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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Flight crew failed to meet speed restr on STAR intersection as depicted on the chart and ATC cleared them to maintain 'normal speed.' since they had been assigned a higher speed, they interpreted normal as the same speed they were flying. ATC intervened to question their speed, but said it was ok.
| Attributes | |
| ACN | 332070 |
| Time | |
| Date | 199603 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : sea |
| State Reference | WA |
| Altitude | msl bound lower : 12000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other |
| Route In Use | arrival other enroute airway : zse |
| 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 : 5700 flight time type : 150 |
| ASRS Report | 332070 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : published procedure non adherence : clearance other anomaly |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were en route from calgary, yyc, to seattle, bfi. The route we were cleared on was the GLASR3 arrival. On this arrival are some altitude and airspeed restrs. One of the restrs is to cross jakson at 250 KTS expect to cross at 12000 ft. This restr was entered into the FMS. About 180 NM from seattle we were asked by center what our present speed was. We were doing 280 KIAS and reported this to ATC. ATC then gave us a clearance to descend to 14000 ft and maintain 280 KTS in the descent, start down now.
Original NASA ASRS Text
Title: FLC FAILED TO MEET SPD RESTR ON STAR INTXN AS DEPICTED ON THE CHART AND ATC CLRED THEM TO MAINTAIN 'NORMAL SPD.' SINCE THEY HAD BEEN ASSIGNED A HIGHER SPD, THEY INTERPRETED NORMAL AS THE SAME SPD THEY WERE FLYING. ATC INTERVENED TO QUESTION THEIR SPD, BUT SAID IT WAS OK.
Narrative: WE WERE ENRTE FROM CALGARY, YYC, TO SEATTLE, BFI. THE RTE WE WERE CLRED ON WAS THE GLASR3 ARR. ON THIS ARR ARE SOME ALT AND AIRSPD RESTRS. ONE OF THE RESTRS IS TO CROSS JAKSON AT 250 KTS EXPECT TO CROSS AT 12000 FT. THIS RESTR WAS ENTERED INTO THE FMS. ABOUT 180 NM FROM SEATTLE WE WERE ASKED BY CTR WHAT OUR PRESENT SPD WAS. WE WERE DOING 280 KIAS AND RPTED THIS TO ATC. ATC THEN GAVE US A CLRNC TO DSND TO 14000 FT AND MAINTAIN 280 KTS IN THE DSCNT, START DOWN NOW.
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.