F-16 Hydraulic systems

Operating an F-16 on the ground or in the air - from the engine start sequence, over replacing a wing, to aerial refueling procedures
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by VarkVet » 23 Apr 2011, 08:04

Ever notice how long the hydraulic system stays pressurized on a GE during shutdown/coastdown compared to a Pratt?
Why is that?
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by brianrey » 16 Nov 2012, 11:13

Visit the link given for relevant answer of your questions.

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http://www.aitzone.com/custom-hydraulic ... ic-systems


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by ibrahimzahid » 02 Jul 2017, 07:37

Hello friends,

Is there any one hydraulic specialist who knows the reasons of increasing level of hydraulic system "A" after every flight up to 10% and becomes 100% after few flights without decreasing of pneumatic pressure in any accumulator attached to hydraulic system "A"?


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by alifighterpilot » 08 Sep 2022, 05:47

Hey guys I have a question about the hydraulic system in the F-16 I wonder what is the fluid that is used in the F-16 hydraulic system A and B. And what is the oil used for if the fluid is air.


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by gwes25 » 09 Sep 2022, 12:01

The Hydraulic fluid used in the Viper is a less flammable derivative of Mil-H-5606, I could be mistaken but it may be MIL-H-81352, don't hold me to it. It has been over twenty years since I worked on them.

Also, for the A system increase could be an ISA cross overlook from B system. That is the only place they could co-mingle. Check and see if B system is going down any. It will not be proportional, i.e. 10% increase in A sys will not be a 10% decrease in B due to sizes of reservoirs.

Check the smell also, if it smells like fuel it could be the hydraulic cooler in the fuel tank.


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by f119doctor » 09 Sep 2022, 16:30

I believe the less flammable replacement for Mil-H-5606 is Mil-H-83282
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by alifighterpilot » 10 Sep 2022, 19:37

Do the brakes work on nitrogen in the event of system A and B failure pls I need a deep explanation :roll:

Also, I’m wondering about how does systems B recharges the brake/JFS with hydraulic pressure? Does it mean that system B supplies the accumulators with nitrogen? and if it’s …so what is the main source of the nitrogen? Are all accumulators compressed air bottles? :roll:


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