Baron 58/58TC
Flight Crew Flight Instructor; Flight Crew Commercial; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 67; Flight Crew Total 5510; Flight Crew Type 1120
Confusion; Situational Awareness; Training / Qualification
Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Took Evasive Action; Flight Crew Regained Aircraft Control
Human Factors
I was conducting a training and transition flight in a BE58 (Beechcraft Baron) for a qualified Commercial Pilot who had Multi-Engine Instructor and Instrument ratings. He had flown this aircraft on a prior long cross country flight and wanted to gain familiarity with the BE58. Prior to departing; we discussed that the pilot receiving the training would be the sole manipulator of the controls; unless an emergency situation developed. After a thorough preflight briefing and review of flight training objectives; we departed the aircraft's home base with the pilot receiving the training in the right seat; and we climbed above a scattered layer of clouds to an altitude of 7500 MSL for training maneuvers. Continuing with the planned training objectives; we accomplished turns; steep turns; selected power settings & expected performance; climbs; and descents. Then we slowed to Blue-Line speed for slow flight practice with gear and flaps extended. Following some turns; climbs; and descents at Blue-Line airspeed (100 knots); we began slowing to practice stall recoveries. At the first stall break; the Right Wing dropped and the pilot receiving the training reacted improperly with full Left yoke (Right aileron down) rather and Left Rudder; and immediately applied full power on both engines WITHOUT reducing the angle of attack. Instantly; the aircraft rolled to the right and entered a spin. I took the controls of the airplane; applied standard spin recovery technique (Power to idle; Ailerons neutral; Rudder opposite direction of the turn; and Elevators full forward.) The aircraft recovered from the spin; and I used appropriate yoke and rudder controls to recover to level flight. After checking proper action of controls following the spin recovery; we returned to [the departure airport]; executed a normal landing; and debriefed the incident with emphasis on proper stall recovery techniques.  A postflight inspection revealed a few areas of wrinkled skin on the wings but no evidence of significant damage.
An experienced Flight Instructor was surprised by the stall recovery technique of his commercial multi-engine rated student that resulted in a loss of control and aircraft spin. The instructor assumed control of the aircraft and performed the appropriate spin recovery actions.