(2008) Service Advisory 0806 Rev C: G1000 Transponder Flight Identification Operation

Garmin has identified an issue that is infrequently encountered when entering or changing a G1000 Transponder Flight Identification (ID) number using the Primary Flight Display (PFD) entry method. This issue may cause the following to appear on the PFD:

• A red “X” (failure indication) on the Transponder Data Box 
• A “XPDR Config Service” message in the Message Box

AFFECTED PRODUCTS

G1000 installations with GDU software versions prior to 9.02 configured to use the PFD entry method for the Transponder Flight ID number are affected by this notification.

RECOMMENDATIONS

Garmin recommends the following actions for transponder operation:

• Enter or change the Flight ID number only while the aircraft is on the ground. 
• After changing a Flight ID number, do not press other keys, operate knobs on the displays, or attempt to change the Flight ID number on the other transponder (if equipped) for approximately 5 seconds until the Flight ID number update is complete as indicated by the disappearance of UPDATING in the Flight ID number field.

RESOLUTION

System software upgrades containing GDU software version 9.02 and later will resolve this issue. Contact your airframe manufacturer for details.