What was found
(AIRCRAFT NOT GROUNDED) F/AS REPORTED SMELLING ""DIRTY SOCKS"" ODOR BEGINNING AT THEIR ESTIMATE JUST BELOW 10000 FT - THEY REPORTED THE ODOR AS ""STRONG"" TO BEGIN WITH AND THEN IT GRADUALLY DISSIPATED. / PERFORMED T/C 21-000-001, NO SMELLS NOTED. M313 OPENED FOR T/C 21-000-002 TO BE PERFORMED WITHIN 5 DAYS. APU PLACED ON DEFERRAL. (DEFECT# 2139242) PERFORMED INSPECTION OF APU UPON ODOR IN THE CABIN/ FUMES IN CABIN. REF AMM 49-00-00-200-811-A NO DEFECTS NOTED. REF T/C 21-000-002 IAW ALLEGIANT PROCEDURES. THIS CLEARS MEL 49-10-01-A MDDR# 227135. "