Narrative:

At FL290 TCASII commanded a RA climb of 1500 FPM due to an aircraft climbing to FL280. We climbed aircraft to 29600 at which time TCASII system indicated 'clear of traffic'. We notified ATC of TCASII climb from assigned altitude. First officer saw aircraft at this time 3-5 mi in 3 O'clock position. ATC did not inform us of this traffic.

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Original NASA ASRS Text

Title: TCASII RA DICTATED CLB FROM FL290.

Narrative: AT FL290 TCASII COMMANDED A RA CLB OF 1500 FPM DUE TO AN ACFT CLBING TO FL280. WE CLBED ACFT TO 29600 AT WHICH TIME TCASII SYS INDICATED 'CLR OF TFC'. WE NOTIFIED ATC OF TCASII CLB FROM ASSIGNED ALT. FO SAW ACFT AT THIS TIME 3-5 MI IN 3 O'CLOCK POS. ATC DID NOT INFORM US OF THIS TFC.

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.