New ACS - Cessna Wing Spar

[stackj]

Larry,

I went to the link... couldn't find your reference. Where have I gone wrong?

[WebMaster]

This is notification that a new Airworthiness Concern Sheet entitled Cessna Wing Spar has been released by the FAA. Comments on this ACS are due back to the FAA no later than August 30, 2010

To review this Airworthiness Concern, please see the AOPA ACS Coordination Web site at http://www.aopa.org/gta/ad/ Comments should be emailed directly to the FAA engineer listed in the ACS. Additionally, we also ask that you submit your comments to the AOPA ACS Coordination Web site. To submit your comments click on the comment submission link at the bottom of the ACS page, attach your comments in MS Word or equivalent, type the name of the concern into the subject line and press send.

Thank you for your support.

　

Sincerely,

Kristine Hartzell

Manager, Regulatory Affairs

AOPA

301-695-2086

[WebMaster]

Update


http://www.aopa.org/gta/ad/main/inde...tail&Awcid=563

[WebMaster]

Originally Posted by stackj

Larry,

I went to the link... couldn't find your reference. Where have I gone wrong?

Here's a quote from the first document

FAA Description of Airworthiness Concern
The Cessna Multi-Engine Service Letter ME78-2, dated February 13, 1978, and Airworthiness Directive (AD) 78-09-05 require a dye penetrant inspection of the rear spar cap. Dye penetrant is no longer considered acceptable for the following reasons:

There is also reference to an inspection method outlined in a SID, but since we haven't seen those, I don't know how we can comply.

That's just my .02 for starters.

[Skymaster337B]

I own an Eddy Current machine that is specified in the Cessna Service Bulletin, which the AD refers to. There's a few problems not addressed either before or now. First, it is important that Cessna provide a sample that the machine can be calibrated against; there is no reference to this, nor does Cessna have a part number for the required calibration sample. Additionally, most of the bolt holes in the front spare caps are threaded, making the inspection some what subjective.