Hi All I dug up the original response from NASA so here it is Susan, All of the NHB 5300.4 series of documents have been canceled. Specifically, NHB 5300.4 (3I) was canceled 6/11/96 with a recommendation from NASA HQ, Code Q that IPC D-275 should be used. This is found in the Code Q document tree at the following URL: <http:/www.hq.nasa.gov/office/codeq/doctree/qdoc.pdf> I have checked the status of IPC D-275 and find it to be still active under the number ANSI/IPC D275-1991 and available from ANSI. There is some question in my mind as to whether the intent of ANSI/IPC is to retain it as an active document or to withdraw it. If you have further questions, I suggest that you contact Wayne Frazier at NASA HQ's, [log in to unmask] Joe Jones for Paul Gill 256-544-7358 ############################################################## 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 ##############################################################