What was found
DURING CLIMB, LT ENG SURGED. A/C DIVERTED. LANDED WITHOUT INCIDENT. SEVERAL COMPONETS CHANGED INCLUDING NR 1 EEC, BVCU, AND SEVERAL OPERATIONAL TESTS PREFORMED. DISCOVERED TUBE MISSING FROM PF RAKE ON THE NR 1 ENGINE. A/C FERRIED FOR REPAIR. R & R PF RAKE ON NR 1 ENG. OPS TEST GOOD. COULD NOT CONFIRM FAILURE OF ESC. UNIT TESTED ONLY & PASSED ALL TESTS IAW CMM. NO FAULTS FOUND. BLEED VALVE CONTROLLER FAILED INCOMING TESTS. FOUND H1 FAULTY ON SIGNAL PROCESSOR BOARD. ALSO FOUND FATIGUED JOINTS ON TR4 & TR9 ON PUS2 BOARD. H1 PROCESSOR BOARD REPLACED & UNITED REPAIRED. UNIT PASSED OPS CHKS. ALL WORK ACCOMPLISHED IAW CMM.