Type: Commercial cargo door conversion.

Programme: Contract awarded by Marshall Aerospace in late 1994 to desgn and supply the actuation system for operation of the cargo doors being installed by Marshall Aerospace on Lockheed L-1011 Tristar aircraft.

Customer: Marshall Aerospace

Design Features: Complete system comprises a hydraulic actuator and an autonomous hydraulic supply unit. The hydraulic actuator, which is a simplex unit with two sub-actuators, provides the primary force to open doors. The sub-actuators operate the lock mechansim.

Aircraft Manufacturer: Lockheed Martin

Upgrade Contractor: Claverham