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Widebody transport flight crew resumed early climb from present altitude, after declining and given heading change off course by ATC, when they observed another aircraft target on TCASII at their same altitude. ATC then confirmed their climb to the higher altitude.
| Attributes | |
| ACN | 540291 |
| Time | |
| Date | 200203 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : rctp.artcc |
| State Reference | FO |
| Altitude | msl single value : 35000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : rctp.artcc artcc : zny.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : rctp.artcc |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise : level |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : relief pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 24000 flight time type : 1900 |
| ASRS Report | 540291 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : instrument pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 100 flight time total : 25400 flight time type : 30 |
| ASRS Report | 540290 |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance controller : separated traffic other |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
We were level at FL350. Taipei control had previously cleared us to FL390 by 20 NM prior to parpa. At approximately 70 mi prior to parpa, taipei control asked if we could climb to FL390 now. We advised that we could, but preferred to stay at FL350 until necessary to climb in order to make the crossing restr. Taipei control then gave us a right turn to heading 250 degrees (45 degrees off course). At this time we noticed traffic leveling at FL350 at approximately our 10 O'clock position, on TCASII. After seeing the traffic on TCASII level at FL350, we started our climb to FL390. Then we questioned ourselves if this is what the controller wanted since he turned us off course. We decided to stay at FL350 until the clearance was clarified. Taipei control confirmed our clearance to FL390. We reinitiated our climb to FL390. We did not get any TCASII alert and I do not believe there was a loss of separation. Supplemental information from acn 540290: in retrospect, I believe we did the right things. As we were near a restr area, and the conflicting traffic was very near this area, I think it was a military aircraft that broke out of his protected area.
Original NASA ASRS Text
Title: WDB FLC RESUMED EARLY CLB FROM PRESENT ALT, AFTER DECLINING AND GIVEN HEADING CHANGE OFF COURSE BY ATC, WHEN THEY OBSERVED ANOTHER ACFT TARGET ON TCASII AT THEIR SAME ALT. ATC THEN CONFIRMED THEIR CLB TO THE HIGHER ALT.
Narrative: WE WERE LEVEL AT FL350. TAIPEI CTL HAD PREVIOUSLY CLRED US TO FL390 BY 20 NM PRIOR TO PARPA. AT APPROX 70 MI PRIOR TO PARPA, TAIPEI CTL ASKED IF WE COULD CLB TO FL390 NOW. WE ADVISED THAT WE COULD, BUT PREFERRED TO STAY AT FL350 UNTIL NECESSARY TO CLB IN ORDER TO MAKE THE XING RESTR. TAIPEI CTL THEN GAVE US A R TURN TO HEADING 250 DEGS (45 DEGS OFF COURSE). AT THIS TIME WE NOTICED TFC LEVELING AT FL350 AT APPROX OUR 10 O'CLOCK POS, ON TCASII. AFTER SEEING THE TFC ON TCASII LEVEL AT FL350, WE STARTED OUR CLB TO FL390. THEN WE QUESTIONED OURSELVES IF THIS IS WHAT THE CTLR WANTED SINCE HE TURNED US OFF COURSE. WE DECIDED TO STAY AT FL350 UNTIL THE CLRNC WAS CLARIFIED. TAIPEI CTL CONFIRMED OUR CLRNC TO FL390. WE REINITIATED OUR CLB TO FL390. WE DID NOT GET ANY TCASII ALERT AND I DO NOT BELIEVE THERE WAS A LOSS OF SEPARATION. SUPPLEMENTAL INFO FROM ACN 540290: IN RETROSPECT, I BELIEVE WE DID THE RIGHT THINGS. AS WE WERE NEAR A RESTR AREA, AND THE CONFLICTING TFC WAS VERY NEAR THIS AREA, I THINK IT WAS A MIL ACFT THAT BROKE OUT OF HIS PROTECTED AREA.
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.