PA44 CFI AND STUDENT MADE AN UNEXPECTED TURN IN THE PATTERN AT IWA; DURING ENG OUT PRACTICE; AT NIGHT.

Narrative

I WAS WORKING WITH A STUDENT TOWARD A PVT MULTI-ENG ADD-ON RATING. THE STUDENT HAD BEEN SLOW TO APPLY CONCEPTS LEARNED IN GND SCHOOL WHEN FLYING THE AIRPLANE AND I HAD AGREED TO MEET WITH HIM AND FLY ON A SUNDAY NIGHT. THE EVENT WHICH I AM RPTING OCCURRED WHILE IN L TFC FOR RWY 30L AT IWA. I HAD GIVEN THE STUDENT A SINGLE ENG SIT WHILE ON THE DOWNWIND. THE STUDENT IMPROPERLY IDENTED THE SIMULATED INOP ENG AND HAD TROUBLE WITH THE ENG FAILURE STEPS FOR REDUCING DRAG AND SECURING THE ENG. AS WE NEARED OUR BASE TURN; WE WERE CLRED OPTION FOR RWY 30L AND ADVISED OF TFC ON FINAL FOR RWY 30C. THE STUDENT CONTINUED THE BASE TURN FOR RWY 30L AND I BEGAN TO LOOK FOR THE TFC FOR RWY 30C. I OBSERVED THE TFC AND CALLED TWR 'CLRED OPTION RWY 30L.' WHILE ON OUR BASE LEG THE TFC MOVED FROM R TO L IN FRONT OF US AND WAS NO FACTOR. WHEN I LOOKED BACK INSIDE THE AIRPLANE I OBSERVED MY STUDENT WITH THE YOKE NEAR FULL R AILERON DEFLECTION. I INSTINCTIVELY BEGAN TO CORRECT HIS INPUT WHEN I REALIZED HE HAD ALMOST FULL L RUDDER; R AILERON; AND THE AIRSPD WAS BELOW THE 88 KIAS BLUE LINE; SOMEWHERE IN THE 70 KIAS AREA. I QUICKLY TOLD THE STUDENT 'MY ACFT' AND RECOVERED FROM WHAT I BELIEVE TO BE A NEAR XCTL STALL SIT. AS IT WAS DARK AND THE HORIZON WAS NOT AVAILABLE; I USED THE ATTITUDE INDICATOR TO LEVEL THE WINGS AND CLB STRAIGHT AHEAD; ACROSS THE FINAL FOR RWY 30C AND RWY 30R! I CALLED TWR IMMEDIATELY AND ADVISED HIM WE WERE DEVIATING. HE (THE TWR) WAS HELPFUL AND ADVISED US TO TURN R BASE FOR RWY 30R. I TOLD HIM WE WOULD BE FULL STOP AND HE CLRED US TO LAND RWY 30L. HAD THIS OCCURRED DURING THE DAYTIME (HIGH TFC VOLUME); WE SURELY WOULD HAVE CAUSED A CONFLICT WITH TFC FOR RWY 30C AND RWY 30R.