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The first officer did not respond to the first TCASII RA to climb but did to the second at the so prompting. The TCASII occurred due to rate of descent and not because separation was lost.
| Attributes | |
| ACN | 336071 |
| Time | |
| Date | 199605 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : rjtg |
| State Reference | FO |
| Altitude | msl bound lower : 27000 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : rjtg |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 4000 flight time type : 1500 |
| ASRS Report | 336071 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
Cleared to descend to FL270. At FL275 received TCASII 'traffic' followed shortly afterward by 'climb, climb.' all 3 crew members looking outside for traffic which was never seen or reported by tokyo center. At first indications of 'climb' command, no action was taken by PF. So directed PF (copilot) to start climbing. Autoplt was off and a climb was initiated until 'clear of conflict' command from TCASII (approximately FL280). Copilot later stated he had not responded to TCASII climb due to being 'outside' looking for the traffic (at 3:30 O'clock position on TCASII display) and because he could not see the red marks on the vsi indicating climb command due to direct sunlight on vsi. An airline aircraft was level at FL260, but the geometry of our descent to FL270 caused RA.
Original NASA ASRS Text
Title: THE FO DID NOT RESPOND TO THE FIRST TCASII RA TO CLB BUT DID TO THE SECOND AT THE SO PROMPTING. THE TCASII OCCURRED DUE TO RATE OF DSCNT AND NOT BECAUSE SEPARATION WAS LOST.
Narrative: CLRED TO DSND TO FL270. AT FL275 RECEIVED TCASII 'TFC' FOLLOWED SHORTLY AFTERWARD BY 'CLB, CLB.' ALL 3 CREW MEMBERS LOOKING OUTSIDE FOR TFC WHICH WAS NEVER SEEN OR RPTED BY TOKYO CTR. AT FIRST INDICATIONS OF 'CLB' COMMAND, NO ACTION WAS TAKEN BY PF. SO DIRECTED PF (COPLT) TO START CLBING. AUTOPLT WAS OFF AND A CLB WAS INITIATED UNTIL 'CLR OF CONFLICT' COMMAND FROM TCASII (APPROX FL280). COPLT LATER STATED HE HAD NOT RESPONDED TO TCASII CLB DUE TO BEING 'OUTSIDE' LOOKING FOR THE TFC (AT 3:30 O'CLOCK POS ON TCASII DISPLAY) AND BECAUSE HE COULD NOT SEE THE RED MARKS ON THE VSI INDICATING CLB COMMAND DUE TO DIRECT SUNLIGHT ON VSI. AN AIRLINE ACFT WAS LEVEL AT FL260, BUT THE GEOMETRY OF OUR DSCNT TO FL270 CAUSED RA.
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.