L21 Windows and Skylight

KJC

FRIEND

Clear Lake, MN

• Mar 24, 2020

• #1

I see Atlee sells an STC to convert a standard D window fuselage to L21 glass and skylight. Is it really necessary to have an STC if it’s on the Type Certificate? Shouldn’t this be just a minor with a logbook entry?

 

wireweinie

FOUNDER

Palmer, AK

• Mar 24, 2020

• #2

Yes. The STC is sometimes used as an easy way to be able to market an aircraft item.

Web

 

mike mcs repair

Registered User

chugiak AK

• Mar 24, 2020

• #3

I would think just log & 337 for welding


Sent from my iPhone using SuperCub.Org

 

KJC

FRIEND

Clear Lake, MN

• Mar 24, 2020

• #4

That’s what I’m thinking as well. Not even really a minor because it’s on the Type Certificate. Maybe just “Welded new L21 windows per Piper Drawing xxx. All welding IAW 43.13 etc etc.... “

 

wireweinie

FOUNDER

Palmer, AK

• Mar 24, 2020

• #5

Just make sure you talk to your IA. If he doesn't like it after you do the change, it's darn inconvenient to find another IA.

Web

 

B

bob turner

Registered User

• Mar 24, 2020

• #6

Talk to your IA first. If he/she doesn't like it, consider finding another IA. This one seems like a no-brainer.

I have been known to insist on field approvals to put PA-11 parts on a J3, but L4 windows do not bother me in the least. The window configuration varies all over the place. We just reference the Piper drawing.

 

KJC

FRIEND

Clear Lake, MN

• Mar 24, 2020

• #7

Not a problem. I sign the first block and have a friend sign the second. I probably should get my IA after 28 years. Just don’t do enough work to justify keeping it current.

 

skywagon8a

MEMBER

SE Mass MA6

• Mar 25, 2020

• #8

KJC said:

Not a problem. I sign the first block and have a friend sign the second. I probably should get my IA after 28 years. Just don’t do enough work to justify keeping it current.

Click to expand...

As long as you have your friend you are good. If not, all you need is to take one of the on-line recurrent courses. Simple.