What was found
THE AIRCRAFT WAS GROUNDED. R CSD WARN LIGHT (LOW OIL PRESS) FIRST THEN R GEN INOP. DISCONNECTED R CSD PER PROCEDURE. APU WOULD NOT START AT 30,000 OR 28,000 OR 26,000 FEET. NO FAULT LIGHT. THE FLIGHT DECLARED AN EMERGENCY AND DIVERTED TO SDF WITHOUT FURTHER INCIDENT. ECU FAULTED START RLY R2-63 RELAY. REMOVED AND REPLACED R2-36 RELAY. OPS CHECKS OK ON GROUND PER AMM 49-00-00 AND AMM 24-00-00. (SEE ALSO SDR AALA20170628001).