What was found
PDIS 950 27-51 9670 03FEB23 MEM OPEN U TE FLAP DISAGREE DURING APPROACH. RAN QRH. ALTERNATE FLAP EXTENSION WORKED AS ADVERTISED. DIVERTED TO MEM. LANDED FLAPS 20 PER QRH GUIDANCE. EMERGENCY DECLARED. ***EMERGENCY DECLARED*** REMOVED AND REPLACED LEFT HAND INBOARD TRAILING EDGE FLAP TRANSMISSIONSREF BOEING 757 AMM 27-51-06-4 OPS CK GOOD REF TSI 27-50/9673 FOR OTHER WORK PERFORMED. COMPLETED STEP 4 OF TSI TO COMPLETE THIS TASK. CHECK TSI 27-50/9673 FOR WORK PERFORMED.