Open window in flight?

[dane]

The only mention of the windows that I can find in the AFM are in the checklists, "close window before takeoff", basically. Does anyone know, is flight with one or both windows open permitted? If so, is there a speed limitation? I think I've seen a placard in a CarbonCub that had an open-window speed limit, but saw no such notice in the XCub.

[Don Yarbrough]

Dane,

81mph with ONE window open. Two open windows tends to assist in the removal of a D-Window.

[dane]

What is a D-Window?

[Don Yarbrough]

Dane,

D-Window refers to the windows aft of the opening side windows, named for the traditional "D" shape on traditional Cubs.

[dane]

Gotcha. I’d like to keep all of the windows attached to the aircraft! So, only open one window, and keep it below 81mph. I’ll give it a try on the next warm day!

[Rick Bosshardt]

Dane,
I keep it in the 70's, and also open the door if opening the right side window! Its fun and good for low and slow sightseeing!

[ceslaw]

I prefer to open the left than the right. The prop wash keeps the left one open even without latching. Not so on the right.

[stretch]

I fly window down a lot. either works great, never both, keep it slow.

[Pete Brown]

Pretty sure that Springloaded adds a channel on the front edge of the D windows to help secure them in place for open door excursions. Maybe he'll chime in.

pb

[Pete D]

Pretty sure that Springloaded adds a channel on the front edge of the D windows to help secure them in place for open door excursions. Maybe he'll chime in.

pb

XCub has a metal trim piece over the front of both D windows as part of the design.