Testing of aircraft jet engines after maintenance and prior to refitting is vital for reliable and safe operation. Each engine test requires a log report providing details of the engine, all relevant test parameters and the engineers who supervised the test.
For each test the engine is run through a test sequence. Dependent
upon the resulting data it may be necessary to rerun steps in the
sequence in any order.
In-depth checks on engines from the production line or returned by customers are undertaken in four engine test cells, each of which has a cell computer to control a throttle actuator and dynamometer. A supervisory machine is also used to act as a central file server and an arbitrator for an Emissions Cart.
