What was found
(AIRCRAFT NOT GROUNDED) DIRTY SOCK SMELL FILLED FLIGHT DECK WHEN OUTFLOW VALVE OPENED AROUND 3,000' / C/W ALLEGIANT AIR A320 TC 21-000-002. FOUND EVIDENCE OF WETTNESS IN LOAD COMPRESSOR WITH BORESCOPE. APU LOAD COMPRESSOR LEAK. REMOVED APU IAW AMM TASK 49-11-11-000-004-A. C/W STEPS #2 & #3. CLEANING OF THE APU COMPARTMENT AND APU AIR INTAKE WITHOUT THE APU INSTALLED IAW 49-00-00-100-805-A AND 49-16-00-100-005-A. COMPLETED INSTALLATION OF THE APU IAW A320 AMM 49-11-11-400-A STEPS 4 (D) THRU COMPLETION. NO DEFECTS NOTED AT THIS TIME. "