Instruction Manual

400W Series P/N 190-00356-65 Rev. D
Instructions for Continued Airworthiness Page 5 of 12
2.2 Description of Alteration
The Garmin Model 400W Series GPS/WAAS Nav/Com unit is a 6 ¼ inch wide panel mounted unit with
all the interface connections behind the instrument panel. Installation of the Garmin Model 400W Series
GPS/WAAS Nav/Com system interfaces, specific for the aircraft installation, is documented in the
GNS 400W Series Post-Installation Checkout Log that is retained as part of the aircraft’s permanent
records. The 400W Series units combine a large number of easily acceptable controls to use the color
multi-function display, Nav and Com transceiver, GPS/WAAS navigator in a single unit.
The Flight Stream 210 brings Bluetooth connectivity to the cockpit, allowing portable electronics to
stream data to and from the installed avionics.
The Flight Stream 210 interfaces to the GNS 400W via RS-232. The Flight Stream 210 may also
interface to the GDL 88 through RS-422 and the GDL 69 through RS-232. The Flight Stream unit is a
remote mount LRU that may be located in a variety of places around the aircraft. The suggested
locations are in the cabin/cockpit area, or in the forward or aft avionics bay. See Section 3.10 in the
400W Series Installation Manual, 190-00356-02 for suggested locations and mounting information.
2.3 Control, Operating Information
See the 400W Series Installation Manual, listed under the reference documentation in paragraph 2.1 of
this document, for system operation and self-test information.
2.4 Servicing Information
None. In the event of system failure, return the unit to the manufacturer or an approved Garmin repair
station.
2.5 Periodic Maintenance Instructions
The 400W Series units are designed to detect internal failure. A thorough self-test is executed
automatically upon application of power to the units, and built-in test is continuously executed. Detected
errors are indicated on the equipment via failure annunciations and maintenance is on-condition.
Operation of the 400W Series unit is not permitted unless an inspection as described in this section has
been completed within the preceding 12 calendar months. Conduct a visual inspection on the 400W
series unit, its wire harness, and the Flight Stream 210 (if installed) to insure installation integrity:
1. Inspect the 400W and Flight Stream units for security of attachment. If the Flight Stream 210 is
installed and screws are not securely attached, tighten any loose Flight Stream 210 mounting
screws as necessary to snug plus ¼ turn. If required, re-torque bonding strap hardware to 12-15
in-lbs.
CAUTION
Care should be taken when tightening the mounting screws of the
Flight Stream 210. Excessive tightening may damage the mounting flange.
2. Inspect for signs of corrosion.
3. Inspect all knobs and buttons for legibility.
4. Inspect condition of wiring, shield terminations, routing and attachment/clamping.