What was found
ENGINE SURGES AT FLIGHT LEVELS. SURGES 200 RPM AND 2 INCH MAP. REPLACED DIFFERENTIAL PRESSURE CONTROLLER TO C/W LYC SB WITH PN 48B21935.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ENGINE SURGES AT FLIGHT LEVELS. SURGES 200 RPM AND 2 INCH MAP. REPLACED DIFFERENTIAL PRESSURE CONTROLLER TO C/W LYC SB WITH PN 48B21935.