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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier Y climbed to wrong assigned altitude and had less than standard vertical separation from air carrier X.
| Attributes | |
| ACN | 155107 |
| Time | |
| Date | 199008 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : mt |
| State Reference | FO |
| Altitude | msl bound lower : 39000 msl bound upper : 39000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : czul |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 11400 flight time type : 1400 |
| ASRS Report | 155107 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : clearance non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 3000 vertical : 0 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X returning from paris had been cleared direct to yee from 20 mi so of lakes intersection. A climb to FL390 was also given. We were level FL390 and about 10 mi north of mt. Air carrier Y xed our altitude at a 30 degree angle. We asked montreal if he had an air carrier Y flight out here near us and he responded by saying 'yes at FL350'. We responded by saying 'negative he's at FL390.' controller simply said 'roger'. In my opinion this situation was probably controller error and that feeling comes because of the way the controller hushed the situation quickly.
Original NASA ASRS Text
Title: ACR Y CLIMBED TO WRONG ASSIGNED ALT AND HAD LESS THAN STANDARD VERTICAL SEPARATION FROM ACR X.
Narrative: ACR X RETURNING FROM PARIS HAD BEEN CLRED DIRECT TO YEE FROM 20 MI SO OF LAKES INTXN. A CLB TO FL390 WAS ALSO GIVEN. WE WERE LEVEL FL390 AND ABOUT 10 MI N OF MT. ACR Y XED OUR ALT AT A 30 DEG ANGLE. WE ASKED MONTREAL IF HE HAD AN ACR Y FLT OUT HERE NEAR US AND HE RESPONDED BY SAYING 'YES AT FL350'. WE RESPONDED BY SAYING 'NEGATIVE HE'S AT FL390.' CTLR SIMPLY SAID 'ROGER'. IN MY OPINION THIS SITUATION WAS PROBABLY CTLR ERROR AND THAT FEELING COMES BECAUSE OF THE WAY THE CTLR HUSHED THE SITUATION QUICKLY.
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.