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B737-300 aircraft in climb requested deviation for WX and when approved conflict resulted with another aircraft. Though other aircraft was 800 ft above and 2 mi distant, reporter received TCASII.
| Attributes | |
| ACN | 379260 |
| Time | |
| Date | 199709 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : phl |
| State Reference | PA |
| Altitude | msl bound lower : 9700 msl bound upper : 9700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl artcc : zan |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors enroute airway : phl |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 11000 flight time type : 550 |
| ASRS Report | 379260 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
After takeoff and cleared to 10000 ft, just prior to level off, we requested a 10-15 degree turn to left to avoid a small cell. Departure approved the turn. While in the climb and turn, departure said pop-up traffic cleared to descend. Traffic was at 10500 ft and we were passing through 9700 ft. Tried to level and observed the traffic on TCASII and requested a further turn to the left of about another 30 degrees. Traffic passed behind us as departure said he was beginning a descent. It would have been closer if we hadn't had TCASII and departure had not reported him. Would have been nice to have been aware he was at 10500 ft earlier.
Original NASA ASRS Text
Title: B737-300 ACFT IN CLB REQUESTED DEV FOR WX AND WHEN APPROVED CONFLICT RESULTED WITH ANOTHER ACFT. THOUGH OTHER ACFT WAS 800 FT ABOVE AND 2 MI DISTANT, RPTR RECEIVED TCASII.
Narrative: AFTER TKOF AND CLRED TO 10000 FT, JUST PRIOR TO LEVEL OFF, WE REQUESTED A 10-15 DEG TURN TO L TO AVOID A SMALL CELL. DEP APPROVED THE TURN. WHILE IN THE CLB AND TURN, DEP SAID POP-UP TFC CLRED TO DSND. TFC WAS AT 10500 FT AND WE WERE PASSING THROUGH 9700 FT. TRIED TO LEVEL AND OBSERVED THE TFC ON TCASII AND REQUESTED A FURTHER TURN TO THE L OF ABOUT ANOTHER 30 DEGS. TFC PASSED BEHIND US AS DEP SAID HE WAS BEGINNING A DSCNT. IT WOULD HAVE BEEN CLOSER IF WE HADN'T HAD TCASII AND DEP HAD NOT RPTED HIM. WOULD HAVE BEEN NICE TO HAVE BEEN AWARE HE WAS AT 10500 FT EARLIER.
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.