Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page 1-20 Rev. 4
1.9 Fault Detection and Exclusion (FDE)
The GTN, when installed as defined in this manual, complies with the requirements for GPS primary
means of navigation in oceanic and remote airspace when used in conjunction with the provided FDE
prediction program.
The GTN includes internal Fault Detection and Exclusion (FDE) software which is active for all flight
phases including oceanic and remote operations, en route and terminal, and precision and non-precision
approaches. FDE does not require any pilot interaction. The FDE consists of two parts:
• The fault detection function detects a satellite failure that can affect navigation; and
• The exclusion function is the capability to exclude one or more failed satellites and prevent them
from affecting navigation.
The FDE Prediction program is used to predict FDE availability. This program must be used prior to all
oceanic or remote area flights for all operators using the GTN as a primary means of navigation under
FAR parts 91, 121, 125, and 135. The FDE program is part of the GTN trainer, available for download
from the GTN product information page of Garmin’s website,
www.garmin.com.
1.10 STC Permission
Consistent with Order 8110.4B and AC 21-40, a permission letter to use this STC data is available for
download from the
Dealer Resource Center on Garmin’s website.