It has been my understanding that the standard in place at the time of the contract is what should be expected. When the standards are supercede the notes usually state something like " This standard has been superceded and shall not be used for new contracts "  This still leaves the question open on some older, ongoing contracts. I would normally expect my supplier to use the current spec. But I know others will disagree. If there is a compelling reason to use the older spec. I would hope the buyer would inform the supplier. 
Charles Caswell
-----Original Message-----
From: d. terstegge [mailto:[log in to unmask]]
Sent: Monday, August 25, 2003 9:22 AM
To: [log in to unmask]
Subject: [TN] Mil-P-55110 versus MIL-PRF-31032


Hi Technet,

Mil-P-55110D is not active anymore, and has been replaced by
MIL-PRF-31032.
If the production-drawing states "PCB shall be produced according to to
MIL-P-55110D" does it mean that the board manufacturer has the freedom
to use the replacement specification ?
The specific issue is that Mil-P-55110 D does not allow exposed fibers,
whereas Mil-PRF-31032 does allow this (with some restrictions of
course), but I assume there are more diffferences between these two
specs.

Best regards,

Daan Terstegge
Thales Communications
Unclassified mail
Personal Website: http://www.smtinfo.net

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