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Large transport flight crew descending into hold at FL240 informed by ATC that clearance was to FL260.
| Attributes | |
| ACN | 142444 |
| Time | |
| Date | 199004 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : aqn |
| State Reference | TX |
| Altitude | msl bound lower : 24000 msl bound upper : 25000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 5000 |
| ASRS Report | 142444 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 180 flight time total : 6500 flight time type : 3000 |
| ASRS Report | 142234 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | other |
Narrative:
Cleared to descend from FL350 to FL310 and to expect holding due to severe WX in area and low visibility at dfw. Quickly followed by clearance to descend to FL240, proceed to cotton intersection and hold as published. While descending through 25200', captain called entering holding. ZFW came back and said he had cleared us to FL260. I immediately leveled off at FL250 as center came back and said for us to turn to 120 degree (we were just starting a right turn in holding pattern and were heading about 170 degree) and to continue to descend to FL240. All three of us in the cockpit thought we heard the clearance to descend to FL240. The captain had placed FL240 in the altitude alert and also read back the clearance to descend to FL240 to center. We proceeded to land at dfw west/O further incident. Once on the ground, the captain called center and they said there was no conflict, no problem.
Original NASA ASRS Text
Title: LGT FLT CREW DESCENDING INTO HOLD AT FL240 INFORMED BY ATC THAT CLRNC WAS TO FL260.
Narrative: CLRED TO DSND FROM FL350 TO FL310 AND TO EXPECT HOLDING DUE TO SEVERE WX IN AREA AND LOW VISIBILITY AT DFW. QUICKLY FOLLOWED BY CLRNC TO DSND TO FL240, PROCEED TO COTTON INTXN AND HOLD AS PUBLISHED. WHILE DSNDING THROUGH 25200', CAPT CALLED ENTERING HOLDING. ZFW CAME BACK AND SAID HE HAD CLRED US TO FL260. I IMMEDIATELY LEVELED OFF AT FL250 AS CENTER CAME BACK AND SAID FOR US TO TURN TO 120 DEG (WE WERE JUST STARTING A R TURN IN HOLDING PATTERN AND WERE HDG ABOUT 170 DEG) AND TO CONTINUE TO DSND TO FL240. ALL THREE OF US IN THE COCKPIT THOUGHT WE HEARD THE CLRNC TO DSND TO FL240. THE CAPT HAD PLACED FL240 IN THE ALT ALERT AND ALSO READ BACK THE CLRNC TO DSND TO FL240 TO CENTER. WE PROCEEDED TO LAND AT DFW W/O FURTHER INCIDENT. ONCE ON THE GND, THE CAPT CALLED CENTER AND THEY SAID THERE WAS NO CONFLICT, NO PROB.
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.