Narrative:

Just after rotation on runway 22R we saw an aircraft (B727) executing a go around from runway 27. The nose was lowered so that we would pass below the aircraft. The controller quickly stated to 'maintain runway heading' instead of turning left to our originally assigned heading of 140 degrees. The controller then stated to 'turn right heading 270 degrees. Although the controller tried hard to protect against a collision, heading information could not have helped in this situation (too late). A simple 'traffic' call would have got our eyes out of the cockpit had we been looking inside. Had we not seen the aircraft going around and continued with our takeoff profile (including following the controller instructions) we would have come very close to hitting. Supplemental information from acn 374277 revealed the following information: on ILS approach to runway 27 at bos in VMC at 700 ft AGL, GPWS 'whoop, whoop, pull up' started sounding continuously. Aircraft was on GS, gear and flaps were rechked in landing confign (30 degrees flaps). Approach was over water at 300 ft GPWS 3W was positioned to 'off' and we initiated a missed approach to reaffirm everything was ok with the aircraft. As we started the published missed approach, tower issued a left turn to 140 degrees. A B737 was taking off on runway 22R. Tower asked if we had them in sight. We did (slightly below us and close in on the right side). Tower advised us to maintain visual separation. Both aircraft were in left turns to 140 degrees. With our belly up to the other aircraft, it was impossible to maintain visual contact. On TCASII, other aircraft was observed directly below us at -100 ft and climbing. No RA was issued because GPWS had been disabled. In order to maintain visual separation, we made an immediate reversal to a right turn. Other aircraft was observed passing directly below us in a left turn. Runway 27 and runway 22L aircraft are on different frequencys, and therefore, unaware of instructions given to other aircraft, and unable to talk to each other.

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Original NASA ASRS Text

Title: B737 ACFT ON TKOF SAW ACFT ABOVE JUST AFTER LIFTOFF IN A GAR. CTLR ISSUED RWY HDG CLRNC, BUT IN SPITE OF CTLR ATTEMPTS, BOTH ACFT HAD TO TAKE EVASIVE ACTION.

Narrative: JUST AFTER ROTATION ON RWY 22R WE SAW AN ACFT (B727) EXECUTING A GAR FROM RWY 27. THE NOSE WAS LOWERED SO THAT WE WOULD PASS BELOW THE ACFT. THE CTLR QUICKLY STATED TO 'MAINTAIN RWY HDG' INSTEAD OF TURNING L TO OUR ORIGINALLY ASSIGNED HDG OF 140 DEGS. THE CTLR THEN STATED TO 'TURN R HDG 270 DEGS. ALTHOUGH THE CTLR TRIED HARD TO PROTECT AGAINST A COLLISION, HDG INFO COULD NOT HAVE HELPED IN THIS SIT (TOO LATE). A SIMPLE 'TFC' CALL WOULD HAVE GOT OUR EYES OUT OF THE COCKPIT HAD WE BEEN LOOKING INSIDE. HAD WE NOT SEEN THE ACFT GOING AROUND AND CONTINUED WITH OUR TKOF PROFILE (INCLUDING FOLLOWING THE CTLR INSTRUCTIONS) WE WOULD HAVE COME VERY CLOSE TO HITTING. SUPPLEMENTAL INFO FROM ACN 374277 REVEALED THE FOLLOWING INFO: ON ILS APCH TO RWY 27 AT BOS IN VMC AT 700 FT AGL, GPWS 'WHOOP, WHOOP, PULL UP' STARTED SOUNDING CONTINUOUSLY. ACFT WAS ON GS, GEAR AND FLAPS WERE RECHKED IN LNDG CONFIGN (30 DEGS FLAPS). APCH WAS OVER WATER AT 300 FT GPWS 3W WAS POSITIONED TO 'OFF' AND WE INITIATED A MISSED APCH TO REAFFIRM EVERYTHING WAS OK WITH THE ACFT. AS WE STARTED THE PUBLISHED MISSED APCH, TWR ISSUED A L TURN TO 140 DEGS. A B737 WAS TAKING OFF ON RWY 22R. TWR ASKED IF WE HAD THEM IN SIGHT. WE DID (SLIGHTLY BELOW US AND CLOSE IN ON THE R SIDE). TWR ADVISED US TO MAINTAIN VISUAL SEPARATION. BOTH ACFT WERE IN L TURNS TO 140 DEGS. WITH OUR BELLY UP TO THE OTHER ACFT, IT WAS IMPOSSIBLE TO MAINTAIN VISUAL CONTACT. ON TCASII, OTHER ACFT WAS OBSERVED DIRECTLY BELOW US AT -100 FT AND CLBING. NO RA WAS ISSUED BECAUSE GPWS HAD BEEN DISABLED. IN ORDER TO MAINTAIN VISUAL SEPARATION, WE MADE AN IMMEDIATE REVERSAL TO A R TURN. OTHER ACFT WAS OBSERVED PASSING DIRECTLY BELOW US IN A L TURN. RWY 27 AND RWY 22L ACFT ARE ON DIFFERENT FREQS, AND THEREFORE, UNAWARE OF INSTRUCTIONS GIVEN TO OTHER ACFT, AND UNABLE TO TALK TO EACH OTHER.

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.