Narrative:

On IFR training flight from thv (york, PA) to fdk (frederick, md) I was advised to cancel IFR on ground after vectors to ILS runway 23 for final course. WX was approximately 2500 ft overcast, broke out on ILS/localizer and saw traffic in pattern (3 aircraft) rolling on runway 8 waiting to depart. I called missed approach to traffic and entered traffic pattern at upwind. At this point, someone initiated a takeoff roll on the runway (runway 23) that I was overflying. This aircraft was a cherokee 6. Soon he was climbing up just ahead of us and began to turn crosswind. I told my student to turn crosswind to downwind. At this point we were on downwind, there was an aircraft on final, and the cherokee 6 on crosswind to downwind turn. Although at this point a substantial amount of my attention was devoted to traffic avoidance, we continued a normal traffic pattern and landed on runway 23. The cherokee was right behind us, so I planned to depart the active at the first taxiway after deceleration, but another aircraft was taxiing on that taxiway toward our intended turnoff from runway. Meanwhile, the cherokee 6 called short final. I was very concerned. The taxiing aircraft would not give way to us to depart the active runway, and the cherokee 6 showed no sign of going around and I was in between. I wedged the aircraft just off runway surface, but could not get past hold short line because of other aircraft. The cherokee 6 landed, the taxiing aircraft taxied past and I followed. In the confusion and disruption, I forgot to close IFR flight plan.

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Original NASA ASRS Text

Title: A C172 INSTRUCTOR AND STUDENT, UNABLE TO FULLY CLR RWY AFTER LNDG ACFT ON SHORT FINAL, LANDED ANYWAY.

Narrative: ON IFR TRAINING FLT FROM THV (YORK, PA) TO FDK (FREDERICK, MD) I WAS ADVISED TO CANCEL IFR ON GND AFTER VECTORS TO ILS RWY 23 FOR FINAL COURSE. WX WAS APPROX 2500 FT OVCST, BROKE OUT ON ILS/LOC AND SAW TFC IN PATTERN (3 ACFT) ROLLING ON RWY 8 WAITING TO DEPART. I CALLED MISSED APCH TO TFC AND ENTERED TFC PATTERN AT UPWIND. AT THIS POINT, SOMEONE INITIATED A TKOF ROLL ON THE RWY (RWY 23) THAT I WAS OVERFLYING. THIS ACFT WAS A CHEROKEE 6. SOON HE WAS CLBING UP JUST AHEAD OF US AND BEGAN TO TURN XWIND. I TOLD MY STUDENT TO TURN XWIND TO DOWNWIND. AT THIS POINT WE WERE ON DOWNWIND, THERE WAS AN ACFT ON FINAL, AND THE CHEROKEE 6 ON XWIND TO DOWNWIND TURN. ALTHOUGH AT THIS POINT A SUBSTANTIAL AMOUNT OF MY ATTN WAS DEVOTED TO TFC AVOIDANCE, WE CONTINUED A NORMAL TFC PATTERN AND LANDED ON RWY 23. THE CHEROKEE WAS RIGHT BEHIND US, SO I PLANNED TO DEPART THE ACTIVE AT THE FIRST TXWY AFTER DECELERATION, BUT ANOTHER ACFT WAS TAXIING ON THAT TXWY TOWARD OUR INTENDED TURNOFF FROM RWY. MEANWHILE, THE CHEROKEE 6 CALLED SHORT FINAL. I WAS VERY CONCERNED. THE TAXIING ACFT WOULD NOT GIVE WAY TO US TO DEPART THE ACTIVE RWY, AND THE CHEROKEE 6 SHOWED NO SIGN OF GOING AROUND AND I WAS IN BTWN. I WEDGED THE ACFT JUST OFF RWY SURFACE, BUT COULD NOT GET PAST HOLD SHORT LINE BECAUSE OF OTHER ACFT. THE CHEROKEE 6 LANDED, THE TAXIING ACFT TAXIED PAST AND I FOLLOWED. IN THE CONFUSION AND DISRUPTION, I FORGOT TO CLOSE IFR FLT PLAN.

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.