What was found
SATCOM LOCKUP OCCURED WHEN APU PWR APPLIED. ACFT GROUNDED. ACCOMPLISHED QRH CHECKLIST. ISSUE CORRECTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SATCOM LOCKUP OCCURED WHEN APU PWR APPLIED. ACFT GROUNDED. ACCOMPLISHED QRH CHECKLIST. ISSUE CORRECTED.