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CE650 flight crew reports near midair collision with B52 at FL190. Crew is alerted by TCAS and takes evasive action.
| Attributes | |
| ACN | 879699 |
| Time | |
| Date | 201003 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citation III VI VII (C650) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Stratofortress (B-52) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 45 Flight Crew Total 5300 Flight Crew Type 497 |
| Person 2 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 60 Flight Crew Total 7900 Flight Crew Type 1100 |
| Events | |
| Anomaly | Conflict NMAC |
| Miss Distance | Horizontal 0 Vertical 300 |
Narrative:
I was crewing as sic of an aircraft cruising at FL190. There was a traffic alert on TCAS. The alert was an amber target at +3;300; twelve o'clock and descending rapidly. Both pilots' eyes [were] on the situation. We noticed the aircraft moved in a zigzag. [We] received an RA to descend on TCAS. Noticed the aircraft was at +300 feet. Reported to ATC immediately that we had an RA and were descending. At the same time of reporting to ATC; I looked out for traffic and spotted a B-52 at our two o'clock position and less than one mile horizontal. Looks like if we hadn't taken evasive action there could have been a collision. We descended until the TCAS advised us that we were clear of conflict. We descended to 18;300. Once clear of traffic we climbed back to assigned altitude of FL190. I listened to ATC tell the other aircraft he should have been at block altitude of 22;000 to 20;000 feet; thank goodness for TCAS.
Original NASA ASRS Text
Title: CE650 flight crew reports NMAC with B52 at FL190. Crew is alerted by TCAS and takes evasive action.
Narrative: I was crewing as SIC of an aircraft cruising at FL190. There was a traffic alert on TCAS. The alert was an amber target at +3;300; twelve o'clock and descending rapidly. Both pilots' eyes [were] on the situation. We noticed the aircraft moved in a zigzag. [We] received an RA to descend on TCAS. Noticed the aircraft was at +300 feet. Reported to ATC immediately that we had an RA and were descending. At the same time of reporting to ATC; I looked out for traffic and spotted a B-52 at our two o'clock position and less than one mile horizontal. Looks like if we hadn't taken evasive action there could have been a collision. We descended until the TCAS advised us that we were clear of conflict. We descended to 18;300. Once clear of traffic we climbed back to assigned altitude of FL190. I listened to ATC tell the other aircraft he should have been at block altitude of 22;000 to 20;000 feet; thank goodness for TCAS.
Data retrieved from NASA's ASRS site as of April 2012 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.