Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P38AA-9120 found under Fan Controller by The Trane Company A Division Of. The National Stock Number assigned to this part is 4140015362484, and the Federal Supply Class is 4140 Fans Air Circulators And Blower Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P38AA-9120.