As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF DURING PUSHBACK THE LEFT CSD OIL PRESSURE LIGHT TURNED ON. CSD WAS DISCONNECTED AND DEFERRED IN ACCORDANCE WITH MEL 24-1-1. DURING OVERNIGHT CHECK, THE CSD AND THE OIL HEAT EXCHANGER WERE REPLACED IN ACCORDANCE WITH MM 24-10-01, TESTS CORRECT.