Boeinger

What is HMU on Boeing 737? (Hydromechanical Unit)

What is DAR on Boeing 737? (Digital Aids Recorder)

What is PYL on Boeing 737? (Pylon)

What is RVSG on Boeing 737? (Reversing)

What is COLL on Boeing 737? (Collision)

What is MTRS on Boeing 737? (Meters)

What is ENTMT on Boeing 737? (Entertainment)

What is HLD on Boeing 737? (Hold (See: Hdg Hold))

What is MTCHG on Boeing 737? (Matching)

What is EFCU on Boeing 737? (Elevator Feel And Centering Unit)