Narrative:

It began as a final check for a student prior to the private chkride. The student and I practiced through maneuvers for about 1 hour then flew to another airport to pick up a cylinder for the flight school. As we were flying to vrb, we did not know of a fast moving line of thunderstorms heading in our direction. After departing vrb, the WX was deteriorating fast. I decided to file IFR back home. The problem arose when a commercial airliner went missed approach unexpectedly. The approach controller, with a nervous tone, told me to turn right 090 degrees because of the airliner going missed approach and asked me if I wanted to still try the ILS. I said yes, while turning to the right. For some reason I drifted back to a heading of 360 degrees while my attention was diverted to the approach I was about to do. The approach controller later told me to resume flying a heading of 360 degrees and I replied with 'roger.' I do not believe the controller was paying very much attention to me rather to the airliner who had to hold. The controller also stated the airliner was 'no factor.' I believe the stress of knowing the airliner had to go missed approach diverted the attention of me and the controller.

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Original NASA ASRS Text

Title: PA28-161 ACFT ON TRAINING FLT AND FLYING IN IFR WAS BEING VECTORED BY APCH CTLR WHEN AN ACR ACFT UNEXPECTEDLY EXECUTED A MISSED APCH. APCH CTLR CONTINUED VECTORING RPTR, BUT RPTR FAILED TO MAINTAIN ASSIGNED HDG.

Narrative: IT BEGAN AS A FINAL CHK FOR A STUDENT PRIOR TO THE PVT CHKRIDE. THE STUDENT AND I PRACTICED THROUGH MANEUVERS FOR ABOUT 1 HR THEN FLEW TO ANOTHER ARPT TO PICK UP A CYLINDER FOR THE FLT SCHOOL. AS WE WERE FLYING TO VRB, WE DID NOT KNOW OF A FAST MOVING LINE OF TSTMS HDG IN OUR DIRECTION. AFTER DEPARTING VRB, THE WX WAS DETERIORATING FAST. I DECIDED TO FILE IFR BACK HOME. THE PROB AROSE WHEN A COMMERCIAL AIRLINER WENT MISSED APCH UNEXPECTEDLY. THE APCH CTLR, WITH A NERVOUS TONE, TOLD ME TO TURN R 090 DEGS BECAUSE OF THE AIRLINER GOING MISSED APCH AND ASKED ME IF I WANTED TO STILL TRY THE ILS. I SAID YES, WHILE TURNING TO THE R. FOR SOME REASON I DRIFTED BACK TO A HDG OF 360 DEGS WHILE MY ATTN WAS DIVERTED TO THE APCH I WAS ABOUT TO DO. THE APCH CTLR LATER TOLD ME TO RESUME FLYING A HDG OF 360 DEGS AND I REPLIED WITH 'ROGER.' I DO NOT BELIEVE THE CTLR WAS PAYING VERY MUCH ATTN TO ME RATHER TO THE AIRLINER WHO HAD TO HOLD. THE CTLR ALSO STATED THE AIRLINER WAS 'NO FACTOR.' I BELIEVE THE STRESS OF KNOWING THE AIRLINER HAD TO GO MISSED APCH DIVERTED THE ATTN OF ME AND THE CTLR.

Data retrieved from NASA's ASRS site as of July 2007 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.