As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON C-CHECK, LEFT PRIMARY H/E EXHAUST LOUVERS HAVE PLAY. REMOVED LT PRIMARY H/E EXHAUST LOUVERS PER B-727 IAW MM 21-55-00. REPLACED LT PRIMARY HEAT EXCHANGER EXHAUST LOUVERS IN ACCORDANCE WITHB-727 MM 21-55-00. REINSTALLED LT PRIMARY HEAT EXCHANGER EXHAUST LOUVER PANEL IN ACCORDANCE WITH B-727 MM 21-55-00. OPS CHECKED LT PRIMARY HEAT EXCHANGER EXHAUST LOUVERS PER B-727 MM 21-55-00, OPS CHECK OK.