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B777 Stabalizer EICAS

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B777 Stabalizer EICAS

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Old 9th Jan 2017, 01:22
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B777 Stabalizer EICAS

Was wondering for the B777 Stabilizer recall actions:
"1. STAB cutout switches (both) . . . . . . . . . CUTOUT
2 . Do not exceed the current airspeed."

What is the reason for not exceeding the current airspeed?

And what if you encounter this EICAS during a Go-around with a low speed and for the approach your Vref is more than the speed you encountered the STABILIZER EICAS.
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Old 11th Jan 2017, 06:45
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The assumption would be that the stab would be in motion, retrimming as the aircraft accelerates. When the failure occurs, the stab would be trimmed for that speed at the time of failure. Presumably any further speed increase may have adverse effects on the elevator authority.
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Old 11th Jan 2017, 09:36
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Lack of nose DOWN elevator authority if speed is increased...
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Old 15th Jan 2017, 22:13
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Thanks for the answers guys..
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