Narrative:

While doing the VOR DME-a approach to teterboro, nj, on sep/tue/95 we just passed the wanes intersection at 3000 ft MSL. I was looking down at the approach chart to see what the next fix was. When I looked up again I saw a cessna 100 series aircraft right in front of my aircraft at approximately the same altitude and descending. Just as the other aircraft went under my left wing ny approach called the traffic at less than 1 mi. After talking to approach about this we lost our chain of thought and am not sure that we passed clifo intersection at 2000 ft. Supplemental information from acn 315859: I was occupying right seat of a king air BE2H performing PNF duties. My attention was divided both inside and out of the cockpit, as was the PF checking the approach plate fixes and altitudes. PF exclaimed 'oh, my gosh!' I looked up to see a light colored C172 (?) descending below and just outboard of our left wingtip. Approach called traffic just immediately prior to the PF's sighting it, but we would have had little time to react to his call. He immediately apologized and asked the aircraft's altitude, we estimated 2950 ft to 3000 ft. We were consequently so distraught that approach or tower had to admonish us to descend to mandatory altitude of 2000 ft MSL at 'clifo' intersection. Perhaps greater familiarity with the approach might have allowed us to spend more time outside of cockpit, but we had just passed a waypoint and were checking the next phase and setting the altitude alerter. Two heads in the cockpit at the same time didn't help.

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Original NASA ASRS Text

Title: A C172 PLT PENETRATED CLASS B WITHOUT A CLRNC AND CONFLICTED WITH BE20 ON APCH. NO RESPONSE TIME.

Narrative: WHILE DOING THE VOR DME-A APCH TO TETERBORO, NJ, ON SEP/TUE/95 WE JUST PASSED THE WANES INTXN AT 3000 FT MSL. I WAS LOOKING DOWN AT THE APCH CHART TO SEE WHAT THE NEXT FIX WAS. WHEN I LOOKED UP AGAIN I SAW A CESSNA 100 SERIES ACFT RIGHT IN FRONT OF MY ACFT AT APPROX THE SAME ALT AND DSNDING. JUST AS THE OTHER ACFT WENT UNDER MY L WING NY APCH CALLED THE TFC AT LESS THAN 1 MI. AFTER TALKING TO APCH ABOUT THIS WE LOST OUR CHAIN OF THOUGHT AND AM NOT SURE THAT WE PASSED CLIFO INTXN AT 2000 FT. SUPPLEMENTAL INFO FROM ACN 315859: I WAS OCCUPYING R SEAT OF A KING AIR BE2H PERFORMING PNF DUTIES. MY ATTN WAS DIVIDED BOTH INSIDE AND OUT OF THE COCKPIT, AS WAS THE PF CHKING THE APCH PLATE FIXES AND ALTS. PF EXCLAIMED 'OH, MY GOSH!' I LOOKED UP TO SEE A LIGHT COLORED C172 (?) DSNDING BELOW AND JUST OUTBOARD OF OUR L WINGTIP. APCH CALLED TFC JUST IMMEDIATELY PRIOR TO THE PF'S SIGHTING IT, BUT WE WOULD HAVE HAD LITTLE TIME TO REACT TO HIS CALL. HE IMMEDIATELY APOLOGIZED AND ASKED THE ACFT'S ALT, WE ESTIMATED 2950 FT TO 3000 FT. WE WERE CONSEQUENTLY SO DISTRAUGHT THAT APCH OR TWR HAD TO ADMONISH US TO DSND TO MANDATORY ALT OF 2000 FT MSL AT 'CLIFO' INTXN. PERHAPS GREATER FAMILIARITY WITH THE APCH MIGHT HAVE ALLOWED US TO SPEND MORE TIME OUTSIDE OF COCKPIT, BUT WE HAD JUST PASSED A WAYPOINT AND WERE CHKING THE NEXT PHASE AND SETTING THE ALT ALERTER. TWO HEADS IN THE COCKPIT AT THE SAME TIME DIDN'T HELP.

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.