PPRuNe Forums - LNAV/VNAV AND APPROACH MODE

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bluehawaii

27th April 2018 01:06

LNAV/VNAV AND APPROACH MODE

When flying an RNAV (GPS/GNSS) Approach with an LNAV/VNAV minimum do you push the approach mode?

galaxy flyer

27th April 2018 01:29

If you go by twin angel on APF, I just answered your question there. Yes, arm APPR and VNAV on Collins ProLine systems.

Gf

wiggy

27th April 2018 03:50

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.

Jwscud

27th April 2018 08:41

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.

bluehawaii

28th April 2018 05:15

Thank for the answers.

wiggy

28th April 2018 06:47

Did you get one that was relevant?

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