Difference in APs "NAV" and "OMNI" Mode
Printed From: Just Flight Forum
Category: Just Flight Products
Forum Name: PA-28R Arrow/Turbo Arrow III/IV and Warrior II
Forum Description: Discussion area for the PA-28 aircraft (PA-28 Arrow III, Turbo Arrow III/IV and Warrior II)
URL: http://forum.justflight.com/forum_posts.asp?TID=32630
Printed Date: 19 Apr 2024 at 12:24pm
Topic: Difference in APs "NAV" and "OMNI" Mode
Posted By: Dirk1981
Subject: Difference in APs "NAV" and "OMNI" Mode
Date Posted: 10 Jan 2019 at 8:30am
Dear Simmers,
I recently bought the Piper III/IV and have some Questions:
1. Difference between NAV and OMNI in Autopilot?
The Manual gives same explanation for NAV and OMNI but it is recommended to only use OMNI Mode when using for VOR navigation. But it doesn´t say why and what the difference is!
Within the example Flight from the Manual, there is "NAV" used for VOR navigation. That differs from what the Manual says few pages back... Why?
2. Automatic Gear extension
Manual says, the Gear would extend automatically in certain circumstances... eg. manifold Pressure at or below 14 and Speed at or below 87 KIAS. The Gear lever should be in "Middle Position". Is there really a middle position of that lever simulated? It seems to have just "up" and "down"
I don´t get it. Any help is welcome...
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Replies:
Posted By: Dirk1981
Date Posted: 11 Jan 2019 at 9:08am
I´ve found the manual for the AP. Now I´m starting to understand...
%20" rel="nofollow - https://www.51as.org/application/files/9114/5667/8645/AutoControl_IIIB_AutoPilot_Manual.pdf
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Posted By: Martyn
Date Posted: 11 Jan 2019 at 11:46am
Ref no.2, the lever that it refers to is the one located between the two front seats, next to the pitch trim. That lever controls the automatic gear extension, and the gear position lever on the main panel just has the usual two positions.
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Martyn
Just Flight Ltd
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