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Thread: A320 Altimeter baro difference between left and right
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Old 29th March 2010 | 08:44
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shortfuel
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From: Between Vedex and Murag!
MicroB,

ALTI DISCREPANCY will be triggered by FWCs. The difference of +/-250ft (QHN) and of +/-500ft (QNE) is detected by an external comparison inside the FWCs of the baro-corrected alti provided by ADRs.

Triggered typically when F/O and CAPT baro settings differ by more than 10 hPa (on QNH).
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