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#1
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My experience has been good with a 530/430 (non WAAS) to the ARC unit, although I also have a Flight Director. In NAV mode, it will follow the magenta line quite nicely and even the turns are not bad as the Garmin unit does use anticipation which if I recall correctly is programable anyway in the Garmin. Than with LOC mode armed, when LOC is sensed, it switches to that and with GS armed, when intercepted, the glide slope is also followed.
Works pretty well, but that said I almost always hand fly the approaches for the practice and monitor the entire approach when coupled. There was a requirement for an adapter box or two so the Garmins would talk to everything as I recall, but that was the top and tail of it. Peter has seen my set-up so may also be able to comment further. Regards - Dave |
#2
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Loc mode is a switched output from the GNS unit which is connected to the A/Pilot, and as Dave says in LOC mode on the A/Pilot the glide slope is armed. However in Nav mode the glide slope is disabled.
The 400A is a very good system and like everything, maintained correctly will give you no problems, and they are easy to repair when they go wrong. The main problems are----- 1 Pilots overriding the servos and either breaking the shear pin or damaging the clutch. 2. The follow up resistors in the servos go intermittant. Apart from those, the system is fine, remember the 400A is installed into most Cessna twins until the 400B came out, but the 400B does not differ much from the 400A. Hello Mr Underwood, all ok? Regards Pete |
#3
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400a autopilot
is there anyone out there with technical knowledge of the 400a autopilot-
have an intermittent problem I'd like some opinions |
#4
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Quote:
400 autopilots will develop intermittent problems due to their age. This can come from leaking capacitors to corrosion on connectors. |
#5
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Is there a published procedure for replacing capacitors and cleaning connectors?
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_________ John K 1977 337G CNC3 |