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330 transponder

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Old 4th Dec 2015, 13:46
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330 transponder

Can anyone tell me what the stby mode of the transponder does? If you are at the gate, in auto, does the unit squawk with engines off. I was under the impression that oil pressure was needed.
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Old 4th Dec 2015, 15:19
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Standby = idle doing nothing
Auto = on ground mode S only (no A/C), with TCAS on or airborne A/C/S
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Old 4th Dec 2015, 16:08
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The reason I ask, the airline I'm working for now selects stby at the gate. The other airline I worked at kept the unit in auto. I'm trying to gather enough information to submit a change to keep the unit in auto for all operations. I was under the impression that the unit would not transmit any data without oil pressure.
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Old 4th Dec 2015, 17:08
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I believe it does. Oil pressure not relevant. Makes it useable for ATC in towing etc
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Old 5th Dec 2015, 15:01
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Thanks for the input.
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