PLT OF AN SMA SEL CPR ACFT EXPERIENCED SPATIAL DISORIENTATION DURING REQUIRED TURNS AFTER TKOF RESULTING IN A DEV FROM ASSIGNED HDG.

Narrative

AFTER TKOF ON RWY 17; TWR GAVE ME INSTRUCTIONS TO TURN R TO HDG 330 DEGS; TO KEEP ME N OF THE LOC OF RWY 27. I BEGAN THE TURN WITH VISUAL REF TO THE GND AT A HIGHER THAN NORMAL RATE OF TURN. ABOUT 1/2 WAY THROUGH THE TURN; I ENTERED THE CLOUDS AND BEGAN FLYING ON INSTS. JUST AS I CAME TO HDG 330 DEGS; THE TWR CLRED ME DIRECT TO THE MXE VOR SO I IMMEDIATELY ROLLED FROM A R TURN TO A L TURN TO HDG 290 DEGS. THE TWR TOLD ME TO CONTACT DEP CTL. I DIVERTED MY ATTN FROM THE INSTS MOMENTARILY TO CHANGE THE RADIO FREQ. I CALLED DEP AND THEY CLRED ME TO THE MXE VOR AND TO CLB TO 5000 FT. AS I LOOKED BACK TO THE INSTS THE PLANE WAS BANKED TO THE L 15-20 DEGS. I ROLLED BACK TO THE R FOR CORRECTION BUT THE PLANE ROLLED TOO FAR SO I BANKED BACK TO THE L. I BEGAN TO OVER CTL THE AIRPLANE AND TO 'CHASE THE INSTS.' I BANKED THE PLANE 3 OR 4 TIMES AND EACH TIME I OVER CTLED. I THOUGHT THAT MY INSTS MIGHT BE MALFUNCTIONING AND I REALIZED THAT I WAS BECOMING DISORIENTED SO I DECIDED TO USE THE RECOVERY FROM UNUSUAL ATTITUDES TECHNIQUE I LEARNED IN TRAINING. I CTRED THE SLIP-SKID BALL WITH RUDDERS AND STOPPED THE TURNING WITH AILERONS; REFING THE TURN INDICATOR. THE PLANE STABILIZED AND I REGAINED MY ORIENTATION. THE PLANE WAS OFF COURSE AND ATC GAVE ME VECTORS TO GET BACK ON COURSE. THE REST OF THE FLT WAS NORMAL AND ALL INSTS WORKED NORMALLY. THE DISORIENTATION WAS CAUSED BY THE FASTER THAN NORMAL TURN ON TKOF; THE TRANSITION FROM VISUAL TO INST REF; MULTIPLE TURNS IN IMC; AND MOMENTARY DIVERSION FROM THE INSTS; ALL IN A SHORT PERIOD OF TIME. PLTS SHOULD HAVE EXTRA VIGILANCE WITH UNUSUAL OR NON-ROUTINE MANEUVERS UNDER IMC. ALSO; TRAINING AND PRACTICE WERE ESSENTIAL TO RECOGNIZE THE PROB AND EXECUTE A PROPER RECOVERY; SINCE THE PROB OCCURRED UNEXPECTEDLY.