Instructor reported the student over corrected in the landing maneuver resulting in wing/ground cont...

Attributes
ACN	1578278
Time
Date	201809
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	Sail Plane
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 Flight Instructor Flight Crew Commercial
Experience	Flight Crew Last 90 Days 48 Flight Crew Total 2433 Flight Crew Type 54
Events
Anomaly	Deviation - Procedural Published Material / Policy Ground Event / Encounter Ground Strike - Aircraft Ground Event / Encounter Loss Of Aircraft Control

Narrative:

During training flight; [a] flight review; with experienced private glider pilot; we were doing a 'no spoiler' landing on runway 36. On final about 100 feet up; we were still high; I directed pilot to slip a little more (nose right; left bank). Glider was then coming down more aggressively. I directed pilot to get out of slip. Landing speed was about 50 knots. He then pushed hard on the left rudder; which swung the nose from 20 degrees to the right to 20 degrees to the left in about 2 seconds.momentum of rotation continued counter clockwise despite right rudder application. We were about 5 feet above grass field adjacent to grass runway. Left wing was down about 20 degrees and hit grass first followed by the glider which landed sideways in a level attitude going west from about 3 feet above ground. Glider came to a stop in about 20 feet pointing south. The sudden stop; going sideways; tore the landing skid from the aircraft. The landing wheel was intact and could be used to tow the glider back to the beginning of the field.

Original NASA ASRS Text

Title: Instructor reported the student over corrected in the landing maneuver resulting in wing/ground contact.

Narrative: During training flight; [a] Flight Review; with experienced private glider pilot; we were doing a 'no spoiler' landing on Runway 36. On final about 100 feet up; we were still high; I directed pilot to slip a little more (nose right; left bank). Glider was then coming down more aggressively. I directed pilot to get out of slip. Landing speed was about 50 knots. He then pushed hard on the left rudder; which swung the nose from 20 degrees to the right to 20 degrees to the left in about 2 seconds.Momentum of rotation continued counter clockwise despite right rudder application. We were about 5 feet above grass field adjacent to grass runway. Left wing was down about 20 degrees and hit grass first followed by the glider which landed sideways in a level attitude going west from about 3 feet above ground. Glider came to a stop in about 20 feet pointing south. The sudden stop; going sideways; tore the landing skid from the aircraft. The landing wheel was intact and could be used to tow the glider back to the beginning of the field.

Data retrieved from NASA's ASRS site 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.