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Swissair 111

Printed page 248. PDF page 260.

information indicates that the fire likely started within the confines of a relatively small area above the right rear cockpit ceiling just forward of the cockpit rear wall near STA 383. Although other potential areas were assessed, no other area
Open final report at PDF page 260TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 57. PDF page 69.

its vertical axis through 360 degrees. The light intensity is adjusted by turning the smaller diameter ring on the light head, which also serves as an ON/OFF switch. The size of the light beam, or area of illumination, is adjusted
Open final report at PDF page 69TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 95. PDF page 107.

charred or 9 mm/24 AWG/nickel extending 0.15 cm down blackened material coated wire. Small bead of copper adhering to strands. (1-3713) fused to strands adjacent to Numerous voids and 25 cm/24 AWG/nickel melted end. holes through wire. No coated insulation
Open final report at PDF page 107TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 108. PDF page 120.

filtering systems that can effectively remove most of the combustion by-products of small fires. Therefore, a fire may ignite and propagate in an inaccessible area and its detection could be delayed. Designated fire zones were identified as such because they
Open final report at PDF page 120TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 113. PDF page 125.

(see Figures 3, 8, 24, 26, and 27). The ducts from this area were reconstructed from small pieces that were straightened, identified, fracture matched and sewn together with locking wire to replicate their original shape. Most of the aluminum ducts
Open final report at PDF page 125TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 120. PDF page 132.

of alloy could not be identified. One portion of cabin carpet had an area of numerous small holes through the carpet pile and backing, which were consistent with having been caused by drop-down of hot materials. This area was from
Open final report at PDF page 132TSB A98H0003: In-flight fire leading to collision with water