraft in a wind gust at five feet during landing. The aircraft exited the runway as the instructor gained control and was flown to home base where it was later determined that it had wing damage.