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Page 3-12
G1000 System Maintenance Manual
Rev. A
190-00903-00
3.19 GSR56/GDL59
Figure 3-21. GDL 59 System Level Block Diagram
The GDL 59 serves as a short range, high speed data link between the aircraft and ground based
networks. The GDL 59 is located in the aircraft and will provide communications service
through an 802.11 RF link when on the ground. The GDL 59 can also provide a flight data
logger function. When paired with the GSR 56 Iridium data link, the GDL 59 can provide in-
flight voice calling and short burst data communications to ground based networks. The GDL 59
has various connection options to aircraft audio panels, a Plain Old Telephone Service (POTS)
handset, aircraft avionics through High Speed Data Bus (HSDB), and zero, one or two GSR 56
Iridium satellite modules, as shown in Figure 3-21. The GDL 59 provides an effective means for
aircraft avionics, pilots, and potential passengers to transfer voice and data between the aircraft
and ground networks.
