AD 99-05-09, AD 84-26-02 - Paper Induction Filters

[CC268]

AD 84-26-02 says it applies to all small aircraft that use paper induction filters - can't exceed 500 hours time in service for any paper induction filter.

AD 99-05-09 is a Piper specific AD for Purolator part number (P/N) 638873, which is what my Cherokee 140 uses. This AD requires the air filter to be replaced if:

(1) Was manufactured anytime from January 1997 through September 1998; and
(2) Is identified with a .250 (1/4)-inch high (white) ink stamp "FACET - 638873", and may include "FAA-PMA".

This AD 99-05-09 was complied with way back before I got the plane. But I assume the AD 84-26-02 still applies in the sense that you must replace a paper induction filter before 500 hours? Is that correct?

 

[Checkout_my_Six]

yup....

 

[CC268]

yup....

Cool I figured just wanted to make sure. Thanks

 

[SkyDog58]

Whoa... wait one freakin' minute...

Let an expert weigh in on this.

oh never mind.

I can't find one.

I just thought that was too quick and simple so I thought it must be wrong.

Carry on.

 

[GlennAB1]

AD 99-05-09 was complied with way back before I got the plane. But I assume the AD 84-26-02 still applies in the sense that you must replace a paper induction filter before 500 hours? Is that correct?

No.
It actually reads:
"Within the next one hundred hours time-in-service after the
effective date of this AD or prior to the accumulation of 500
hours time-in-service on the filter, whichever occurs later, and
thereafter at intervals not exceeding 500 hours time-in-service
on the filter"
So, you can probably run it right up to 500 hours.
Better, SkyDog?

 

[Dan Thomas]

If you're using Donaldson filters, they're not paper anymore. They're some synthetic material and the AD doesn't apply.

http://donaldsonaerospace-defense.com/library/files/documents/pdfs/007217.pdf

 

[Checkout_my_Six]

that's nice...the last one looked like paper though.

 

[CC268]

No.
It actually reads:
"Within the next one hundred hours time-in-service after the
effective date of this AD or prior to the accumulation of 500
hours time-in-service on the filter, whichever occurs later, and
thereafter at intervals not exceeding 500 hours time-in-service
on the filter"
So, you can probably run it right up to 500 hours.
Better, SkyDog?

Uhh...ok...pretty close to what I said

 

[GlennAB1]

Uhh...ok...pretty close to what I said

Close. Close only counts in what?

 

[Checkout_my_Six]

If you're using Donaldson filters, they're not paper anymore. They're some synthetic material and the AD doesn't apply.

http://donaldsonaerospace-defense.com/library/files/documents/pdfs/007217.pdf

yeah but....that's not what they recommend.....and.

Replace your air filter after three years, five cleanings or 500
flight hours; whichever occurs first.

 

[CC268]

Close. Close only counts in what?

I said before 500 hours you said up to 500 hours.

 

[Timbeck2]

Close. Close only counts in what?

Why horse shoes and hand grenades - of course.