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Flight crew requested higher altitude but was given descent to lower and change of route that was not understood by flight crew.
| Attributes | |
| ACN | 182281 |
| Time | |
| Date | 199106 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : yqd |
| State Reference | AB |
| Altitude | msl bound lower : 29000 msl bound upper : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iah |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : czeg |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 23500 |
| ASRS Report | 182281 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : cfi pilot : commercial pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 5500 |
| ASRS Report | 182282 |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While fling at FL310, we received following after requesting higher, descend to cross 160 west 4QD at FL290, maintain FL290, to ymm higher on request. After a few hard to understand radio exchanges, we understood controller was asking for a choice of FL290 or J529 to ymm and elected FL290. We were informed passing fmm that center wanted us to both descend and fly FL290/J529 to ymm.
Original NASA ASRS Text
Title: FLT CREW REQUESTED HIGHER ALT BUT WAS GIVEN DESCENT TO LOWER AND CHANGE OF ROUTE THAT WAS NOT UNDERSTOOD BY FLT CREW.
Narrative: WHILE FLING AT FL310, WE RECEIVED FOLLOWING AFTER REQUESTING HIGHER, DSND TO CROSS 160 W 4QD AT FL290, MAINTAIN FL290, TO YMM HIGHER ON REQUEST. AFTER A FEW HARD TO UNDERSTAND RADIO EXCHANGES, WE UNDERSTOOD CTLR WAS ASKING FOR A CHOICE OF FL290 OR J529 TO YMM AND ELECTED FL290. WE WERE INFORMED PASSING FMM THAT CENTER WANTED US TO BOTH DSND AND FLY FL290/J529 TO YMM.
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.