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Because a flight school in the southwest needed additional cooling, the factory had a template for cutting a hole in the back of the cowling strut boot to allow more air to exit the cowling, in theory, giving greater cooling. Here is the Text of the PDF for the mod with template: AK-144
Here is the hole in the back a bit larger than most:
Here is the document on Fletchair’s PhotoBucket: http://tinyurl.com/ced3tse
As David Fletcher cautions: “Don’t be cutting just any hole in boot, the IA might just need you to buy another (expensive) if there is no reference to approves data. AGAC’s AK-144
Choose your weapon wisely, grasshopper!Cheers
Roscoe
Yankee-Aviation.com
513-519-7008 -
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If you look in the original post you will see a link to Factory AK-144, so it can be applied as needed in the field by a rated mechanic who follows the AK.
Airworthiness Directives (ADs) as manadatory for flight but SK, AK, SI, SL, SB are all optional in the US.
That is a lot of letters.
Cheers
Roscoe
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