As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: MODIFICATION OF LEFT WING AILERON CLOSURE RIB AT WING STA 1230 DUE. FASTENER PULLING THROUGH AILERON CLOSURE RIB LOWER FLANGE. ACCOMPLISHED AILERON CLOSURE RIB MODIFICATION PER EA 354181 / EO5720D009. THIS ACCOMPLISHES BOEING SB B787-81205-SB570027-00.