Narrative:

At FL290 TCAS commanded a RA climb of 1500 FPM due to an aircraft climbing to FL280. We climbed aircraft to FL29600 at which time TCAS system indicated clear of traffic. Notified ATC of TCAS initiated climb. First officer saw conflicting aircraft 3-5 mi at 3 O'clock position.

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Original NASA ASRS Text

Title: TCASII RA CREATES AN ALT DEV ALT EXCURSION BY PIC.

Narrative: AT FL290 TCAS COMMANDED A RA CLB OF 1500 FPM DUE TO AN ACFT CLBING TO FL280. WE CLBED ACFT TO FL29600 AT WHICH TIME TCAS SYS INDICATED CLR OF TFC. NOTIFIED ATC OF TCAS INITIATED CLB. FO SAW CONFLICTING ACFT 3-5 MI AT 3 O'CLOCK POS.

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.