PPRuNe Forums - View Single Post - Air India B788 descends to 200 ft over water at HKG
Old 9th Dec 2018, 16:39
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Long Haul
 
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Originally Posted by ManaAdaSystem
That is your view, mine is: That’s why they have an off button for the glideslope.
Actually, the B787 also has a switch to turn off the glideslope. The FCOM recommends using this with unreliable indications. It’s called IAN (integrated approach navigation). You arm approach just like on an ILS, only you descend in GP mode instead of GS mode, and you can’t do an autoland.
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