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Garmin 420W - page 1
What’ s New with the 400W / 500W Series New Operational Characteristics of the W AAS GNS 400W/500W Series Units versus the Classic 400/500 Series Units ...
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Garmin 420W - page 2
This document is written for: • Garmin GPS 400W , GNC 420W/420A W , and GNS 430W/430A W Main System Software V ersion 2.00 • Garmin GPS 500W & GNS 530W/530A W Main System Software V ersion 2.00 © 2006 Garmin Ltd. or its subsidiaries. All Rights Reserved. Garmin International, Inc., 1200 East 151 st Street, Olathe, KS 66062, U.S.A. T el. 91 ...
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Garmin 420W - page 3
1 The 400W/500W series of navigators with W AAS now offer many enhancements over the previous non-W AAS models. Advancements include new W AAS-enabled GPS antenna, receiver , and associated software. The 400W/500W series system complies with W AAS TSO C146a and also includes a significant hardware upgrade with a new and much faster micro-pr ocesso ...
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Garmin 420W - page 4
2 Featur e Classic 400/500 New 400W/500W 15 T errain Database Optional Standard. Increased resolution. 16 Dead Reck oning (DR) No Y es 17 Satellite Status P age Y es Enhanced with new colors and 3D differential fix notation. 18 Graphics Speed Good Much better 19 Crossfill Y es 12x faster 20 XM Radio Audio and Weather Limited, NEXRAD , MET ARs , n ...
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Garmin 420W - page 5
3 Detailed Description of Featur e Changes 1. TSO TSO C-129/C-129a allowed the use of GPS for supplemental navigation for non-precision appr oaches. An installation meeting TSO-146a requirements allows the use of your 400W/500W navigators as the primary navigation device for precision appr oaches. See your dealer for detailed information about how ...
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Garmin 420W - page 6
4 GPS Accuracy GPS Condition Accuracy Level Accuracy of the original GPS system, which was subject to accur acy degradation under the government- imposed Selective Availability (SA) program. 100 meters T ypical GPS position accuracy without SA. 15 meters T ypical differential GPS (DGPS) posi- tion accuracy . 3-5 meters T ypical WAAS position accur ...
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Garmin 420W - page 7
5 5. GPS P osition Calculation Rate The W AAS GPS receiver calculates its position five times per second rather than once per second like the Classic C-129/C-129a GPS systems. This, together with the enhanced vertical accuracy and other system en- hancements, allows for vertical approach guidance. 6. GPS Software The GPS software of the Classic 40 ...
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Garmin 420W - page 8
6 11. OBS Oper ation SUSP after canceling OBS when on From side of OBS path – The change in behavior is this: When you put the 400W/500W -series unit into OBS mode and the course selected places the aircraft onto the fr om side and then you cancel OBS, the OBS course is retained but the unit indicates that sequencing is suspended by annunciating ...
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Garmin 420W - page 9
7 7 14. Magnetic V ariation Options Magnetic variation has been simplified to the choices of Magnetic and T rue. See the section on Units/Position of the Setup 1 Page in the Aux Pages chapter of the Pilot’ s Guide for mor e details. 15. T err ain Database The T errain function in Nav mode is now a standar d feature. The extensive database aids i ...
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Garmin 420W - page 10
8 8 20. XM Radio Audio and W eather XM W eather is available thr ough the XM Satellite Radio Service when activated in the optional installa- tion of the GDL 69 or 69A. T extual and graphic weather products such as NEXRAD graphic weather with pr ecipi- tation type, radar coverage, TFRs, T AFs, and MET ARs symbols are displayed in the NA V function. ...
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Garmin 420W - page 11
9 9 21. KAP140/KFC225 Autopilot Operation-Compatible Autopilot outputs for the King KAP140/KFC225 autopilots are activated manually by the pilot after being prompted during the appr oach procedur e. Since these autopilots revert to r oll mode-wings level when transitioning to approach mode, it is important for the pilot to be part of the decision p ...
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Garmin 420W - page 12
© 2006 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 st Street, Olathe, Kansas 66062, U.S.A. Garmin A T , Inc. 2345 T urner Rd., S.E., Salem, Oregon 97302, U.S.A. Garmin (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey , SO51 9DL, U.K. Garmin Corporation No. 68, Jangshu 2 nd Road, Shijr , T aipe ...
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