Limitations; Installation; Gps Antenna; Helicopter Installation - Garmin GTN 625 Installation Manual

2 LIMITATIONS

2.1 Installation

Conditions and tests required for TSO approval of this article are minimum performance standards. It is the
responsibility of those installing this article either on or within a specific type or class of aircraft to
determine that the aircraft installation conditions are within the TSO standards. TSO articles must have
separate approval for installation in an aircraft. The article may be installed only if performed under 14
CFR part 43 or the applicable airworthiness requirements.
The GTN GPS/SBAS receiver, when installed with an appropriate antenna listed in Table 1-3, is
compatible with aircraft equipped with SATCOM when installed in accordance to this manual.
To mitigate against the loss of navigation and communication, installation of a second navigation and/or
communication system may be required.
2.1.1

GPS Antenna

The GPS/SBAS receiver is compatible with the GPS/SBAS antennas listed in Table 1-3.
2.1.2

Helicopter Installation

The GTN 625, GTN 635, and GTN 650 with Mod Level 3, when installed with the 115-01293-A0 Install
Rack, meet RTCA/DO-160F, Section 8, Category U, Test Curve G.

2.2 Aircraft Radio

An aircraft radio station license is not required when operating in U.S. airspace, but may be required when
operating internationally.
As required by TSO-C169a, the quantitative safety objective for the VHF COM radio in the GTNs is 
-3
1 x 10 per flight hour for Part 23 Airplanes, and 1 x 10
To meet requirements for Part 25, 27, and 29 aircraft, it is necessary to install a second VHF
communications radio.

2.3 Weather Products

Product age for individual reports of SiriusXM AIRMETs, SIGMETs, City Forecasts, County Warnings,
Cell Movement and TFRs are not provided by SiriusXM Weather Service.
Product age indication for SiriusXM Icing Potential, Winds Aloft, and Turbulence is not included on the
weather map. The valid time for these products is displayed on the weather map in place of the generation
time.
The valid time indication for SiriusXM Freezing Level and Canada Winds Aloft is not displayed. Instead,
the generation time for these is displayed.
190-01004-02
Rev. F
-5
per flight hour for Parts 25, 27, and 29 aircraft.
GTN 625/635/650 TSO Installation Manual
Page 2-1