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Elliott Aviation Technical Products Development, Inc.
th
6601 74
Ave Building A
Milan, IL 61264
Instructions for Continued Airworthiness For Garmin ADS-B System Installation
2.3.1.3
While using the Elliott Configuration Instructions Section 5, access to the GDL 88 Diagnostics
section is available. Real time GPS information is presented.
2.3.1.4
For setup and configuration, GPS reception must be confirmed using the diagnostic page. Use
known GPS position to validate the GDL 88 diagnostic position readout such as the aircrafts
navigation GPS. This information is presented on the Pro Line 4 cockpit control display unit under
the IDX pages. Sample page below show typical GDL 88 GPS data.
2.3.1.5
After GPS reception is verified aircraft maybe returned to service.
2.3.1.6
For troubleshooting an in-service system, GPS activity may be confirmed using this diagnostic
page. Lack of GPS position may be due to disconnect antenna coax, faulty antenna or faulty GDL
88. Neither the GDL 88 nor GPS antenna is field serviceable. If faulty, the GDL 88 line replaceable
unit may only be repaired by Garmin. Replace a faulty GPS antenna with new.
Sample page:
Part number, configuration and electrical interface has been evaluated
and approved for ADS-B Latency and SDA requirements. Any deviations
will require additional approval.
PRECAUTION:
Report No.: ICA-3832-560
Revision: IR
Dated 01/23/2018
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