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Clearance confusion in foreign operation results in altitude overshoot and a crossing restr being missed.
| Attributes | |
| ACN | 480110 |
| Time | |
| Date | 200007 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : urnos |
| State Reference | FO |
| Altitude | msl bound lower : 18900 msl bound upper : 20000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| Experience | flight time last 90 days : 120 flight time total : 2000 flight time type : 300 |
| ASRS Report | 480110 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllerb |
| Resolutory Action | controller : issued new clearance controller : issued advisory flight crew : returned to original clearance |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On a flight from mia to sal (mslp) we were cleared to descend to FL180. Approximately 50 NM north of fix (urnos) on UB764, we were told to cross urnos at or below FL200. Passing FL195, the controller called us to tell us to cross urnos at or above FL200. The captain who was the PF immediately leveled off and climbed from FL189 to FL200. Controller said he had previously cleared us to cross urnos at or above FL200 but all 3 cockpit crew members remember at or below FL200 being given. I believed this error was caused due to a language barrier. Controller had a very heavy accent and we had problems understanding each other. When I received the clearance I repeated at or below. The controller replied 'roger.'
Original NASA ASRS Text
Title: CLRNC CONFUSION IN FOREIGN OP RESULTS IN ALT OVERSHOOT AND A XING RESTR BEING MISSED.
Narrative: ON A FLT FROM MIA TO SAL (MSLP) WE WERE CLRED TO DSND TO FL180. APPROX 50 NM N OF FIX (URNOS) ON UB764, WE WERE TOLD TO CROSS URNOS AT OR BELOW FL200. PASSING FL195, THE CTLR CALLED US TO TELL US TO CROSS URNOS AT OR ABOVE FL200. THE CAPT WHO WAS THE PF IMMEDIATELY LEVELED OFF AND CLBED FROM FL189 TO FL200. CTLR SAID HE HAD PREVIOUSLY CLRED US TO CROSS URNOS AT OR ABOVE FL200 BUT ALL 3 COCKPIT CREW MEMBERS REMEMBER AT OR BELOW FL200 BEING GIVEN. I BELIEVED THIS ERROR WAS CAUSED DUE TO A LANGUAGE BARRIER. CTLR HAD A VERY HVY ACCENT AND WE HAD PROBS UNDERSTANDING EACH OTHER. WHEN I RECEIVED THE CLRNC I REPEATED AT OR BELOW. THE CTLR REPLIED 'ROGER.'
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.