Continued Airworthiness - Garmin GTX 32 Installation Manual

3.7.3 Operation/Performance Checkout
If the unit is removed from the aircraft and operated, always connect J3272 to an
antenna or a 50 Ω, 5-Watt load.
Verify proper operation of the transponder by testing as specified in Appendix F of 14 CFR, Part 43, to
AC 43-6B, and/or other appropriate regulations. The test is typically done as a ramp test using a
transponder ramp test set, such as the TIC TR-210, IFR ATC-600A or other suitable transponder test set.
Self Test
Verify that the unit does not display a failure indication when turned on.
Altitude Input
Verify that the displayed altitude matches the altimeter pressure altitude (at 29.92).
External Inputs
If the external ident or standby inputs are connected, verify operation by:
a) Verify that the unit goes to standby when the external standby input is pulled low.
b) Verify that the ident indication turns on when the external ident button is pressed
(must be in the "ON" or "ALT" modes).
3.7.4 Performance (Ramp) Test
After installation, the transponder should be tested as specified in 14 CFR Part 43 Appendix F,
AC 43-6B, and other appropriate regulations. The test is typically done as a ramp test using a transponder
ramp test set, such as the IFR ATC-600A or TIC TR-210. The ramp test includes checks as follows:
a) Reply Frequency
b) Suppression
c) Receiver Sensitivity
d) Reply RF Output Power
e) Altitude Reporting
3.8

Continued Airworthiness

Test according to Title 14 CFR §§ 91.411 and 91.413 as well as Part 43 Appendix F. Other than for
regulatory checks, maintenance of the GTX 32 is 'on condition' only.
Aircraft covered under the GTX 32 STC AML should use ICA document number 190-00303-63.
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Revision F
CAUTION
GTX 32 Installation Manual
190-00303-60