What was found
AT FLIGHT LEVEL 9000 FT, NR 1 TORQUE ROLLED BACK 25%. THEN WENT BACK TO NORMAL AND REPEATED. RETURN TO FIELD. REMOVED AND REPLACED THE NR 1 ECU IAW SRT MANUAL, OPS CHECKED GOOD. OK FOR SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AT FLIGHT LEVEL 9000 FT, NR 1 TORQUE ROLLED BACK 25%. THEN WENT BACK TO NORMAL AND REPEATED. RETURN TO FIELD. REMOVED AND REPLACED THE NR 1 ECU IAW SRT MANUAL, OPS CHECKED GOOD. OK FOR SERVICE.