Q400 Prop Blades

[WhiskeyWhiskey]

Any cracks allowed whatsoever? I was told that certain cracks are allowed at the root on the non-leading edge. (If that makes any sense) I was always under the impression any blade, any crack, automatic scrap.

[xchox]

Weird. I was wondering the same thing. Dowty blades.

[BKerns]

Seen a Porter flight get held up once when a passenger, who was a pilot with a 703 operator, noticed a crack on the prop. So the pilot came out and we all took a close look and sure enough a crack at the aft root area of the prop.

Then to our surprise every blade had that same crack. Quick call to maintenance and they explained the limitations and cleared the departure.

It is acceptable to have some crack if flying the Q4!

[YYCAME]

Technically it is supposed to be sealed up to prevent water ingress but that area of the Q400 blades is more of an aerodynamic filler and off the top of my head I think you are allowed up to 5 inches total if you add up the crack on both the face and back on that crack that begins at the aft part of the blade root.