What was found
MCO - FLT 503 - CLIMBING THROUGH 700 FEET, LOSS OF L A/C DISTRIBUTION SYSTEM. PER FCOM, ATTEMPTED 1 RESET, UNSUCCESSFUL, L ENGINE GEN WILL NOT STAY ON LINE. CONCURRENTLY WITH ABOVE, A/C X-TIE LOCKOUT. PER FCOM, POWERED L, A/C DIST SYSTEM WITH APU GEN, AND CONTINUED. RESET GEN AND A/C X-TIE LOCKOUT IAW MM 24-20. PERFORMED ENGINE RUN UP AT GATE. ALL CONDITIONS CHECK NORMAL AT THIS TIME. PLEASE ADVISE NEXT FLIGHT. (M)