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B737 captain reported altitude and track deviations resulted from their compliance with an RA warning related to an airborne conflict.
| Attributes | |
| ACN | 1381488 |
| Time | |
| Date | 201608 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Flight Phase | Cruise |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Type 2418 |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Altitude Excursion From Assigned Altitude Deviation - Track / Heading All Types |
Narrative:
While cruising southbound at FL310 we noticed an aircraft at our 12 o'clock position climbing to our altitude. When the aircraft was 500 feet below us and still on a direct intercept course the controller gave us an immediate turn to 270. I instructed my first officer (first officer) to disconnect the autopilot and to immediately turn. The controller then repeated his instructions and I was able to respond 'in the turn now' at which time I turned on all lights. At this point we received an RA to 'climb climb now' [and] we initiated a climbing turn. I then noticed an aircraft at our 1 o'clock position 1000 feet above our altitude. We were just clearing the original contact and I instructed my first officer to descend and turn back on course. I advised ATC of the RA and our return back on course and altitude. We did not have an RA or TA for the second aircraft. During the event we departed our original course by 45 degrees and our altitude by 300-400 feet before returning back on course and altitude.
Original NASA ASRS Text
Title: B737 Captain reported altitude and track deviations resulted from their compliance with an RA warning related to an airborne conflict.
Narrative: While cruising southbound at FL310 we noticed an aircraft at our 12 o'clock position climbing to our altitude. When the aircraft was 500 feet below us and still on a direct intercept course the controller gave us an immediate turn to 270. I instructed my First Officer (FO) to disconnect the autopilot and to immediately turn. The controller then repeated his instructions and I was able to respond 'in the turn now' at which time I turned on ALL lights. At this point we received an RA to 'CLIMB CLIMB NOW' [and] we initiated a climbing turn. I then noticed an aircraft at our 1 o'clock position 1000 feet above our altitude. We were just clearing the original contact and I instructed my FO to descend and turn back on course. I advised ATC of the RA and our return back on course and altitude. We did not have an RA or TA for the second aircraft. During the event we departed our original course by 45 degrees and our altitude by 300-400 feet before returning back on course and altitude.
Data retrieved from NASA's ASRS site 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.