Narrative:

Air carrier X cleared for takeoff on runway 16R at slc. When I put the gear up and looked back outside I saw small aircraft X to our left at 11 O'clock, at this time we were about 200' AGL. I called the traffic out, the captain indicated that he saw the traffic. I said that it looked as if it may be paralleling our course and it may have come from runway 16L. I felt that it was unusual for the tower not to notify us of traffic this close no matter what his direction of travel was. At this time slc tower issued a heading. I took my eyes off the traffic to pick up the microphone at the same time I felt the captain pull the nose up and looked outside to see the aircraft pass directly under the nose very close! The traffic was not parallel but was headed right for us on a 30 degree intercept. I estimate that small aircraft X was at 1000' AGL while we were between 1100' and 1200' AGL. I asked the tower about the traffic that we had just missed and got no response. I then asked the tower to say the heading again, because I had forgotten what it was in all the excitement. The controller issued the heading again after a long pause. I asked the controller what the aircraft was doing off the end of the runway? His response was 'it made a wrong turn.' this whole event took place in about 5 seconds (time of sighting to time of evasive action). If I had started my scan from right to left instead of left to right you might have been reading about this in the paper. I can't help thinking that if we had a TCAS system it would not have been nearly as close.

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Original NASA ASRS Text

Title: SMA Y MADE WRONG DIRECTION TURN AFTER TKOF HAD NMAC WITH ACR X. PLTDEV.

Narrative: ACR X CLRED FOR TKOF ON RWY 16R AT SLC. WHEN I PUT THE GEAR UP AND LOOKED BACK OUTSIDE I SAW SMA X TO OUR L AT 11 O'CLOCK, AT THIS TIME WE WERE ABOUT 200' AGL. I CALLED THE TFC OUT, THE CAPT INDICATED THAT HE SAW THE TFC. I SAID THAT IT LOOKED AS IF IT MAY BE PARALLELING OUR COURSE AND IT MAY HAVE COME FROM RWY 16L. I FELT THAT IT WAS UNUSUAL FOR THE TWR NOT TO NOTIFY US OF TFC THIS CLOSE NO MATTER WHAT HIS DIRECTION OF TRAVEL WAS. AT THIS TIME SLC TWR ISSUED A HDG. I TOOK MY EYES OFF THE TFC TO PICK UP THE MIC AT THE SAME TIME I FELT THE CAPT PULL THE NOSE UP AND LOOKED OUTSIDE TO SEE THE ACFT PASS DIRECTLY UNDER THE NOSE VERY CLOSE! THE TFC WAS NOT PARALLEL BUT WAS HEADED R FOR US ON A 30 DEG INTERCEPT. I ESTIMATE THAT SMA X WAS AT 1000' AGL WHILE WE WERE BTWN 1100' AND 1200' AGL. I ASKED THE TWR ABOUT THE TFC THAT WE HAD JUST MISSED AND GOT NO RESPONSE. I THEN ASKED THE TWR TO SAY THE HDG AGAIN, BECAUSE I HAD FORGOTTEN WHAT IT WAS IN ALL THE EXCITEMENT. THE CTLR ISSUED THE HDG AGAIN AFTER A LONG PAUSE. I ASKED THE CTLR WHAT THE ACFT WAS DOING OFF THE END OF THE RWY? HIS RESPONSE WAS 'IT MADE A WRONG TURN.' THIS WHOLE EVENT TOOK PLACE IN ABOUT 5 SECS (TIME OF SIGHTING TO TIME OF EVASIVE ACTION). IF I HAD STARTED MY SCAN FROM R TO L INSTEAD OF L TO R YOU MIGHT HAVE BEEN READING ABOUT THIS IN THE PAPER. I CAN'T HELP THINKING THAT IF WE HAD A TCAS SYS IT WOULD NOT HAVE BEEN NEARLY AS CLOSE.

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.