From air net
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User currently offlinemandala499 From Indonesia, joined Aug 2001, 6991 posts, RR: 78
Reply 181, posted Wed Jan 21 2015 23:30:32 your local time (7 hours 46 minutes 55 secs ago) and read 4154 times:
Quoting Kaiarahi (Reply 164):
Regarding the continuous left turn, and reversion to alternate law, there were reports a number of years ago of FAC (flight augmentation computer) faults on A320s resulting in "runaway" rudder trim. From Youtube (not "runaway", but ...
My understanding (Pihero, Mandala499 correct me if I'm wrong) is that FAC failure will also result in a reversion to Alternate2, with a number of protections being lost.
You got something there...
Ironically a local media called me today and asked about MELs related to:
AUTO FLT RUD TRV LIM (and 2)
ELAC 1 FAULT
Rudder travel limiter 2 fault identification and MEL Cat C allowances
AUTO FLT RUD TRV LIM SYS
FAC 2 FAULT
This... they said was from the aircraft's write up...
Quoting Pihero (Reply 168):
"Safety Recommendation 2010-092
It is recommended that Airbus alert all operators of A320-series aircraft of the possibility that an electrical power generation system fault may not be clearly annunciated on the ECAM, and may lead to uncommanded rudder trim operation.",
Uncommanded rudder command or rudder trim is being suspected.