A320 w/ IAE flaps icing buffeting
Looking forward to this one,
as I know some of you folks with have an answer.
Flew A319/320/321 with cfm engines for years, and have never come across this one.
Had to go flaps 2 early in the approach as ATC demanded a lowish speed, then went thru clouds with quite a bit of ice.
Eventually on the ILS, flaps from 3 to full, slowing to Vapp we encountered a quite pronounced airframe buffeting, and a perceived loss in stability in roll.
After landing asked the FO to retract flaps only till 2, went outside and saw a bit of ice on the leading edge of the flaps.
Had another go a few days later, again with flaps 2 thru the ice, same result.
I'm aware the IAE bus extends flaps till 40° whereas the cfm version does only 35. And heard before that flaps 40 can induce turbulence at the stab.
But this came a little unexpected, never heard of this effect before. Anyone can enlighten me please?