Topic summary
Reverse thrust

Extracted from the Wikipedia article Thrust reversal.
Overview
Reverse thrust is used on most civil jet aircraft, airliners and business jets. One exception is the BAe 146 which has a fuselage tip-mounted air brake instead. It is also not always required for all engines on a particular aircraft type if it has more than 2 engines. The 4-engined Airbus A380 only needs reversers on 2 engines and the 3-engined Dassault Falcon aircraft only needs a reverser on the center engine.