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Flight crew of an air carrier climbed in response to a TCASII RA during high level cruise resulting in a loss of standard separation. ARTCC radar controller had previously given an off course turn for traffic separation.
| Attributes | |
| ACN | 433442 |
| Time | |
| Date | 199904 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : lkv.vortac |
| State Reference | OR |
| Altitude | msl single value : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zse.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : j67.airway |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zse.artcc |
| Route In Use | enroute airway : j67.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 146 flight time total : 12070 flight time type : 4087 |
| ASRS Report | 733442 |
| Person 2 | |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : returned to assigned airspace flight crew : took precautionary avoidance action other |
| Miss Distance | horizontal : 21000 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
95 mi northwest of lkv VOR at FL310, ATC said turn left 30 degrees for traffic. Then got a traffic alert followed by a climb RA and monitor vertical speed of 2000 FPM. Saw other traffic on TCASII, approximately 3 1/2 mi at 2 O'clock and 400 ft. Reported RA deviation to ATC. At FL320 got 'clear of conflict' and reported returning to FL310 and direct btg. ATC frequency 135.35.
Original NASA ASRS Text
Title: FLC OF AN ACR CLBED IN RESPONSE TO A TCASII RA DURING HIGH LEVEL CRUISE RESULTING IN A LOSS OF STANDARD SEPARATION. ARTCC RADAR CTLR HAD PREVIOUSLY GIVEN AN OFF COURSE TURN FOR TFC SEPARATION.
Narrative: 95 MI NW OF LKV VOR AT FL310, ATC SAID TURN L 30 DEGS FOR TFC. THEN GOT A TFC ALERT FOLLOWED BY A CLB RA AND MONITOR VERT SPD OF 2000 FPM. SAW OTHER TFC ON TCASII, APPROX 3 1/2 MI AT 2 O'CLOCK AND 400 FT. RPTED RA DEV TO ATC. AT FL320 GOT 'CLR OF CONFLICT' AND RPTED RETURNING TO FL310 AND DIRECT BTG. ATC FREQ 135.35.
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.