Narrative:

Small transport swbnd level FL120. Widebody transport heavy phl departure climbed to FL170 believed to be widebody transport turned to 050 degree heading.

Google
 

Original NASA ASRS Text

Title: ACR WDB CLEARED TO CLIMB THROUGH OCCUPIED ALT RESULTING IN LESS THAN STANDARD SEPARATION. OPERROR.

Narrative: SMT SWBND LEVEL FL120. WDB HEAVY PHL DEP CLIMBED TO FL170 BELIEVED TO BE WDB TURNED TO 050 DEG HDG.

Data retrieved from NASA's ASRS site as of August 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.