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An air carrier widebody transport crew descended in response to a TCASII command. This was in foreign airspace.
| Attributes | |
| ACN | 227758 |
| Time | |
| Date | 199211 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : mid airport : gtw |
| State Reference | FO |
| Altitude | msl bound lower : 11500 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Dawn |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star enroute airway : egtt |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 8500 |
| ASRS Report | 227758 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : required legal separation non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Captain was flying in descent out of FL130 for FL120. Flight guidance and autoplt set and armed for FL120. Heard TCASII RA command to descend, glanced at TCASII, confirmed red square at 12:30. The captain then followed the vsi green band commanding 2000 ft down. When the RA cleared, he returned to FL120. Altitude deviation approximately 500 ft below assigned altitude.
Original NASA ASRS Text
Title: AN ACR WDB CREW DSNDED IN RESPONSE TO A TCASII COMMAND. THIS WAS IN FOREIGN AIRSPACE.
Narrative: CAPT WAS FLYING IN DSCNT OUT OF FL130 FOR FL120. FLT GUIDANCE AND AUTOPLT SET AND ARMED FOR FL120. HEARD TCASII RA COMMAND TO DSND, GLANCED AT TCASII, CONFIRMED RED SQUARE AT 12:30. THE CAPT THEN FOLLOWED THE VSI GREEN BAND COMMANDING 2000 FT DOWN. WHEN THE RA CLRED, HE RETURNED TO FL120. ALTDEV APPROX 500 FT BELOW ASSIGNED ALT.
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.