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B737 flight crew experience an near midair collision at iah when a foreign flag air carrier turns the wrong direction on departure.
| Attributes | |
| ACN | 610161 |
| Time | |
| Date | 200402 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : iah.airport |
| State Reference | TX |
| Altitude | msl bound lower : 1500 msl bound upper : 2200 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tower : iah.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : iah.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude climbout : takeoff |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 190 flight time total : 27000 flight time type : 4200 |
| ASRS Report | 610161 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 200 flight time total : 22500 flight time type : 5600 |
| ASRS Report | 610160 |
| Events | |
| Anomaly | conflict : nmac non adherence : clearance other spatial deviation other spatial deviation |
| Independent Detector | aircraft equipment : gpws aircraft equipment : tcas other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : took evasive action |
| Miss Distance | horizontal : 0 vertical : 400 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : iah.tower |
Narrative:
Prior to flap retraction 1-0 degrees, we received an RA, maintain vertical speed. I monitored our TCASII information. Within 3 seconds, we received a terrain warning followed by another RA with regard vertical speed in conjunction with the tower controller advising to climb as quick as possible. Out of 10000 ft, we re-contacted the tower for an explanation. A foreign carrier flight departing parallel runway turned the wrong way after takeoff causing the conflict. Separation decreased to 400 ft below us. This problem may be averted in the future by discontinuing simultaneous parallel departures. Supplemental information from acn 610160: a foreign air carrier was instructed to turn left after departure and turned right creating the traffic conflict with us. Other air carrier was observed on TCASII 400 ft directly below us and that was confirmed with ATC.
Original NASA ASRS Text
Title: B737 FLT CREW EXPERIENCE AN NMAC AT IAH WHEN A FOREIGN FLAG ACR TURNS THE WRONG DIRECTION ON DEP.
Narrative: PRIOR TO FLAP RETRACTION 1-0 DEGS, WE RECEIVED AN RA, MAINTAIN VERT SPD. I MONITORED OUR TCASII INFO. WITHIN 3 SECONDS, WE RECEIVED A TERRAIN WARNING FOLLOWED BY ANOTHER RA WITH REGARD VERT SPD IN CONJUNCTION WITH THE TWR CTLR ADVISING TO CLB AS QUICK AS POSSIBLE. OUT OF 10000 FT, WE RE-CONTACTED THE TWR FOR AN EXPLANATION. A FOREIGN CARRIER FLT DEPARTING PARALLEL RWY TURNED THE WRONG WAY AFTER TKOF CAUSING THE CONFLICT. SEPARATION DECREASED TO 400 FT BELOW US. THIS PROB MAY BE AVERTED IN THE FUTURE BY DISCONTINUING SIMULTANEOUS PARALLEL DEPS. SUPPLEMENTAL INFO FROM ACN 610160: A FOREIGN ACR WAS INSTRUCTED TO TURN L AFTER DEP AND TURNED R CREATING THE TFC CONFLICT WITH US. OTHER ACR WAS OBSERVED ON TCASII 400 FT DIRECTLY BELOW US AND THAT WAS CONFIRMED WITH ATC.
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.