What was found
APU FAULT LIGHT ILLUM. GROUNDED - YES. AIRCRAFT CHECKED AND RELEASED REF MEL 49-1B APU INOP DUE TO FAULT MSG STARTER GENERATOR OIL FILTER SHOWS CLOGGED. PERFORMED FIM 49-90 TASK 809 (STARTER GENERATOR OIL FILTER SHOWS CLOGGED). MAGNETIC PLUG INSPECTION GOOD, NO DEBRIS NOTED, PER AMM TASK 49-91-81-200-801. REMOVED AND REPLACED FILTER ELEMENTS, NO CONTAMINATION NOTED PER AMM TASK 49-91-12-400-801. REMOVED AND REPLACED FILTER BYPASS SWITCH PER AMM TASK 49-91-13-000-803. STARTED APU LEAK CHECKED FILTERS AND SWITCH NO LEAKS NOTED, PERFORMED APU BITE PROCEDURE, NO FAULTS FOUND PER FIM 49-60 TASK 801. MEL 49-1B REMOVED/CLEARED.