Dictionary
Words, grammatical forms and meanings linked to the ontology.
manual reversion en · NOUN
Pronunciation
- /ˈman.j(ʊ).əl ɹɪˈvəː.ʃən/ (UK)
- /ˈmæn.j(əw).əl ɹəˈvɚ.ʒən/ (US)
- /ˈmæn.j(əw).əl ɹɪˈvɚ.ʒən/ (US)
Meanings
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(uncountable) The actuation via purely mechanical means (using cables and/or pushrods) of one or more control surfaces that are usually controlled by hydraulics.
In the event of a failure of both hydraulic systems A and B, the ailerons and elevators can be operated manually without hydraulic power (referred to as manual reversion). The rudder has no manual reversion capability but can be operated with the standby hydraulic system.
1999, National Transportation Safety Board, “1.6.2 Boeing 737 Hydraulic System Information”, in Uncontrolled Descent And Collision With Terrain, USAir Flight 427, Boeing 737-300, N513AU, Near Aliquippa, Pennsylvania, September 8, 1994, archived from the original on 16 Jan 2021, page 16: