What was found
TWO POPS HEARD ON NR 1 ENGINE AT 41K FT .79 MACH TAT -32C N1 ROLLED BACK APPROX 5%. . AUTOTHROTTLES DID NOT DISCONNECT AND ENGINE STABILIZED. ALL ENGINE PARAMETERS NORMAL FOR REMAINDER OF FLIGHT. COMPLIED WITH FIM TASK 71-05-805. FOUND FAULT CODE 75-30801 T25 SIGNALS DISAGREE. REMOVED AND REPLACED NR 1 ENGINE PT25 SENSOR IAW TASK 73-21-02. COMPLIED WITH FIM 71-05 TASK 805 AND AMM TASK 71-00-00-210-801-F00 BORESCOPE. NO DAMAGE FOUND. COMPLIED WITH RII AMM 72-00-00-980-801-FOO.