Hi Phil I think the Kapton issue in aircraft relates to an incident with Boeing 747. I believe over time the Kapton can deteriorate and wires short out causing sparks, which from memory of the TV article I saw, was a possible cause of the centre fuel tank explosion. You may like to try Boeing for clarification. Or maybe FAA incident reports. Regards - Garry ################################################################ TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################