Instruction Manual

Page 5-4 G1000 / GFC 700 System Maintenance Manual - 200/B200 Series King Air
Revision 8 190-00915-01
5.2 System Annunciations
If data fields become invalid due to an LRU failure, the PFD/MFD typically annunciates the failure with
a large red X, as shown in Figure 5-4.
Figure 5-4, System Annunciations
5.2.1 Failed Path Messages
The following message indicates there is a data path connected to the GDU (PFD1, PFD1, or MFD) or
the GIA 63W (1 or 2) that has failed.
FAILED PATH – A data path has failed.
The FAILED PATH message is triggered by a timeout of any one digital channel. The channels that are
checked are listed on these pages in config mode:
1) GDU RS-232 / ARINC 429 CONFIG (PFD1/2, and MFD)
2) GIA RS-232 / ARINC 429 CONFIG (GIA1 and GIA2)
3) GIA CAN / RS-485 CONFIGURATION (GIA1 and GIA2)
IMPORTANT!
Once the FAILED PATH message has been triggered, it will remain on the list of
messages until the next power cycle. This latching was implemented so that for
intermittent failures, the message would remain at the end of the flight (to alert
maintenance crew). Also, this keeps the crew from having to acknowledge message
repeatedly in the case of intermittent failures.
The box next to each channel indicates the current status of the channel per the below:
• Red X = data path is known to be failed
• Amber question mark (?) = data path status is unknown
• Green checkmark (9)= data path is known to be good