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Aviation History
1963
1963 - 0705.PDF
678 BOEING 727... Structure and general 1 Dielectric glass-fibre radome 2 Front pressure bulkhead 3 Windscreen wipers, 28V de. 4 General access hatch 5 Twin pitot pressure heads 6 Static vents 7 Unpressurized nosewheel box 8 Pilots' instrument panels 9 Passenger door 34in x 72in 10 Airstair box below floor 11 Airstair initial extension 12 Airstair carriage 13 Airstair down 14 Four seat-rails along cabin 15 Baggage/freight tie-down rails 16 Nosewheel viewing point 17 Freight-hold viewing point 18 Forged window-frame units, be in series ked 19 lOin x 14in three-pane windows 20 Galley service door 33in X 65in 21 Top and bottom members fold to allow plug-type door to pass out through doorway on inset hinges 22 Freight-hold doors 35i-, x 48in 23 Fillet-tail slides aft to reveal freight door 24 Forged alloy frames 25 Typical rolled alloy frames 26 Extruded alloy stringers 27 Floor beams 28 All frames joined in sections 29 Stringers end in fork fittings at production breaks 30 Rip-stopping doubters riveted and bonded with Epon 927 epoxy tape 31 Centre-section floor beams 32 Centre-section tank-bay diaphragms ® Mine Transport Publications Ltd 1963 Pressure-bearing floor over main- undercarriage bay Pressure-bearing bulkhead at rear of wheel bay Keel member Rear pressure bulkhead with pas senger door Engine-strut front mounting bolted to (36) Ventral airstair Airstair hydraulic control panel (manual/hydraulic back-up) Airstair actuator and pogo-stick linkage (detail, shown retracted) Airstair down-lock Four torsion boxes, upper pair com pleted by fin-box skin Fin spar attached to pressure bulk head Heavy angle-edged sub-frames Insulation blankets Freight-hold ceiling-trim Fairing over centre-engine reverser actuator Centre-engine intake fairing 49 Short ladder and manholes in fin box 50 Front and rear wing-box spars (detail) 51 Angle-stiffened ribs 52 Ribs carrying flap-loads 53 Spoiler sub-spar 54 Flap-track fairings 55 Glass-fibre honeycomb areas: wing/ fuselage fairing, rain gutter at tail, fin-top fairing, leading-edge access panels 56 Aluminium honeycomb areas: all control tabs, trailing edges of flaps, upper and lower wing-skins behind spar, all spoilers 57 Spot-welded corrugated aluminium- sandwich floor panels 58 Heavy-gauge wing skin, tapered both spanwise and chordwise, and continuous from root to tip 59 Extruded stringers riveted to skin 60 Tank inspection hatches on lower surface 61 Slat-rail pockets 62 Main wing/fuselage attachments 63 Static dischargers: glass-fibre rod with tungsten needles A Air systems Al Engine 8th-stage bleed air pre- cooled at side-engine struts A2 Air-conditioning bay under centre section (detail inset) A3 Controlled ram-air intake, bifur cated to duplicated systems A4 Outflow from A3 A5 Primary heat-exchangers A6 Secondary heat-exchangers A7 Air-cycle machines (cold-air units) A8 Water separators A9 Ground cooling-fans AI0 Supplementary intakes and actuators for (A9) All Selector valve: overhead duct or hotwall system AI2 Main cabin mixing-valve AI3 Flight-deck mixing-valve AI4 Cold-air fan and supply duct to pas senger service units AI5 Overhead duct AI6 Hotwall distribution system AI7 Cabin supply outlets combined with cove Itght (see detail) A18 Outflow at floor level to freight holds A19 Two outflow valves at rear of hold A20 Ground conditioned-air connection below A2I Pre-cooler air overboard C Flying control! CI Control handwheels, with trim switches C2 Rudder pedals, with toe-brakes C3 Cables through floor-beam fairleads C4 Tn C5 Co ct. Fu bt TT C7 El( C8 Tai C9 CIO Cll tr' til C oi ri • Tai CI2 A CI3 CI4 CI5 CI6 D- U: B Loi SI! R, CI7 Ru
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