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Qualified Products for M7885 and NAS9310
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Source：Internet Author：Unknow Pubdate：2008-04-02
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hfcphx1 (Aeronautics)
16 Nov 05 12:34
I know Boeing and Airbus have Qualified Parts List (QPL) for parts approved to their standards such as BACR15FR or ASNA0078.
How can I demostrate that a vendor part number such as CR3553 actually meets or approved to M7885/8 or NAS9310M standard other than taking what the vendor says?
aviat (Aerospace)
16 Nov 05 21:28
It is a quality control issue and depends on several factors, such as which aviation authority you fall under, and whether you are purchasing from the manufacturer or a distributor.
M7885/8 or NAS9310M are standard parts and are manufactured to a standard. The usual means to insure quality is to audit the company to ensure that they are in fact following requirements. Large companies such as Boeing can audit every company. But smaller companies usually can’t do that, but they have other options, such as using a third party auditors like C.A.S.E., AS9XXXX, and others, to do the audit for them. 字串1
Most large distributor’s either audit manufactures them self or use a third party auditor. In some authorities distributors are approved but in the U.S. it is voluntary.
For further info regarding FAA see AC 00-56A, 20-62D, and 21-20B.
planedr (Aerospace)
20 Nov 05 6:25
Check with the manufacturer they can usually provide a letter qualifying the product based on the required testing for that standard. If the letter meets your local certification requirements you should be okay. Also depending on what you need they may be able to provide a letter customized for your local regulatory authority.
It also depends on what you are using the product for and what authority the work is being done under.
An FAA DER can accept data/products, that may not be acceptable under a DND contract.
Kenneth (Aerospace)
20 Nov 05 23:20
字串5
plandr's approach is a good one. Additinally, you can ask the fastener manufacturer for their applicable FAA approved TSO (Technical Standard Order: http://www.faa.gov/aircraft/air_cert/production_approvals/tsoa/), under which they manufacture the part number under question, or look it up here: http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgTSO.nsf/TSONumber!OpenView&Start=200&Count=200&Expand=306#306). Textron Aerospace Fastener's (Cherry's) TSO: http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgTSO.nsf/TSONumber!OpenView&Start=200&Count=200&Expand=306.29#306.29.
WhiteRabbit (Aerospace)
22 Apr 06 6:49
One fastener can also be multiple certified as different part numbers. I am not stating this is the case in this particular issue these blind rivets. 字串9
I know for some rivets and Hi-Loks one fastener can have different part numbers, (HLT***, BACB30**, 3D00**).
Plus, the OEM may have a spec a little bit higher than the NAS or MS specs to force no interchangeability. This forces the use of their fasteners.
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