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Aircraft equipment operating procedure regarding TCASII on departure traffic situation. Multiple runway operation parallel runways.
| Attributes | |
| ACN | 266626 |
| Time | |
| Date | 199403 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : phl |
| State Reference | PA |
| Altitude | agl bound lower : 500 agl bound upper : 500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : phl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff climbout : initial |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 11000 flight time type : 150 |
| ASRS Report | 266626 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | none taken : detected after the fact none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 1500 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
We received a TA while taking off on runway 27L at phl. The RA was inhibited due to low altitude. Tower did not advise us of a jetstream that apparently had departed runway 27R, which is displaced about 4500 ft east of runway 27L. Strong north winds apparently blew the jetstream closer to runway 27L and if we had delayed or forgotten the 255 degree heading off of runway 27L we could have easily flown/climbed into the higher aircraft. We initially did not see the TA on the TCASII because we had it in the WX plus TCASII mode. This put the conflict at the very bottom of the screen which is partially blocked by the vertical speed cards. The first officer had it in this mode due to habits of operating a different setup which is also on some of our aircraft. I did not consider it that critical, however, in the future I will have it only in the TCASII mode if WX is not needed. This places your aircraft in the center of the screen and displays aircraft that are abeam and aft of your position. The tower should have advised us of an aircraft that had taken off behind us -- they usually do.
Original NASA ASRS Text
Title: ACFT EQUIP OPERATING PROC REGARDING TCASII ON DEP TFC SIT. MULTIPLE RWY OP PARALLEL RWYS.
Narrative: WE RECEIVED A TA WHILE TAKING OFF ON RWY 27L AT PHL. THE RA WAS INHIBITED DUE TO LOW ALT. TWR DID NOT ADVISE US OF A JETSTREAM THAT APPARENTLY HAD DEPARTED RWY 27R, WHICH IS DISPLACED ABOUT 4500 FT E OF RWY 27L. STRONG N WINDS APPARENTLY BLEW THE JETSTREAM CLOSER TO RWY 27L AND IF WE HAD DELAYED OR FORGOTTEN THE 255 DEG HDG OFF OF RWY 27L WE COULD HAVE EASILY FLOWN/CLBED INTO THE HIGHER ACFT. WE INITIALLY DID NOT SEE THE TA ON THE TCASII BECAUSE WE HAD IT IN THE WX PLUS TCASII MODE. THIS PUT THE CONFLICT AT THE VERY BOTTOM OF THE SCREEN WHICH IS PARTIALLY BLOCKED BY THE VERT SPD CARDS. THE FO HAD IT IN THIS MODE DUE TO HABITS OF OPERATING A DIFFERENT SETUP WHICH IS ALSO ON SOME OF OUR ACFT. I DID NOT CONSIDER IT THAT CRITICAL, HOWEVER, IN THE FUTURE I WILL HAVE IT ONLY IN THE TCASII MODE IF WX IS NOT NEEDED. THIS PLACES YOUR ACFT IN THE CTR OF THE SCREEN AND DISPLAYS ACFT THAT ARE ABEAM AND AFT OF YOUR POS. THE TWR SHOULD HAVE ADVISED US OF AN ACFT THAT HAD TAKEN OFF BEHIND US -- THEY USUALLY DO.
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.