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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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The reporter 'felt' that the controller may have wanted him to cross a previously assigned fix at 11000 ft.
| Attributes | |
| ACN | 329480 |
| Time | |
| Date | 199603 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : gep |
| State Reference | MN |
| Altitude | msl bound lower : 7000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 300 flight time total : 32000 flight time type : 4500 |
| ASRS Report | 329480 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | other anomaly other other anomaly other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
ATC cleared us to descend to 24000 ft at our discretion. As we started our descent I had first officer ask ATC if there was a speed restr. ATC said no. Staying on top of clouds (24000 ft) till a need to descend would require a very good rate of descent (4500-5000 FPM) and, no speed restr (wind northwest above 100 KTS) ground speed 490 KTS. Then ATC cleared us to cross ollee at 11000 ft, still no speed restr. About 8 mi before ollee intersection ATC cleared us to 7000 ft. In doing so canceled our 11000 ft ollee crossing restr. I slowed down our rate of descent and was high at ollee above 11000 ft. I believe ATC meant us to cross ollee at 11000 ft then descend to 7000 ft but hadn't cleared us that way. I think I should have asked ATC about the clearance change (no crossing restr at ollee) and the need for us to slow down if it was a problem for them a second time.
Original NASA ASRS Text
Title: THE RPTR 'FELT' THAT THE CTLR MAY HAVE WANTED HIM TO CROSS A PREVIOUSLY ASSIGNED FIX AT 11000 FT.
Narrative: ATC CLRED US TO DSND TO 24000 FT AT OUR DISCRETION. AS WE STARTED OUR DSCNT I HAD FO ASK ATC IF THERE WAS A SPD RESTR. ATC SAID NO. STAYING ON TOP OF CLOUDS (24000 FT) TILL A NEED TO DSND WOULD REQUIRE A VERY GOOD RATE OF DSCNT (4500-5000 FPM) AND, NO SPD RESTR (WIND NW ABOVE 100 KTS) GND SPD 490 KTS. THEN ATC CLRED US TO CROSS OLLEE AT 11000 FT, STILL NO SPD RESTR. ABOUT 8 MI BEFORE OLLEE INTXN ATC CLRED US TO 7000 FT. IN DOING SO CANCELED OUR 11000 FT OLLEE XING RESTR. I SLOWED DOWN OUR RATE OF DSCNT AND WAS HIGH AT OLLEE ABOVE 11000 FT. I BELIEVE ATC MEANT US TO CROSS OLLEE AT 11000 FT THEN DSND TO 7000 FT BUT HADN'T CLRED US THAT WAY. I THINK I SHOULD HAVE ASKED ATC ABOUT THE CLRNC CHANGE (NO XING RESTR AT OLLEE) AND THE NEED FOR US TO SLOW DOWN IF IT WAS A PROB FOR THEM A SECOND TIME.
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.