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Air carrier received and complied with RA from TCASII during cruise. Military aircraft reported in the area, but well clear.
| Attributes | |
| ACN | 441006 |
| Time | |
| Date | 199906 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : ocs.vortac |
| State Reference | WY |
| Altitude | msl single value : 37000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zlc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : j154.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : instrument pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 19000 flight time type : 1000 |
| ASRS Report | 441006 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 9000 flight time type : 3500 |
| ASRS Report | 440412 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne critical inflight encounter other non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 5000 vertical : 250 |
| Supplementary | |
| Problem Areas | ATC Facility Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Shortly after leveling at FL370, TCASII issued a traffic alert. Observed intruder aircraft in 9-11 O'clock position, less than 2 mi and 100-200 ft below. TCASII issued RA with instructions to climb. Climbed from FL370 to FL380 (approximately). Conflict was resolved. Returned to FL370, observed intruder at 9 O'clock position and 1600 ft below us. ATC was advised. Said only traffic was an F16 at FL410 directly above. We inquired as to position of his wingman. Flight continued on at FL370. Remainder of flight was normal and uneventful.
Original NASA ASRS Text
Title: ACR RECEIVED AND COMPLIED WITH RA FROM TCASII DURING CRUISE. MIL ACFT RPTED IN THE AREA, BUT WELL CLR.
Narrative: SHORTLY AFTER LEVELING AT FL370, TCASII ISSUED A TFC ALERT. OBSERVED INTRUDER ACFT IN 9-11 O'CLOCK POS, LESS THAN 2 MI AND 100-200 FT BELOW. TCASII ISSUED RA WITH INSTRUCTIONS TO CLB. CLBED FROM FL370 TO FL380 (APPROX). CONFLICT WAS RESOLVED. RETURNED TO FL370, OBSERVED INTRUDER AT 9 O'CLOCK POS AND 1600 FT BELOW US. ATC WAS ADVISED. SAID ONLY TFC WAS AN F16 AT FL410 DIRECTLY ABOVE. WE INQUIRED AS TO POS OF HIS WINGMAN. FLT CONTINUED ON AT FL370. REMAINDER OF FLT WAS NORMAL AND UNEVENTFUL.
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.