What was found
CORROSION ON LEFT LATERAL AVIONICS COMPARTMENT INTERNAL STRUCTURE CHECK VALVE AIR INLET RING FLANGE AT FRAME 21 BETWEEN STRINGERS 31 AND 32L. REPLACED RING FLANGE IAW SRM 51-72-11 AND DRAWING D53912684.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CORROSION ON LEFT LATERAL AVIONICS COMPARTMENT INTERNAL STRUCTURE CHECK VALVE AIR INLET RING FLANGE AT FRAME 21 BETWEEN STRINGERS 31 AND 32L. REPLACED RING FLANGE IAW SRM 51-72-11 AND DRAWING D53912684.