Garmin GTN 6 series Руководство по эксплуатации - Страница 10
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Table 2. Maintenance Intervals for Antennas Replaced Under this STC
Test – Bonding check
An electrical bonding test must be performed on antennas
GPS Antenna(s)
installed by this STC.
(Only if antenna is
1. Gain access to the antenna installation.
installed by this STC)
2. Disconnect coaxial cable(s) from the antenna connector(s)
3. Measure the resistance between the antenna connector
4. Verify the resistance is equal to or less than 10 milliohms
5. Reconnect the coaxial cable(s) to the antenna
In the event of bonding test failure, remove antenna, and clean
and prepare the mating surfaces and hardware as follows:
For antennas that are secured with nuts and bolts, clean the
fastener hole in the antenna and the underside of the fastener
head itself. Prep the area underneath the washer on the inner
mold line of the skin in accordance with Eurocopter Standard
Practices Manual (MTC 20-02-07-401). If nutplates are used
in lieu of a nut, the technician is only required to clean the
underneath of the fastener head and the fastener hole.
For antennas that use stud mounts, prep the area underneath
the washer on the inner mold line of the skin in accordance
with Eurocopter Standard Practices Manual (MTC 20-02-07-
401).
Re-install using unit replacement procedures in the GTN
6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE
MANUAL Section 5. Any reworked antenna installation shall
have a resistance of less than or equal to 2.5 milliohms.
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter EC130 Series
Page 7 of 21
and a nearby exposed portion of conductive aircraft
structure (example: exposed rivet)
per Eurocopter Standard Practices Manual (MTM 20-02-
07).
connector(s) and ensure it is secured.
Bond Check to
be performed
every 10 years or
1800 flight
hours, whichever
comes first. The
check is to be
performed in
accordance with
Chapter 24,
Section 6.2 of
the Aircraft
Maintenance
Manual during
the EC 130 600
flight hour/24
month
inspection
190-01007-K9 Rev. 1