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Medium large transport-air carrier came in close proximity to descending small transport proceeding inbound to den on commonly used departure route.
| Attributes | |
| ACN | 82280 |
| Time | |
| Date | 198802 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : den |
| State Reference | CO |
| Altitude | msl bound lower : 13500 msl bound upper : 13500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : den |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport |
| Flight Phase | climbout : initial climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid enroute : on vectors enroute airway : den |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport |
| Flight Phase | descent : approach descent other landing other |
| Route In Use | approach : visual arrival other enroute : direct |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 13000 flight time type : 10000 |
| ASRS Report | 82280 |
| Person 2 | |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action none taken : anomaly accepted none taken : insufficient time |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
First officer flying, climb out of den to north, turned left to 220 degrees to join J-60, 246 degree right. As we passed through 13500', we were just about to intercept J-60 when ATC called out traffic, '1 O'clock, 8 mi, descending through 14500' VFR.' after 2-3 seconds, the second officer saw him dead ahead. The first officer had already started a normal turn onto the arwy, so when he saw the small transport a few mi ahead he pulled back harder on the yoke to make sure he had sufficient clearance. We passed directly over the small transport whose course was directly opposite to ours. Probably sep, 500-1000'. Called ATC and told them we had to pull up to get a comfortable clearance. An aircraft behind us volunteered that he had to make a course correction for an small transport as well. The controller further stated that they had been trying for a long time to get these small transport's from making VFR dscnts on this route.
Original NASA ASRS Text
Title: MLG-ACR CAME IN CLOSE PROX TO DESCENDING SMT PROCEEDING INBOUND TO DEN ON COMMONLY USED DEP ROUTE.
Narrative: F/O FLYING, CLBOUT OF DEN TO N, TURNED LEFT TO 220 DEGS TO JOIN J-60, 246 DEG R. AS WE PASSED THROUGH 13500', WE WERE JUST ABOUT TO INTERCEPT J-60 WHEN ATC CALLED OUT TFC, '1 O'CLOCK, 8 MI, DSNDING THROUGH 14500' VFR.' AFTER 2-3 SECS, THE S/O SAW HIM DEAD AHEAD. THE F/O HAD ALREADY STARTED A NORMAL TURN ONTO THE ARWY, SO WHEN HE SAW THE SMT A FEW MI AHEAD HE PULLED BACK HARDER ON THE YOKE TO MAKE SURE HE HAD SUFFICIENT CLRNC. WE PASSED DIRECTLY OVER THE SMT WHOSE COURSE WAS DIRECTLY OPPOSITE TO OURS. PROBABLY SEP, 500-1000'. CALLED ATC AND TOLD THEM WE HAD TO PULL UP TO GET A COMFORTABLE CLRNC. AN ACFT BEHIND US VOLUNTEERED THAT HE HAD TO MAKE A COURSE CORRECTION FOR AN SMT AS WELL. THE CTLR FURTHER STATED THAT THEY HAD BEEN TRYING FOR A LONG TIME TO GET THESE SMT'S FROM MAKING VFR DSCNTS ON THIS ROUTE.
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.