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-   -   ADF - Deactivation (https://www.pprune.org/tech-log/508723-adf-deactivation.html)

Deep and fast 26th February 2013 07:38

I work in Russia and NDBs are still prevalent.

Centaurus 26th February 2013 09:45


Also, does anybody now fly an NDB or even a VOR without an FMC overlay using LNAV or the equivalent?
In real life they probably don't. But when testing a candidate for an instrument rating in the simulator and if he requires to renew his endorsement on the ADF or VOR, then he must demonstrate competency on each of those navigation aids. Using an over-lay and VNAV/LNAV is not a valid test of his flying skill at conducting those non-precision approaches.
Frequently it is noticed that the candidate has significant difficulty in tracking in crosswinds when flying these approaches as sole navaids especially raw data. Which is precisely the purpose of checking them on the basic navaid rather than allowing the autopilot/FD to fly the overlay which is by no means proof of the pilot's flying ability.

Denti 26th February 2013 11:37

Not over here. Was never checked to fly any VOR/NDB approach according to raw data since i started to fly on a jet. Always just LNAV/VNAV and then lateron IAN, both with and without flight director of course.

avionimc 26th February 2013 12:34

Except for training purposes, in more than 30 years I flew only two real life NDB approaches (at BIRK & LSGC), both in the early 1990s while the ILS or VOR were out for maintenance.

STBYRUD 26th February 2013 13:06

Flew an NDB to EDDK not too long ago because the ILS was out and the operator at the time was not certified for GPS approaches... There are applications for it.

Escape Path 26th February 2013 15:40


CX - 744ERFs, -8Fs and latest 777s are not fitted with ADFs, plus no longer do NDB approaches or circling for that matter.
Did I get that one wrong or are you actually meaning they won't fly any kind of circling approaches as in the visual basic manoeuvre?

FE Hoppy 27th February 2013 10:59

Plenty of airlines have ditched circling approaches and NDB are history with the introduction of PBN. Saves money on ground and aircraft equipment. Simplifies procedures, and offers better nav accuracy. The disappointing thing is the length of time it's taking to get everyone on board.

nitpicker330 28th February 2013 09:56

In CX visual approaches are ok but circling cannot!! :ok:

Everywhere we go there are either straight in conventional approaches or RNAV approaches anyway......


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