What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS AT FL 380 LH ENGINE HAD 4 ABNORMAL INDICATIONS HAPPENING SIMULTANEOUSLY DUCT PRESS WENT ABOVE 60 PSI EGT, N2, N3 ALL WENT INTO YELLOW BAND AND WOULD HAVE EXCEEDED RED WITHOUT THROTTLE REDUCTION. FL 360 HAD REAT. BELOW FL 300 ALL INDICATIONS STAYED NORMAL. MAINTENANCE PERFORMED EEC BITE IAW FIM 73-21-00, NO FAULTS FOUND. PERFORMED TPU BITE OF LH ENG IAW FIM 75-32-00-301, FOUND FAULT CODE B3, TPU REPLACEMENT NECESSARY. REMOVED AND REPLACED LH ENG TPU SENSOR IAW AMM 75-32-15-404-012-R00. PERFORMED BVCU BITE OF LH ENG IAW FIM 75-32-00-301, FOUND FAULT CODE 74-7E (REPLACE BVCU). REMOVED AND REPLACED LH ENG BVCU IAW AMM 75-32-01, BITE TEST NORMAL. REMOVED AND REPLACED ENG 1 UPPER AND LOWER GCU IAW AMM 73-21-10. GENERATOR AND STATOR REMOVED AND REPLACED AND OPS CHECKED. ACCOMPLISHED DEDICATED GENERATOR TEST IAW AMM 73-21-08, STEP H. ALL CHECKS OK. NO LEAKS NOTED. (SEE SDR # AALA201912059004, AALA201912099051, AALA201912099052)