Garmin Apollo CNX80, Installation Manual

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Limitations
Apollo CNX80 Installation Manual 560-0982-00 Rev D
5-1
5 L
IMITATIONS
5.1 O
PERATION
There are no Part 23 aircraft type limitations. All functions of the CNX80 meets the appropriate design
assurance qualifications for primary or secondary for airplane Class I, Class II, Class III, and Class IV in
accordance with AC 23.1309-1C Figure 2. The TSO authorizations with the RTCA/DO178B software
levels by function are listed in Table 1-1.
TSO-C146a defines loss of function of en route, terminal, nonprecision approach, or precision approach
navigation data as a major failure condition. AC 23.1309-1C provides guidance for IFR airplanes that
classifies total loss of function as a major failure condition, and loss of primary means of function as minor
if two navigation systems are installed. One method to meet the major failure condition for loss of function
is to install redundant systems. It is recommended that the aircraft be equipped with at least two
independent navigation receivers and two independent communication transceivers for IFR use. For
independent navigation systems, two CNX80 units may be used, or a combination of CNX80 and an
independent Nav/Com unit may be used
. This will support a System Safety Assessment of minor for IFR
operations. Refer to AC 23.1309-1C.
The installation of a CNX80 into an aircraft does not alter the operational approvals previously granted to
that aircraft. Additional operation approvals may require FAA evaluation of all the systems installed in a
particular aircraft and is outside the scope of the CNX80 STC.
5.2 I
NSTALLATION
The conditions and test 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 CNX80 WAAS/GPS receiver and antenna are compatible with aircraft equipped with SATCOM.
5.2.1 GPS A
NTENNA
The WAAS/GPS receiver is only compatible with the Garmin AT A-33 (590-1104) or A-34 (590-1112)
antennas, or those with equivalent specifications. Refer to section 1.3.10.1 for specifications.
5.2.2 A
NTENNA
I
NSTALLATION
– G
ENERAL
Antenna installation in the pressure vessel of pressurized aircraft is beyond the scope of the CNX80 STC.
Additional manufacturer's data may be necessary and FAA approval may be required to cover the
installation of any antenna in the pressure vessel of a pressurized aircraft.
5.2.3 E
QUIPMENT
I
NTERFACED TO THE
CNX80
CNX80 interfaces to aircraft systems other than those shown in this installation manual are outside the
scope of this manual and may require further evaluation and/or certification approval.
All equipment interfaced to the CNX80 must be previously or concurrently approved.