Table 4-8, Rear Fuselage And Empennage Visual Inspection Procedure - Garmin G1000 Nxi System Maintenance Manual

Table 4-8, Rear Fuselage and Empennage Visual Inspection Procedure

Item
Inspect the external Wi-Fi antenna (if installed) for leading edge erosion and condition of
Wi-Fi Antenna
base seals.
To gain access for the following Inspections, refer to the servo installation drawings and the King Air 300 Series Maintenance
Manual, listed in Table 1-1.
a)
Tail Wiring Harness
b)
a)
b)
c)
d)
GFC 700 Equipment
e)
f)
g)
h)
i)
The GMU 44 units are mounted in the tailcone or the horizontal stabilizer. Refer to Section 6.10 for details on gaining access to
the GMU.
For each GMU 44, do the following:
a)
b)
GMU 44 (Qty 2)
c)
d)
e)
Inspect the GRA 5500 unit (if installed) and connectors for corrosion or other defects.
GRA 5500 Radar
Check the integrity of the shield block ground attachments to the harness connector
Altimeter
assembly as well as the integrity of the individual shield and their attachment.
GTX 335R, GTX Inspect the GTX units, shelf, brackets and connectors for corrosion or other defects.
345R, GTX 33 ( ) or Check the integrity of the shield block ground attachments to the harness connector
GTX 3000 (Qty 2) assembly as well as the integrity of the individual shields and their attachment.
Inspect the GDL 59 unit (if installed), shelf, brackets and connectors for corrosion or other
GDL 59
defects. Check the integrity of the shield block ground attachments to the harness
(Wi-Fi option only)
connector assembly as well as the integrity of the individual shields and their attachment.
Inspect the GSR 56 unit (if installed), shelf, brackets and connectors for corrosion or other
GSR 56
defects. Check the integrity of the shield block ground attachments to the harness
(iridium option only)
connector assembly as well as the integrity of the individual shields and their attachment.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Description/Procedure
Inspect all exposed wire harness for chafing, damage, proper routing of wire bundles
and security of attachment in accordance with AC 43.13-1B, Chapter 11, Section 8,
Paragraph 11-96 and the Tail Wire Harness Routing drawing, listed in Table 1-1.
Pay particular attention to possible areas of wire chafing.
Verify security of aft bulkhead connectors.
Using a flashlight, inspect the servos, servo gearboxes, connectors, support
structure, and control cables to ensure that no corrosion, chafing, cracks, or other
defects exist.
For pitch and pitch trim servo gearboxes, check that the retaining bolt for the slip
clutch cartridge is not damaged or loose.
For the GSM 9100 yaw servo mount, verify the following are tightly secured: two
capstan retaining screws, six drive shaft seal screws, and hole plug. If any of these
items are missing or loose, remove the servo mount and send to an Authorized
Service Center for repair. Also visually inspect the hydrophobic vent and remove any
obstructions if present.
Have an assistant manually move the control surfaces and elevator trim wheel from
stop to stop and visually observe the corresponding servo and control cabling.
Ensure there is no binding in the control cabling, and that the capstan rotates freely.
Check the servo control cables in accordance with AC 43.13-1B, Chapter 7, Section
8, Paragraph 7-149 to ensure no fraying, corrosion, or other damage exists. If the
condition of the cable is questionable, replace it with a new one.
Check the tension on the control cables. Refer to the respective servo installation
drawing listed in Table 1-1 for cable tension specifications.
Ensure that each cable is correctly attached to the clamps.
Follow recommended checks for checking main control cables, following the
instructions in Chapter 27, Flight Controls, of the King Air 300 Series Maintenance
Manual, listed in Table 1-1.
Reinstall the access panels if no other maintenance is to be performed.
Remove the three Phillips screws holding the GMU to the mounting bracket. Be sure
to use a non-magnetic screwdriver to avoid harming the GMU.
Carefully remove the assembly, taking care not to damage unit or wiring, and inspect
the GMU 44 and mounting plate.
Inspect the mounting hardware and GMU 44 for corrosion or other damage.
Inspect all exposed GMU wiring and ensure no chafing, wear, or other damage exists
in accordance with AC 43.13-1B, Chapter 11, Section 8, Paragraph 11-96 and the
Wire Harness Installation, Tail drawing, listed in Table 1-1. Pay particular attention to
possible areas of wire chafing.
Reinstall the GMU 44.
Initials
Page 113
Revision 1