Flying the Green Data???
Hey guys, I haven't heard of this before but I was taking an FAA course and it mentioned that airline pilots will back up their GPS/VOR navagation means by "Flying Green Data" which says that its basically a form a dead reckoning in the event of failure of the nav systems... By knowing your heading, altitude and distance to the next fix.
Flying the Green Data? I have never heard of this... You guys do this often? Would somebody elaborate? Is this just an airline version of pilotage and dead reckoning? Why is it called "Green Data"? |
Originally Posted by skycowboy
(Post 224760)
Hey guys, I haven't heard of this before but I was taking an FAA course and it mentioned that airline pilots will back up their GPS/VOR navagation means by "Flying Green Data" which says that its basically a form a dead reckoning in the event of failure of the nav systems... By knowing your heading, altitude and distance to the next fix.
Flying the Green Data? I have never heard of this... You guys do this often? Would somebody elaborate? Is this just an airline version of pilotage and dead reckoning? Why is it called "Green Data"? |
Its flying in the Green World and the Magenta world. Green is conventional nav and magenta is FMS.
|
Originally Posted by ERJ135
(Post 224771)
Its flying in the Green World and the Magenta world. Green is conventional nav and magenta is FMS.
|
It could also be magenta if you're using the FMS bearing pointer.
|
Originally Posted by rickair7777
(Post 224773)
FMS is white needles in the CRJ. Raw nav data is green.
Yeah, come to think of it they where white in 1900 too. |
I would think this to be impossible if the FMS system is utilizing the "Auto Tune" feature.
|
K, so what the heck does "flying green data" mean? Is it just raw nav stuff?
|
Originally Posted by skycowboy
(Post 224797)
K, so what the heck does "flying green data" mean? Is it just raw nav stuff?
The GS is presented on one side of the PFD. Normally you fly white needles (or magaenta or whatever color depending on the airplane) which means the FMS auto-tunes whatever navaids it wants and utilizes the data it recieves to track a pre-programmed route. It also uses GPS so if either GPS or VOR/DME was unavailable hopefully you would have a backup. The FMS is normally coupled to the AP. |
Originally Posted by skycowboy
(Post 224797)
K, so what the heck does "flying green data" mean? Is it just raw nav stuff?
The Honeywell FMS's that Gulfstream uses look for GPS first, then DME/DME, VOR/DME, and finally inertial nav (IRS). If GPS signal is lost, the FMS will look for multiple DME signals to triangulate. If you lose GPS overwater and out of range of NAVAIDS, then you are stuck w/IRS's which are good for 6.2 hours before they drift too far out of tolerances. |
All times are GMT -8. The time now is 09:49 PM. |
User Alert System provided by
Advanced User Tagging v3.3.0 (Lite) -
vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Website Copyright ©2000 - 2017 MH Sub I, LLC dba Internet Brands