TRANSPONDER PANEL

Question 1

TRANSPONDER SELECTOR / ALT SOURCE SELECTOR

Answer 1

Transponder Selector.

• ATC 1 / 2: selects transponder 1 or 2

Altitude Source.

• ALT 1 /2: enables alt reporting from ADC 1 or 2 (respectively)

Question 2

TRANSPONDER MODE Selector

Answer 2

TEST: starts transponder functional test

STBY: does NOT transmit

ALT RPTG: altitude reporting

OFF: transponder STILL operates but WITHOUT altitude reporting

XPNDR: operates WITH altitude reporting

TA ONLY / TA RA: self explanatory

Question 3

XPNDR or ATC FAIL Light

Answer 3

• indicates a transponder malfuntion