What was found
DURING C-3 CHECK, CAPTAINS O2 MASK FAILED PRESS-TO-TEST. REPLACED CAPTAINS O2 BOX ASSY PER AMM 35-12-41-000-001, 35-12-41-406-001 AND 35-12-41-710-001. OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING C-3 CHECK, CAPTAINS O2 MASK FAILED PRESS-TO-TEST. REPLACED CAPTAINS O2 BOX ASSY PER AMM 35-12-41-000-001, 35-12-41-406-001 AND 35-12-41-710-001. OPS CHECKED GOOD.