Narrative:

Climbing through 18000 ft TCASII issued 'traffic' alert at 1-2 O'clock at about 1000 ft above to 1500 moving opposite direction at 4-5 mi. Both pilots diverted attention to TCASII and climbed through assigned altitude of FL190 to 19400. Arrested climb at 19400 and descended back to FL190 without further problem.

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Original NASA ASRS Text

Title: FLC OF MLG IN CLB AT 18000 HAD TCASII TA. CAPT FLYING OVERSHOT HIS 19000 ASSIGNED ALT.

Narrative: CLBING THROUGH 18000 FT TCASII ISSUED 'TFC' ALERT AT 1-2 O'CLOCK AT ABOUT 1000 FT ABOVE TO 1500 MOVING OPPOSITE DIRECTION AT 4-5 MI. BOTH PLTS DIVERTED ATTN TO TCASII AND CLBED THROUGH ASSIGNED ALT OF FL190 TO 19400. ARRESTED CLB AT 19400 AND DSNDED BACK TO FL190 WITHOUT FURTHER PROBLEM.

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.