Regulatory Compliance; Tso Authorization And Advisory Circular References - Garmin GTN 625 Installation Manual

1.5 Regulatory Compliance

1.5.1

TSO Authorization and Advisory Circular References

The 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 in compliance with 
14 CFR part 43 or the applicable airworthiness requirements.
All GTN unit functions are design approved under the TSO. Unauthorized changes or modifications to any
GTN unit product may void the compliance to required regulations and authorization for continued
equipment usage.
The GTN units provide a GPS position output for use with ADS-B output equipment. It is the installer's
responsibility to ensure the ADS-B Out system is compliant with AC 20-165 and to ensure compatibility
between the GTN unit and the ADS-B Out equipment. See Garmin ADS-B Out Compatible Equipment
(Garmin P/N 190-01533-00) for compatible equipment shown to be eligible for 14 CFR 91.227-compliant
installations in accordance with AC 20-165.
FIS-B information is to be used for pilot planning decisions and pilot near-term decisions focused on
avoiding areas of inclement weather that are beyond visual range or where poor visibility precludes visual
acquisition of inclement weather.
FIS-B weather and NAS status information may be used as follows:
1. To promote pilot awareness of own ship location with respect to reported weather, including haz-
ardous meteorological conditions, NAS status indicators, and enhance pilot planning decisions and
pilot near-term decision-making.
2. To cue the pilot to communicate with the Air Traffic Control controller, Flight Service Station
specialist, operator dispatch, or airline operations control center for general and mission critical
meteorological information, NAS status conditions, or both.
FIS-B information, including, weather information, NOTAMs, and TFR areas, are intended for the sole
purpose of assisting in long- and near-term planning decision making. The system lacks sufficient
resolution and updating capability necessary for aerial maneuvering associated with immediate decisions.
GTN 625/635/650 TSO Installation Manual
Page 1-14
190-01004-02
Rev. F