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Flight crew of ATR set local altimeter setting prior to transition level at an international destination and a critical encounter with B777 in the same holding pattern results.
| Attributes | |
| ACN | 637068 |
| Time | |
| Date | 200411 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : tapa.airport |
| State Reference | FO |
| Altitude | msl single value : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | ATR Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : tapa.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B777 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 : captain oversight : pic |
| ASRS Report | 637068 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 637381 |
| Events | |
| Anomaly | altitude deviation : overshoot altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment : tcas |
| Resolutory Action | controller : issued alert flight crew : overcame equipment problem flight crew : returned to assigned altitude flight crew : took evasive action other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Arrived in vc bird airspace at 7000 ft. Instructions were to enter 12 DME arc to omrel and hold. At 14 DME, first officer made right turn to join 12 DME arc. Air carrier Y B777 complained to approach controller that he was receiving RA because we had changed altimeter to 29.71. We immediately changed back to 29.92. The controller informed us that the altimeter was 29.71. We reset the altimeter to 29.71, and I confirmed to the controller the altimeter 29.71 was in the box. The air carrier Y B777 kept after the controller about flight level. The air carrier Y B777 was correct and we knew we should have been at 29.92 above 4000 ft. The argument continued between the air carrier Y and the controller. I knew what was correct, but I felt intimidated by the controller. I complied with the controller and all of his instructions.
Original NASA ASRS Text
Title: FLT CREW OF ATR SET LCL ALTIMETER SETTING PRIOR TO TRANSITION LEVEL AT AN INTL DEST AND A CRITICAL ENCOUNTER WITH B777 IN THE SAME HOLDING PATTERN RESULTS.
Narrative: ARRIVED IN VC BIRD AIRSPACE AT 7000 FT. INSTRUCTIONS WERE TO ENTER 12 DME ARC TO OMREL AND HOLD. AT 14 DME, FO MADE R TURN TO JOIN 12 DME ARC. ACR Y B777 COMPLAINED TO APCH CTLR THAT HE WAS RECEIVING RA BECAUSE WE HAD CHANGED ALTIMETER TO 29.71. WE IMMEDIATELY CHANGED BACK TO 29.92. THE CTLR INFORMED US THAT THE ALTIMETER WAS 29.71. WE RESET THE ALTIMETER TO 29.71, AND I CONFIRMED TO THE CTLR THE ALTIMETER 29.71 WAS IN THE BOX. THE ACR Y B777 KEPT AFTER THE CTLR ABOUT FLT LEVEL. THE ACR Y B777 WAS CORRECT AND WE KNEW WE SHOULD HAVE BEEN AT 29.92 ABOVE 4000 FT. THE ARGUMENT CONTINUED BTWN THE ACR Y AND THE CTLR. I KNEW WHAT WAS CORRECT, BUT I FELT INTIMIDATED BY THE CTLR. I COMPLIED WITH THE CTLR AND ALL OF HIS INSTRUCTIONS.
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.