What was found
PHL FLT 800 EN ROUTE PHL TO CLT. MASKS FAILED TO DROP AT 26A&B, 6CDE, 13CDE, 16CDE, 20CDE, AND 26 CDE AT CENTER AIRCRAFT LEFT (DURING CABIN PRESSURIZATION EVENT - SEE SDR USAA20091215BB161). ACCOMPLISHED DOOR LATCH ADJUSTMENT. DROP TESTED DOORS AND LATCH. OPS CHECK GOOD.