Fcc Grant Of Equipment Authorization; Afm/Afms/Poh Considerations - Garmin GTN 625 Installation Manual

1.5.5

FCC Grant of Equipment Authorization

1.5.6

AFM/AFMS/POH Considerations

The following information may be used as guidance in developing an approved AFM, AFMS, and/or POH
when not installed in accordance with an STC provided the installation is:

comprised of one or more TSO-C146c Class 3 approved Garmin GTN 625/635/650 Display
Unit(s), with GTP software version 4.0 or later approved version, and one or more Garmin
approved GPS/SBAS antenna(s) (Table 1-3),
 in accordance with the guidance in AC 20-138C and the installation instructions in this manual.
For installations or operation that requires dual GNSS installations, the installation needs to include one or
more GTN 625/635/650 units along with another Garmin TSO-C146a or TSO-C146c Class 3 approved
GPS units (such as the GNS 400W/500W series unit with GPS software version 3.0 or later or 
GTN 725/750 series unit with GPS software version 4.0 or later).
When using the following information to develop the AFMS, the information in [brackets] are examples
and should be updated appropriately for the specific installation and the equipment installed in the specific
aircraft. When using the following information to develop the AFMS, the paragraphs "applicable to dual
installations" should be included only for aircraft that include dual GNSS installations.
GARMIN GNSS (GPS/SBAS) NAVIGATION SYSTEM EQUIPMENT APPROVALS
For FAA approved installations in U.S. registered aircraft:
The Garmin GNSS navigation system is a GPS system with a Satellite Based Augmentation System
(SBAS), comprised of one or more Garmin [TSO-C146c GTN 625/635/650 navigator(s) with GPS
software version 4.0]and one or more Garmin approved GPS/SBAS antenna(s). The Garmin GNSS
navigation system [in this aircraft] is installed in accordance with [AC 20-138C].
The Garmin GNSS navigation system installed in this aircraft, complies with the requirements of [AC 20-
138C] and has airworthiness approval for navigation using GPS and SBAS (within the coverage of a
Satellite Based Augmentation System complying with ICAO Annex 10) for IFR en route, terminal area,
and non-precision approach operations (including those approaches titled "GPS", "or GPS", and "RNAV
(GPS)" approaches). The Garmin GNSS navigation system is approved for approach procedures with
vertical guidance including "LPV" and "LNAV/VNAV" and without vertical guidance including "LP and
"LNAV," within the U.S. National Airspace System.
The Garmin GNSS navigation system complies with the equipment requirements of AC 90-105 and meets
the equipment performance and functional requirements to conduct RNP terminal departure and arrival
procedures and RNP approach procedures without RF (radius to fix) legs. Part 91 subpart K, 121, 125,
129, and 135 operators require operational approval from the FAA.
The Garmin GNSS navigation system complies with the equipment requirements of AC 90-100A for
RNAV 2 and RNAV 1 operations. In accordance with AC 90-100A, Part 91 operators (except subpart K)
following the aircraft and training guidance in AC 90-100A are authorized to fly RNAV 2 and RNAV 1
procedures. Part 91 subpart K, 121, 125, 129, and 135 operators require operational approval from the
FAA.
190-01004-02
Rev. F
Model
GTN 635 IPH-01594
GTN 650 IPH-01594
FCC ID
1312A-01594
1312A-01594
GTN 625/635/650 TSO Installation Manual
IC ID
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