Instruction Manual

G500H Flight Display System 190-01150-21 Rev. 2
Instructions for Continued Airworthiness Bell 407 Page 5 of 19
or later FAA Approved Revisions
Garmin 005-W0222-06 Rev. 1 “G500H
VIDEO HARNESS ASSEMBLY” or later FAA
Approved Revisions
Garmin 005-W0222-07 Rev. 2 “G500H
SERIAL ALTITUDE HARNESS ASSEMBLY”
or later FAA Approved Revisions
Garmin 005-W0222-08 Rev. 1 “G500H
TRAFFIC HARNESS ASSEMBLY” or later
FAA Approved Revisions
Retention: This document, or the information contained within,
will be included in the rotorcraft’s permanent
records.
2.2 Description of Alteration
This STC upgrades existing avionics for the Bell 407 rotorcraft as summarized below.
The Garmin G500H Flight Display System consists of an instrument panel mounted GDU 620 display
and remote mounted LRUs which provide data to the display. The GDU 620 provides controls for the
G500H system and a PFD and MFD in the pilot’s primary field of view. The remote mounted LRUs
include one GRS 77H AHRS, one GMU 44 Magnetometer, one GDC 74H ADC, and one GTP 59 OAT
probe.
Rotorcraft modified under this G500H STC are restricted to VFR only, including rotorcraft that may not
have previously been restricted to VFR. To clarify this operation limitation, a placard with the text,
“APPROVED FOR DAY/NIGHT VFR” is required to be in the pilot’s view.
A placard with the text, “MAX RATE OF CLIMB 2000 FPM” shall be installed adjacent to the primary
flight display.
All installed G500H equipment is connected to a power bus that receives power as soon as the battery
master switch is turned on.