Narrative:

On vector departure phl to abe. Cleared direct to fjc VOR (or possibly it was a vector which approximated a direct to fjc). TA (TCASII) occurred. Indicated target very close, 12 O'clock, 600 ft below, seemed like same direction quadrant. Target closed to 500 ft vertical. TCASII alerted 'monitor vertical speed' accompanied by 'maintain level flight attitude' on primary flight display (attitude indicator/ADI). Target closed to 400 ft vertical essentially under my aircraft accompanied by TCASII alert 'climb, climb' and pfd indicated climb attitude which directed a 1000 FPM climb to 4400 ft followed by 'monitor vertical speed' alert accompanied by level flight pfd indication. ATC called out 'VFR traffic 12 O'clock position at 3500 ft.' after we announced RA on ATC frequency, all alerts ceased after 'clear of conflict' TCASII aural alert. Immediately returned to 4000 ft MSL.

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Original NASA ASRS Text

Title: AN E170 FLT CREW INITIATE A CLB TO FOLLOW TCASII RA COMMANDS WHILE UNDER CTL OF PHL DEP.

Narrative: ON VECTOR DEP PHL TO ABE. CLRED DIRECT TO FJC VOR (OR POSSIBLY IT WAS A VECTOR WHICH APPROXIMATED A DIRECT TO FJC). TA (TCASII) OCCURRED. INDICATED TARGET VERY CLOSE, 12 O'CLOCK, 600 FT BELOW, SEEMED LIKE SAME DIRECTION QUADRANT. TARGET CLOSED TO 500 FT VERT. TCASII ALERTED 'MONITOR VERT SPD' ACCOMPANIED BY 'MAINTAIN LEVEL FLT ATTITUDE' ON PRIMARY FLT DISPLAY (ATTITUDE INDICATOR/ADI). TARGET CLOSED TO 400 FT VERT ESSENTIALLY UNDER MY ACFT ACCOMPANIED BY TCASII ALERT 'CLB, CLB' AND PFD INDICATED CLB ATTITUDE WHICH DIRECTED A 1000 FPM CLB TO 4400 FT FOLLOWED BY 'MONITOR VERT SPD' ALERT ACCOMPANIED BY LEVEL FLT PFD INDICATION. ATC CALLED OUT 'VFR TFC 12 O'CLOCK POS AT 3500 FT.' AFTER WE ANNOUNCED RA ON ATC FREQ, ALL ALERTS CEASED AFTER 'CLR OF CONFLICT' TCASII AURAL ALERT. IMMEDIATELY RETURNED TO 4000 FT MSL.

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.