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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier X has a bothersome TCASII TA for 30 mins due to another air carrier Y, 1000 ft below and in trail. PIC requests an increase in mach to pt 81 to get away from the distracting aircraft and event. A by-product of the new minimum separation standards over the north atlantic.
| Attributes | |
| ACN | 365715 |
| Time | |
| Date | 199704 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : cyqx |
| State Reference | NF |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : czqx |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : other oceanic enroute : atlantic |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : other oceanic enroute : atlantic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 18000 |
| ASRS Report | 365715 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
New oceanic crossing allows 1000 ft separation. We received TA message for about 30 mins. We were at FL350, other air carrier Y was at FL340. We asked gander center if we could go mach .81 versus assigned mach .80. They approved, we went faster, and TA ceased.
Original NASA ASRS Text
Title: ACR X HAS A BOTHERSOME TCASII TA FOR 30 MINS DUE TO ANOTHER ACR Y, 1000 FT BELOW AND IN TRAIL. PIC REQUESTS AN INCREASE IN MACH TO PT 81 TO GET AWAY FROM THE DISTRACTING ACFT AND EVENT. A BY-PRODUCT OF THE NEW MINIMUM SEPARATION STANDARDS OVER THE NORTH ATLANTIC.
Narrative: NEW OCEANIC XING ALLOWS 1000 FT SEPARATION. WE RECEIVED TA MESSAGE FOR ABOUT 30 MINS. WE WERE AT FL350, OTHER ACR Y WAS AT FL340. WE ASKED GANDER CTR IF WE COULD GO MACH .81 VERSUS ASSIGNED MACH .80. THEY APPROVED, WE WENT FASTER, AND TA CEASED.
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.