Narrative:

On a training flight; after landing and while rolling out; I asked my student to retract my flaps (I was flying the plane). The student accidentally retracted the landing gear instead of the flaps. We were rolling approximately 50 KTS; and apparently hit a bump in the runway that unloaded the weight of the plane on the gear; and caused it to retract. The nosewheel collapsed and the propeller struck the ground several times. The main gear partially collapsed. No significant structural damage was observed although the propeller strike most likely destroyed the engine. In the future; I will not ask a student to retract the flaps on rollout; unless it is absolutely necessary and the student confirms their actions before taking them. The above occurred after landing on rollout. Supplemental information from acn 677796: this was my first flight in a retractable gear airplane. On the flight down in a BE36; I was instructed in the operation of the flaps and operated them after landing. When we landed; we changed planes to a BE36 that was an older model. After landing; during rollout at about 50 KTS the pilot instructed me to retract the flaps. I retracted the gear. In this model of bonanza the gear is on the right side and the flaps are on the left unlike the other model. Factors: fatigue from the lack of sleep. Unfamiliarity of the airplane system (gear).

Related reports:

Google
 

Original NASA ASRS Text

Title: ON LNDG ROLLOUT; BE36 STUDENT PLT INADVERTENTLY RETRACTED THE LNDG GEAR WHEN DIRECTED TO RETRACT THE FLAPS BY THE INSTRUCTOR PLT.

Narrative: ON A TRAINING FLT; AFTER LNDG AND WHILE ROLLING OUT; I ASKED MY STUDENT TO RETRACT MY FLAPS (I WAS FLYING THE PLANE). THE STUDENT ACCIDENTALLY RETRACTED THE LNDG GEAR INSTEAD OF THE FLAPS. WE WERE ROLLING APPROX 50 KTS; AND APPARENTLY HIT A BUMP IN THE RWY THAT UNLOADED THE WT OF THE PLANE ON THE GEAR; AND CAUSED IT TO RETRACT. THE NOSEWHEEL COLLAPSED AND THE PROP STRUCK THE GND SEVERAL TIMES. THE MAIN GEAR PARTIALLY COLLAPSED. NO SIGNIFICANT STRUCTURAL DAMAGE WAS OBSERVED ALTHOUGH THE PROP STRIKE MOST LIKELY DESTROYED THE ENG. IN THE FUTURE; I WILL NOT ASK A STUDENT TO RETRACT THE FLAPS ON ROLLOUT; UNLESS IT IS ABSOLUTELY NECESSARY AND THE STUDENT CONFIRMS THEIR ACTIONS BEFORE TAKING THEM. THE ABOVE OCCURRED AFTER LNDG ON ROLLOUT. SUPPLEMENTAL INFO FROM ACN 677796: THIS WAS MY FIRST FLT IN A RETRACTABLE GEAR AIRPLANE. ON THE FLT DOWN IN A BE36; I WAS INSTRUCTED IN THE OP OF THE FLAPS AND OPERATED THEM AFTER LNDG. WHEN WE LANDED; WE CHANGED PLANES TO A BE36 THAT WAS AN OLDER MODEL. AFTER LNDG; DURING ROLLOUT AT ABOUT 50 KTS THE PLT INSTRUCTED ME TO RETRACT THE FLAPS. I RETRACTED THE GEAR. IN THIS MODEL OF BONANZA THE GEAR IS ON THE R SIDE AND THE FLAPS ARE ON THE L UNLIKE THE OTHER MODEL. FACTORS: FATIGUE FROM THE LACK OF SLEEP. UNFAMILIARITY OF THE AIRPLANE SYS (GEAR).

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.