What was found
YXD - during scheduled maintenance a crack was found in the L/H wing upper surface stringer @ WS 686.5, second stringer from aft.Repaired crack per Service bulletin 727-57A-159, figure 18.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
YXD - during scheduled maintenance a crack was found in the L/H wing upper surface stringer @ WS 686.5, second stringer from aft.Repaired crack per Service bulletin 727-57A-159, figure 18.