Narrative:

We had just completed the NDB 35 practice approach to norwood, ma. My check pilot is a 600 hour pilot with 300 in type. Norwood tower issued us missed approach instructions to take up a heading of 330 degree for a return VFR trip to lawrence, ma. Altimeter setting was from norwood ATIS. We proceeded on a 330 heading and were told to contact boston approach for advisories, which we did. We contacted boston approach and informed them of our return to lawrence. We climbed to 2800' to remain clear of the boston TCA. Upon reaching 2800' we leveled for cruise. Boston informed us of an air show at bedford hanscom and advised us to remain well clear of the hanscom air traffic area. Just after that another aircraft which I believe was an mlt single engine, glass cockpit, low wing, vintage wwii aircraft with blue-grey paint and military markings crossed our path at our altitude and less than 50' away. The flight path of the mlt was approximately 15 degree east of ours (estimate 345 degree magnetic) and overtook us at much greater speed from our 7 O'clock position. My only maneuver was a short, diving turn to the right but was more reflex than evasive. By the time I reacted the other aircraft was already past. Boston issued no advisories. I informed boston approach of a near miss and explained our situation. Boston said they now were tracking the other aircraft but were not in contact with them. Boston asked us to call the facility when we landed, which we did. I believe that we did everything in our control to avoid boston's TCA, used every available assistance from approach and, with 2 pilots aboard, practiced proper scan techniques and see and avoid methods. I am amazed that the other pilot could not see us. From the direction which he overtook us, we must have been in his sights for a significant time. My copilot even commented that, had this been a dogfight, the other aircraft would have had us in perfect firing position. I am a bit surprised that boston did not call such a traffic conflict especially in light of the jul 1,30 mile, mode C regulation which was in effect.

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Original NASA ASRS Text

Title: NMAC.

Narrative: WE HAD JUST COMPLETED THE NDB 35 PRACTICE APCH TO NORWOOD, MA. MY CHECK PLT IS A 600 HR PLT WITH 300 IN TYPE. NORWOOD TWR ISSUED US MISSED APCH INSTRUCTIONS TO TAKE UP A HDG OF 330 DEG FOR A RETURN VFR TRIP TO LAWRENCE, MA. ALTIMETER SETTING WAS FROM NORWOOD ATIS. WE PROCEEDED ON A 330 HDG AND WERE TOLD TO CONTACT BOSTON APCH FOR ADVISORIES, WHICH WE DID. WE CONTACTED BOSTON APCH AND INFORMED THEM OF OUR RETURN TO LAWRENCE. WE CLIMBED TO 2800' TO REMAIN CLEAR OF THE BOSTON TCA. UPON REACHING 2800' WE LEVELED FOR CRUISE. BOSTON INFORMED US OF AN AIR SHOW AT BEDFORD HANSCOM AND ADVISED US TO REMAIN WELL CLEAR OF THE HANSCOM ATA. JUST AFTER THAT ANOTHER ACFT WHICH I BELIEVE WAS AN MLT SINGLE ENGINE, GLASS COCKPIT, LOW WING, VINTAGE WWII ACFT WITH BLUE-GREY PAINT AND MIL MARKINGS CROSSED OUR PATH AT OUR ALT AND LESS THAN 50' AWAY. THE FLT PATH OF THE MLT WAS APPROX 15 DEG E OF OURS (ESTIMATE 345 DEG MAGNETIC) AND OVERTOOK US AT MUCH GREATER SPEED FROM OUR 7 O'CLOCK POSITION. MY ONLY MANEUVER WAS A SHORT, DIVING TURN TO THE RIGHT BUT WAS MORE REFLEX THAN EVASIVE. BY THE TIME I REACTED THE OTHER ACFT WAS ALREADY PAST. BOSTON ISSUED NO ADVISORIES. I INFORMED BOSTON APCH OF A NEAR MISS AND EXPLAINED OUR SITUATION. BOSTON SAID THEY NOW WERE TRACKING THE OTHER ACFT BUT WERE NOT IN CONTACT WITH THEM. BOSTON ASKED US TO CALL THE FAC WHEN WE LANDED, WHICH WE DID. I BELIEVE THAT WE DID EVERYTHING IN OUR CONTROL TO AVOID BOSTON'S TCA, USED EVERY AVAILABLE ASSISTANCE FROM APCH AND, WITH 2 PLTS ABOARD, PRACTICED PROPER SCAN TECHNIQUES AND SEE AND AVOID METHODS. I AM AMAZED THAT THE OTHER PLT COULD NOT SEE US. FROM THE DIRECTION WHICH HE OVERTOOK US, WE MUST HAVE BEEN IN HIS SIGHTS FOR A SIGNIFICANT TIME. MY COPLT EVEN COMMENTED THAT, HAD THIS BEEN A DOGFIGHT, THE OTHER ACFT WOULD HAVE HAD US IN PERFECT FIRING POSITION. I AM A BIT SURPRISED THAT BOSTON DID NOT CALL SUCH A TFC CONFLICT ESPECIALLY IN LIGHT OF THE JUL 1,30 MILE, MODE C REG WHICH WAS IN EFFECT.

Data retrieved from NASA's ASRS site as of August 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.