As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - BTB, CAPTAIN'S HEADING SELECTOR INOP, IRS SWITCH TO ALT RESETS PROPER HEADING. REMOVED AND REPLACED NR 1 ARU GROUND CHECK OK AMM 34-21-01 TEST 30 PASSED. ACFT OK FOR SERVICE AND ACFT REMAINS IN TRIPLE LAND STATUS.