What was found
ATB NR 2 PACK ON MEL NR 1 PACK BYPASS VALVE FAULTED. NR 1 PACK BYPASS VALVE FAULTED ON DEPARTURE. REMOVED AND REPLACED THE NR 1 PACK BYPASS VALVE. AWAITING TEARDOWN REPORT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ATB NR 2 PACK ON MEL NR 1 PACK BYPASS VALVE FAULTED. NR 1 PACK BYPASS VALVE FAULTED ON DEPARTURE. REMOVED AND REPLACED THE NR 1 PACK BYPASS VALVE. AWAITING TEARDOWN REPORT.