Boeing 737

What is WAI on Boeing 737? (Wing Anti-Ice)

What is FMV on Boeing 737? (Fuel Metering Valve)

What is CMS on Boeing 737? (Cabin Management System)

What is AC on Boeing 737? (Alternating Current)

What is ASCTS on Boeing 737? (Air Supply Control And Test System)

What is PTU on Boeing 737? (Power Transfer Unit)

What is G/S on Boeing 737? (Glide Slope)

What is RFLNG on Boeing 737? (Refueling)

What is EXT on Boeing 737? (Extend)