Narrative:

I was working a king air out of trenton, nj, climbing to 9000 ft, flying to pottstown VOR. North arrival was working the B747 inbound to phl. I got distraction and didn't point the king air out to north arrival. North arrival controller noticed the 2 aircraft converging and turned the heavy to avoid the king air. Supplemental information from acn 490910: being vectored to phl airport in VFR conditions, ATC turned us from our 180 degree heading left to 090 degrees. We were descending at about 1000 FPM. ATC, then in a panic, told us to steepen our bank angle. As we did that, we received a TA from TCASII, followed by a traffic RA. TCASII showed an aircraft at 12 O'clock position, 300 ft climbing. We quickly increased thrust to go around power and increased bank to 45 degrees and nose-up pitch. The airplane began to shudder and shake violently. We were unable to meet the TCASII climb requirements because of our bank angle and confign. We never saw the traffic, but without TCASII, the crew felt like we probably would have hit this airplane. When asked, ATC said they saw the traffic but were not talking to him. There was also no ATC handoff to the next controller. On follow-up, ATC admitted this was a total ATC mistake. They promised they would take 'in-house' action to prevent this from happening again.

Google
 

Original NASA ASRS Text

Title: NMAC BTWN A BEECH KING AIR CLBING OUT OF PHL AND A B747 ON ARR.

Narrative: I WAS WORKING A KING AIR OUT OF TRENTON, NJ, CLBING TO 9000 FT, FLYING TO POTTSTOWN VOR. N ARR WAS WORKING THE B747 INBOUND TO PHL. I GOT DISTR AND DIDN'T POINT THE KING AIR OUT TO N ARR. N ARR CTLR NOTICED THE 2 ACFT CONVERGING AND TURNED THE HVY TO AVOID THE KING AIR. SUPPLEMENTAL INFO FROM ACN 490910: BEING VECTORED TO PHL ARPT IN VFR CONDITIONS, ATC TURNED US FROM OUR 180 DEG HDG L TO 090 DEGS. WE WERE DSNDING AT ABOUT 1000 FPM. ATC, THEN IN A PANIC, TOLD US TO STEEPEN OUR BANK ANGLE. AS WE DID THAT, WE RECEIVED A TA FROM TCASII, FOLLOWED BY A TFC RA. TCASII SHOWED AN ACFT AT 12 O'CLOCK POS, 300 FT CLBING. WE QUICKLY INCREASED THRUST TO GAR PWR AND INCREASED BANK TO 45 DEGS AND NOSE-UP PITCH. THE AIRPLANE BEGAN TO SHUDDER AND SHAKE VIOLENTLY. WE WERE UNABLE TO MEET THE TCASII CLB REQUIREMENTS BECAUSE OF OUR BANK ANGLE AND CONFIGN. WE NEVER SAW THE TFC, BUT WITHOUT TCASII, THE CREW FELT LIKE WE PROBABLY WOULD HAVE HIT THIS AIRPLANE. WHEN ASKED, ATC SAID THEY SAW THE TFC BUT WERE NOT TALKING TO HIM. THERE WAS ALSO NO ATC HDOF TO THE NEXT CTLR. ON FOLLOW-UP, ATC ADMITTED THIS WAS A TOTAL ATC MISTAKE. THEY PROMISED THEY WOULD TAKE 'IN-HOUSE' ACTION TO PREVENT THIS FROM HAPPENING AGAIN.

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.