Fire Safety in Hidden Inaccessible Areas - Center for Advanced ...

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Intermediate Scale Fire TestResults for Aircraft WiringWire description(Test bundle- number of wires)Length(inches)Flame(seconds)Drippings(seconds)Smoke(subjective)PVC/Nylon -25 28 45 0 denseCrosslinked ETFE- 25 12 0 0 mediumPTFE/Polyimide/PTFE -25 8.5 0 0 lowPTFE/Mica -25 6 0 0 lowPolyimide -25 8 0 0 lowCrosslinked Polyalkene -25 12 0 0 lowZero Halogen -10 44 14010 dripsreporteddensePlenum Cable -10 29 0 0 mediumRiser Cable -10 31 0 0 medium
PVC Wiring! 60° Bunsen Burner Test– Not a severe test– Does not challenge superior fire resistance ofKapton and Fluoropolymer Wiring– Added to FAR’s in 1972– Prior to 1972, no explicit test requirement forwiring! Concern: flammability of PVC wiring in olderaircraft
Page 1: Concerns with Fire Safety inHidden
Page 8 and 9: Delta MD-88Cincinnati, OhioSeptembe
Page 10 and 11: Boeing 757Copenhagen, DenmarkNovemb
Page 12 and 13: Air Tran DC9Atlanta, GANovember 29,
Page 14 and 15: Intermediate Scale FlamePropagation
Page 16 and 17: Thermal Acoustic Insulation! AD Iss
Page 18 and 19: Insulation Tape andHook & Loop! Rec
Page 20 and 21: 60° Bunsen Burner TestResults for
Page 24 and 25: Drip Shield/DuctAdhesive Problem! D
Page 26 and 27: Dust Seal Problem! Dust seal protec
Page 28 and 29: DeltaL-1011Frankfurt to Atlanta (Go
Page 31 and 32: Contamination! Past FAA Fire Tests
Page 33: Conclusions! In-Flight fires origin

Fire Safety in Hidden Inaccessible Areas - Center for Advanced ...

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