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A widebody transport turbojet crew descending into zsss forgot to set qnh in the altimeter when descending through the transition level.
| Attributes | |
| ACN | 702879 |
| Time | |
| Date | 200607 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zsss.airport |
| State Reference | FO |
| Altitude | msl single value : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody Low Wing 3 Turbojet Eng |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 4000 |
| ASRS Report | 702879 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 6400 |
| ASRS Report | 702387 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : far non adherence : published procedure non adherence : clearance non adherence : company policies |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued advisory flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Company |
| Primary Problem | Flight Crew Human Performance |
Narrative:
While descending into shanghai; china; we were cleared below the transition level and failed to change from qne to qnh. Several factors contributed. Crew was toward the end of a long asia trip with circadian disruption and last leg of long duty day; chinese controllers were difficult to understand and had been issuing frequent changes to speed/altitude. Transition level was briefed but neither pilot remembered to set it when cleared below. Shanghai approach reissued the clearance; 'maintain 2700 M.' both pilots thought the re-issuance was to confirm altitude because traffic was about to pass close by. There was no conflict with another aircraft. In fact; no other aircraft were displayed on the TCAS at that time. Supplemental information from acn 702387: several factors contributed. Crew was toward the end of a long asia trip with circadian disruption and last leg of long duty day. Chinese controllers were difficult to understand and had been issuing frequent changes to speed/'altitude.
Original NASA ASRS Text
Title: A WDB TURBOJET CREW DSNDING INTO ZSSS FORGOT TO SET QNH IN THE ALTIMETER WHEN DSNDING THROUGH THE TRANSITION LEVEL.
Narrative: WHILE DSNDING INTO SHANGHAI; CHINA; WE WERE CLRED BELOW THE TRANSITION LEVEL AND FAILED TO CHANGE FROM QNE TO QNH. SEVERAL FACTORS CONTRIBUTED. CREW WAS TOWARD THE END OF A LONG ASIA TRIP WITH CIRCADIAN DISRUPTION AND LAST LEG OF LONG DUTY DAY; CHINESE CTLRS WERE DIFFICULT TO UNDERSTAND AND HAD BEEN ISSUING FREQUENT CHANGES TO SPD/ALT. TRANSITION LEVEL WAS BRIEFED BUT NEITHER PLT REMEMBERED TO SET IT WHEN CLRED BELOW. SHANGHAI APCH REISSUED THE CLRNC; 'MAINTAIN 2700 M.' BOTH PLTS THOUGHT THE RE-ISSUANCE WAS TO CONFIRM ALT BECAUSE TFC WAS ABOUT TO PASS CLOSE BY. THERE WAS NO CONFLICT WITH ANOTHER ACFT. IN FACT; NO OTHER ACFT WERE DISPLAYED ON THE TCAS AT THAT TIME. SUPPLEMENTAL INFO FROM ACN 702387: SEVERAL FACTORS CONTRIBUTED. CREW WAS TOWARD THE END OF A LONG ASIA TRIP WITH CIRCADIAN DISRUPTION AND LAST LEG OF LONG DUTY DAY. CHINESE CTLRS WERE DIFFICULT TO UNDERSTAND AND HAD BEEN ISSUING FREQUENT CHANGES TO SPD/'ALT.
Data retrieved from NASA's ASRS site as of January 2009 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.