What was found
FLT#1621, LHR-BOS. 'NAV ATC/XPDR 2 FAULT ON CLIMBOUT; PERFORMED OPS CHECK OF THE ATC 2 IAW 34-52-00 OPS CHECKS GOOD.'
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT#1621, LHR-BOS. 'NAV ATC/XPDR 2 FAULT ON CLIMBOUT; PERFORMED OPS CHECK OF THE ATC 2 IAW 34-52-00 OPS CHECKS GOOD.'