What is Known Icing?

[NJA_Capt]

...or possibly a hard landing that ensued during touchdown.

By far the most plausible reason.

This particular airplane happened to continue flying instrument approaches for 90 minutes in icing conditions.

If this was a CFI (or not) I hope he was reprimanded for POOR decision making! I'm sure the Feds would love for him to explain his (lack of) reasoning.

...we should be aware of what happens when you fly an airplane over its weight limit and maneuver toward envelope limits (to include a hard landing).

The problem is.....you do not know where the envelope limit IS any longer. When ice accumulates on an airplane, it is not evenly distributed and it is not balanced. You have no idea how a plane will react until it does react. In your Arrow snippet above, he probably landed with full flaps as normal and encountered a tail stall which quickly dropped him to the runway.

PSA: If you are in an unprotected aircraft, do not fly in visible moisture when it is less than 10 degrees C.

 

[Andrew_VT]

The upper wing skins on the 2 arrows I fly regularly are all wrinkled though....Moreso than any other planes I've seen. I think they just have a propensity for it.

Oh and the hard landing due to early stall (due to the ice affected airfoil) makes total sence.

 

[mikecweb]

Icing is very esoteric.

That be one of them big words i don't understand...

 

[B767Driver]

If this was a CFI (or not) I hope he was reprimanded for POOR decision making! I'm sure the Feds would love for him to explain his (lack of) reasoning.

.

He was canned.