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Aviation History
1975
1975 - 0915.PDF
FLIGHT International, 22 May 197S 821 H6 Electrical and electronics ser vice bay Equipment centre for battery, transformers, rectifiers and inverters Flight engineer's panel Main circuit-breaker panel Pilot's overhead panel Electrically heated windshield Freon gas bottles in forward and rear cargo hold APU Freon fire-extinguisher system HI4 Engine pylon fire bottles (Freon, two per pylon) H7 H8 H9 HIO HII HI2 HI3 U ndercarriage Ul Forwarding-retracting hydrauli- cally actuated nosegear 49 x 17 30-PR tyres Twin steering cylinders Main undercarriage components reduced in weight (46 x 16 26- PR tyres) Body-undercarriage twin steer ing cylinders Modified 747-100 brake units U2 U3 U4 U5 Radio and instruments Rl Split-axis dual weather-radar scanner and waveguide R2 Localiser aerials (I, 2 and 3) R3 Glideslope aerials (I and 2) R4 VHF aerial I R5 VHF aerial 2 R6 ATC aerial I R7 ATC aerial 2 R8 DME aerial I R9 DME aerial 2 RIO ADF loop I Rll Marker beacon RI2 ADF loop 2 RI3 ADF sense (I and 2) RI4 LRRA RI5 VHF aerial 3 (provisional) RI6 VOR aerial (I and 2) RI7 HF aerial (I and 2) RIB Static-discharge wicks (glass- fibre) Lighting and instruments LI Upper and lower rotating beacons L2 Navigation tights L3 Logo light (both sides) L4 Landing lights (three beams per side) L5 Wing inspection light L6 Taxi lights L7 Pitot static head (two per side) L8 Incidence vane L9 Temperature probes
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