As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE NR 1 AUDIBLE COMPRESSOR SURGE. [SUP 05-18-07] DETERMINED THAT VARIABLE STATOR VANE ACTUATOR WAS MALFUNCTIONING AND WAS REPLACED. FURTHER TEARDOWN FOUND EXTENSIVE FUEL LACQUERING THROUGHOUT ACTUATOR, WHICH INTERFERED WITH PROPER OPERATION.