The CF6-80C engines on the 767 have two different versions of door opening systems that open the thrust reverser halves
for access to the engine during maintenance.
- Power Door Opening System (PDOS) with thrust reverser power opening pack connected to aircraft power operated with a switch on the thrust reverser.
- Manual Door Opening System (MDOS) with thrust reverser handpump quick release connector.
Your aircraft has PDOS thrust reversers installed and you want to install MDOS thrust reversers instead of PDOS.
More flexibility in thrust revereser spare part availability.
This change deactivates the PDOS system.
More flexibility in thrust revereser spare part availability.