Thrust reverser deactivation with leaking actuator

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Thrust reverser deactivation with leaking actuator

Postby Shumway » 25 Aug 2018, 08:38

If one of the thrust reverser actuators has a leak, can the aircraft be despatched by following the TR deactivation MEL?
As per the system schematics, hydraulic pressure is not supplied to the reverser during normal operation, except during deploy and 10.8 seconds after stow command.
Yes, hydraulic might still drip but its whatever's in the line, not from the system...
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Re: Thrust reverser deactivation with leaking actuator

Postby sjap » 27 Aug 2018, 22:14

Yes youre right. The lines are without pressure. I would do the same
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Re: Thrust reverser deactivation with leaking actuator

Postby Stenovic » 26 Jan 2019, 22:24

Well leak has to be within limits as actuators are constantly pressurized even after deactivation. In company has been a problem where they asked Boeing and they confirm it.
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Re: Thrust reverser deactivation with leaking actuator

Postby Shumway » 04 Jul 2019, 17:01

If I'm not mistaken, the actuators are not pressurised aftee a time delay once it is stowed... So if there's a leak it'll only leak whatevers in the line up to the TR module in the MWW.
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Re: Thrust reverser deactivation with leaking actuator

Postby IFixPlanes » 14 Jul 2019, 05:24

Shumway wrote:If I'm not mistaken, the actuators are not pressurised ...

When was the last time you opened a hydraulic line? ;)
PS:... oh and there is a limit in the AMM
78-31-00-206-001-C00 (CL)
78-31-00-700-F00 (NG)
78-31-00-700-801-G00 (MAX)
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