What was found
ATTEMPTED CSS ON APU AT FL 340. FIRST ATTEMPT: FAULT LIGHT ILLUMINATED. SHUTDOWN APU WAITED 5 MINUTES BEFORE ATTEMPTING A SECOND START. SECOND ATTEMPT, FL340: APU EGT REACHED 1,000+ C AND FAULT LIGHT ILLUMINATED. WE SHUT THE APU DOWN, CONSULTED WITH MAINTENANCE AND BASED ON INFO ABOVE DECIDED NOT TO ATTEMPT A THIRD START. ACFT GROUNDED. R & R LUBE MODULE, REF AMM 49-91-11-000-803 FOR REMOVAL AND AMM 49-91-11-400-803 FOR INSTALL. R & R FUEL CONTROL UNIT, REF AMM 49-31-11-000-801 FOR REMOVAL AND AMM 49-31-11-400-801 FOR INSTALL. LEAK AND OPS CK GOOD ON APU. APU BITE NO LONGER SHOWS FAULT MESSAGES.