LNAV/VNAV AND APPROACH MODE
Joined: Feb 2001
Posts: 6,726
Likes: 103
From: The Winchester
The answer to the question as asked by the OP is what TA said...It is equipment dependant.
FWIW if you are trying to fly an LNAV/VNAV approach to a runway where there is a coincident ILS then (certainly on some types) selecting Approach Mode (APR] will probably lead to the AFDS on your equipment coupling to the ILS and ignoring the LNAV/VNAV profile completely....Certainly on those types if you want to fly an LNAV/VNAV approach you definitely do not select APR.
FWIW if you are trying to fly an LNAV/VNAV approach to a runway where there is a coincident ILS then (certainly on some types) selecting Approach Mode (APR] will probably lead to the AFDS on your equipment coupling to the ILS and ignoring the LNAV/VNAV profile completely....Certainly on those types if you want to fly an LNAV/VNAV approach you definitely do not select APR.
Last edited by wiggy; 27th April 2018 at 06:38.
Joined: Sep 2008
Aviation Qualifications: ATPL
Posts: 935
Likes: 52
From: Scotland
It depends. 737 and 787 have IAN, which allows one to arm approach for an NPA a in the same manner as an ILS. my previous employer didn’t pay for IAN on the 737 and I haven’t flown the plastic fantastic so I can’t comment as to how easy it is, but the functionality exists in the newer Boeing software packages.
