Instruction Manual
Page 4-6 G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Revision 4 190-00716-01
Item Description/Procedure
Manual
Section No.
Interval
GTS Traffic
Processor
Removal & Replacement
6.37
On Condition
GRA 5500 6.38
GDL 59 Wi-Fi
Datalink
6.34
GSR 56 Satellite
Receiver
6.35
GSD 41 Data
Concentrator
6.36
G1000 Cooling Fan
Fail Annunciation
Check*
For aircraft equipped per MDL 005-00629-
00 Rev 6 or previous revision and not
modified per GarminService Bulletin
1375: Verify the operation of the fan
power and fan speed monitoring circuits
for GIA1 fan and GIA2 fan
NOTE: See Section 6.29, Figure 6-6, for
identification of cooling fan installation applicable
for this maintenance interval.
8.1.4 220 hours max
G1000 Cooling Fan
Fail Annunciation
Check
For aircraft equipped per MDL 005-00629-
00 Rev 7 or latest FAA approved revision, or
modified per Garmin Service Bulletin 1375:
Verify the operation of the fan power and fan
speed monitoring circuits for GIA1 fan and
GIA2 fan
NOTE: See Section 6.29, Figure 6-7, for
identification of cooling fan installation applicable
for this maintenance interval.
8.1.4 820 hours max
G1000 Cooling Fan
Fail Annunciation
Check
Verify the operation of the fan power and fan
speed monitoring circuits for PFD1 fan, MFD
fan and PFD2 fan and fan fail messages
8.1.4 820 hours max
Nose Avionics
Compartment Fans
Operational Check*
For aircraft equipped per MDL 005-00629-
00 Rev 6 or previous revision and not
modified per Garmin Service Bulletin
1375: Functional test of the GIA1 and
GIA2 ported fans. Verify airflow from all
fan ports
NOTE: See Section 6.29, Figure 6-6, for
identification of cooling fan installation applicable
for this maintenance interval.
4.14 220 hours max
Nose Avionics
Compartment Fans
Operational Check
For aircraft equipped per MDL 005-00629-
00 Rev 7 or latest FAA approved revision, or
modified per Garmin Service Bulletin 1375:
Functional test of the GIA1 and GIA2 ported
fans. Verify airflow from all fan ports
NOTE: See Section 6.29, Figure 6-7, for
identification of cooling fan installation applicable
for this maintenance interval.
4.14 820 hours max
Instrument Panel
Fans Operational
Check
Functional test of the PFD1, MFD and PFD2
cooling fans. Verify airflow from each fan
4.15 820 hours max
* Denotes Airworthiness Limitation Maintenance Requirement (See Section 4.1)










