As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRAME AT BS 787R BETWEEN STRINGER 8R AND 9R IS CRACKED AT AIR CONDITIONING OUTLET EXTRUSION SUPPORT BRACKET INBD ATTACH FASTENER. CRACK NOTED DURING ACCOMPLISMENT OF STEP 4 OF EA 5310-04716, REV C, MFEC REPAIRED IAW EA 5310-04716, REV C, OP 1.