Scope; Equipment Description - Garmin GPS 400W, GNC 420W Installation Manual

1.2

Scope

The installation instructions and other data contained within this manual are FAA approved under
400W/500W Series AML STC SA01933LA, which is applicable for implementation within airplanes
that are type certificated only under Civil Air Regulation 3 (CAR 3) or 14 Code of Federal Regulations
(CFR) Part 23. Only the equipment and systems interfaces described in this manual have been
determined to be mutually compatible and are operationally suitable and approved for use as
characterized herein, or within the FAA approved airplane flight manual supplement (AFMS) reflecting
main software version 2.00 and later. Some differences in operation may be observed when comparing
the information in this manual and the FAA approved AFMS to later FAA approved software versions.
Such differences will be identified in revised editions of the FAA approved AFMS characterizing later
software versions, and any applicable limitations and normal or abnormal operating conditions.
It is possible for installers and other appropriately certificated persons to seek FAA approval for
installation and operational use of the 400W Series equipment with systems not identified in this manual,
such as for aircraft certificated under 14 CFR Parts 25, 27, or 29, by means of a field approval, STC or
TC. Refer to FAA Advisory Circular (AC) 20-138A and other applicable guidance when applying for
installation and operational approval. AC 21-40 provides guidance for the STC approval process and AC
43-210 provides guidance for the field approval process. If the field approval process is used, it is
advisable to consider the conditions and stipulations in FAA Flight Standards Flight Standards
Information Bulletin for Airworthiness (FSAW), 94-32, "Guidance for Performing Field Approvals of
Installation and Operational Use of Global Positioning Systems (GPS) or GPS with Wide Area
Augmentation Systems (GPS/WAAS), Referred to as Global Navigation Satellite Systems (GNSS)
Equipment", as revised.
Regardless of applicability of the AML STC or alternative field approval application for installation and
operational approval, prior to completing the installation and before returning the airplane to service, the
installer or other appropriately certificated person is required to complete and submit an FAA Form 337
(OMB No. 2120-0020), "Major Repair and Alteration Airframe, Powerplant, Propeller, or Appliance" to
their local FAA Flight Standards District Office describing the work accomplished. The FAA Form 337
must detail the equipment and systems to which the respective GPS 400W, GNC 420W, GNC 420AW,
GNS 430W, or GNS 430AW is interfaced and reflect appropriately approved or acceptable data for
which follow-on FAA field approval is being sought. See AC 43.9-1E for instructions for completing the
FAA Form 337.
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Equipment Description

The 400W Series units are 6.25 inches wide 2.66 inches high. The display is a 240 by 128 pixel color
LCD. The units include two removable data cards, one with a Jeppesen database (to be inserted in the left
card slot), and the second being a terrain database (to be inserted in the right card slot).
The GPS 400W is a GPS/WAAS unit that meets the requirements of Technical Standard Order (TSO)-
C146a (specified in Table 1-4) and may be approved for IFR en route, terminal, non-precision, and
precision approach operations when installed in reference to the instructions in this manual as referenced
in AML STC SA01933LA.
The GNC 420W/(AW) includes all the features of the GPS 400W, and also includes VHF
communications transceiver. The "AW" model is a 28 VDC unit with a 16 Watt COM transmitter. The
GNC 420W/(AW) meets the requirements of TSOs specified in Table 1-4.
The GNS 430W/(AW) includes all the features of the GNC 420W/(AW), and also includes airborne
VOR/localizer (LOC) and glideslope (G/S) receivers. The "AW" model is a 28 VDC unit with a 16 Watt
COM transmitter. The GNS 430W/(AW) meets the requirements of TSOs specified in Table 1-4.
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Rev. E
400W Series Installation Manual
190-00356-02