00-07-09     .....

From:   EXT-Fogg, Larry L [SMTP:Larry.Fogg@xxx.Boeing.com]     Sent:    Wednesday, July 05, 2000 12:16 PM

To:       'Jim Foot'; 'John Garstang'; 'Andre Turenne'     Cc:       Berry-Jr, John C; Fiocca, Paul V; Rosnik, Pamela S; Hinderberger, Ron J; Harris, Thomas G

Subject:           Wire Insulation Materials

Jim, John and Andre -

            I have reviewed the wires in the waterfall area on the Forward Drop Ceiling reconstruction fixture here at Shearwater.  The white wires within Wire Run FDC that were double shielded and jacketed 2 conductor 20 gage twisted wires were listed as wire Material Code 2 on the Conduit Loading printout for the Swissair Flight 111 airplane.  These wires had been installed for the ADF 2 antenna unit and were manufactured either by Champlain Cable Corporation as Part Number 35-01611 wire or by Teledyne Thermatics as Part Number 12378-1.  A copy of Champlain drawing 35-01611 was provided to Jim Foot by Paul Fiocca at Ottawa on 21 June 2000 and I had provided a copy of Teledyne Thermatics drawing 12378-1 (TSB Control No. 007640) to Jim Foot on 27 Feb 2000.  Both of these wires utilized Fluorinated Ethylene Propylene (FEP) as the outer jacket insulation material and as the inner jacket material between the inner and outer shields.  This material appears to be virtually the same material composition as the Fluorinated Ethylene Propylene (FEP) material utilized in the DMS 2024 Revision B Type 1 convoluted, thin wall, spare wire conduits. 

            I provided a copy of Champlain drawing 35-01611 to Lee Garstang when I returned to Halifax and it has been logged with TSB Control No. 011887.

            In addition, I was unable to obtain any of the wire identification marker tape from the heat damaged double shielded wires within the waterfall area to specifically identify the supplier of those wires.  I did locate a piece of double shielded and jacketed 2 conductor 20 gage twisted wire approximately 22 inches long in 12A Bulk Box 1-5973 which had no heat damage and I had this piece of wire identified as Exhibit 1-13563.  The Exhibit 1-13563 wire had the wire identification marker tape which identified the wire as Part Number 12378-1 with Vendor Code 12515 which corresponds to the Teledyne Thermatics wire. 

            Two other white wires within Wire Run FDC which were single shielded and jacketed 2 conductor 22 gage wires were listed as wire Material Code 118 on the Conduit Loading printout for the Swissair 111 airplane.  These wires had been installed for the Engine Vibration No. 2 circuit and were in accordance with McDonnell Douglas Specification BXS7009.  Paul Fiocca provided Jim Foot with several pages of BXS7009 at Ottawa on 21 June 2000 and I had provided a complete copy of BXS7009 (TSB Control Number 007642) to Jim Foot on 27 February 2000.  The outer jacket on this wire is taped and sintered Polytetrafluoroethylene (PTFE).

            The existing wire review notes had listed McDonnell Douglas Specification 7801684 as the wire specification for the ADF Antenna wires associated with Wire Run FDC based upon verbal information acquired early in the investigation.  I had provided Jim Foot with a copy of Specification 7801684 (TSB Control No. 007641) on 27 February 2000.  A review of the Teledyne Thermatics drawing 12378-1 indicates that the individual 20 gage wires within the inner shield were Specification 7801684 wires.  I have revised the wire review notes to delete the references to Specification 7801684 and to incorporate the Champlain and Teledyne Thermatic information. 

 Larry L. Fogg

             The first paragraph indicates that the wire coatings and the conduit are the same material, Fluorinated Ethylene Propylene, otherwise known as FEP.  If our (or any other) lab has been asked to examine these same wires for FEP with the intent of showing that its presence indicates its original placement in the conduits, this it is a waste of time and is an incorrect procedure. 

            I am debating sending an email to FOOT about this, but I think the lab has already done most of the work.  So instead I will just see what comes of the data.  Should FOOT try to use it to prove the placement of the wires, FOGG will be aware of it.  It should be sufficient that we monitor it and ensure that the data is not improperly used to place wires where they might not belong.  After all, GARSTANG indicated that he is getting NORMAN to examine for other things as well.