What was found
SURGE ON DESCENT, DURING A 2 HR FLIGHT AT 36K FT THE ENGINE SURGED IN DESCENT, AND ON THE GROUND WHEN TLA ADVANCED OFF-IDLE. THE ENGINE IS BEING REMOVED FOR INVESTIGATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SURGE ON DESCENT, DURING A 2 HR FLIGHT AT 36K FT THE ENGINE SURGED IN DESCENT, AND ON THE GROUND WHEN TLA ADVANCED OFF-IDLE. THE ENGINE IS BEING REMOVED FOR INVESTIGATION.