As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL280, OAT -40 DEGREES C, TMS OFF, ANY REDUCTION IN POWER OF NR 3 ENGINE FUEL FLOW WOULD DROP TO 300 NR A FEW SECONDS. OTHER ENGINE INSTRUMENTS WOULD DROP ACCORDINGLY. REMOVED AND REPLACED NR 3 FUEL CONTROL ASSEMBLY. OPS AND LEAK CHECKS GOOD AT THIS TIME. (M)