System Maintenance Manual

G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air Page 4-19

190-00682-01 Revision F

4.8 Flaps-in-Motion Discrete Input Check

To perform this check, all G1000 and GFC 700 equipment must be installed and operational. Start the

G1000 system in Configuration Mode and go to the GIA Page Group and select the GIA I/O

Configuration Page using the FMS knob. Perform the following checks:

Figure 4-2. GIA I/O Page

TRUE/VALID

FALSE/INVALID

Figure 4-3. Discrete Indications

NOTE

Reference Table 3-1 for interpretation of data indicator symbols

1. Verify the DATA indicators of the discrete inputs labeled ‘FLAP EXTEND’ and ‘FLAP

RETRACT’ show a FALSE/INVALID condition.

2. Extend the flaps down. While the flaps are traveling down, check that the DATA indicator of the

discrete input labeled ‘FLAP EXTEND’ changes to a TRUE/VALID condition.

3. When the flap motion is completed, verify the DATA indicators of the discrete inputs labeled

‘FLAP EXTEND’ and ‘FLAP RETRACT’ show a FALSE/INVALID condition.

4. Retract the flaps up. While the flaps are traveling up, check that the DATA indicator of the

discrete input labeled ‘FLAP RETRACT’ changes to a TRUE/VALID condition.

5. When the flap motion is completed, verify the DATA indicators of the discrete inputs labeled

‘FLAP EXTEND’ and ‘FLAP RETRACT’ show a FALSE/INVALID condition.

6. Repeat steps 1 through 5 for GIA2.

The flap discrete input check is complete.