Hi Susan - I think since MIL-C-28809 went by the wayside, there is no longer a limit as to allowable quantity of jumper wires on production boards. So far as quantity of wires goes, you may want to consider first, the origin of the jumper wire requirement: Engineering changes - jumper wires resulting from engineering changes are ultimately an economic factor - if they are cost effective, then there should be no quantity limit (within reason, of course). (Obviously the weight of the wire should not be allowed to exceed that of the board - HA!) Repairs - jumper wires resulting from KNOWN causes, ie., cut circuit, field damage, etc., should probably not be limited in quantity; Repairs - jumper wires resulting from UNKNOWN causes, ie., circuit opened up in test, circuit open for no dicernible reason, etc., should probably be limited to only 2 or 3 per assembly. (Boards with these type failures pose a substantial risk of deteriorating further, assuming such causes are faults at trace to barrel junctions, etc.) Repairs to render combat serviceable, in the field - none of the above apply. The situation with prototype and development boards, obviously, is not included above. Regards - Kelly -----Original Message----- From: [log in to unmask] <[log in to unmask]> To: [log in to unmask] <[log in to unmask]> Date: Wednesday, December 15, 1999 8:49 AM Subject: [TN] assembly-jumper wires >Hi All >Is there a document that addresses the number of jumper wires that can be >used >on an assembly that are not a part of the original design. You know the kind >that >are put on to solve "open" problems. Geeeesh! > >Susan Mansilla > >############################################################## >TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c >############################################################## >To subscribe/unsubscribe, send a message to [log in to unmask] with following text in >the body: >To subscribe: SUBSCRIBE TECHNET <your full name> >To unsubscribe: SIGNOFF TECHNET >############################################################## >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional >information. >If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or >847-509-9700 ext.5365 >############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################