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Aviation History
1956
1956 - 1077.PDF
223 possible an extra payload of 4,500 lb gets with no , and V"*°"5 of « Sani Mon'i ^the P™10^ N3°1AA made its first nigh" at banta Momca. Since this latest Douglas DC series nisengined transpon has already been very wntpletety d^ri crashed, hdC heavy loss of we. un uctoner /«. i«*d7 •> rv^« ^ ^ ican «iri.n. UC-6 caught fire but, thanks to superb ;, all the occupants escaping. 70 of the (domestic th^' t **"? 2f intense and ""^ Painstaking investigations of&e wreckage of the two crashes, including a mosi elaborate re" on- struction of the burnt-out remains of the United DC-6 fuselage?h^S ^"S"' " WaS discover«l that fire was liable to occur in K"^ ^o compartment, owing to petrol overflowingfrom the fuel tank vents (located in the wing centre section) and pouring into anintake for heaters in the cargo compart- ment. No fewer than 132 design "mods"were recommended by the C.A.A. and Douglas—about half of them were compul-sory—before the DC-6 could re-enter air- luie service. These cost American Airlinesalone some $3,000,000 for its fleet of 50, andDouglas bore the bulk of this expense! a, !«e t C6 eventually resumed its roleas one of the prune favourites among air- line passengers all over the world and anrst-class money-maker for its operators Break-even cost for a DC-6 is normally a0/ per cent load factor with current opera- tional expenses. Maximum cruising speed at20Snfcfn 3°! mph' and 325 ^pKat zo,OOOf t, depending upon all-up weights. Performance of the DC-6B series is ofcourse, a very substantial improvement on these figures. Main differences between the DC-6and the greatly improved DC-6B ver- FBGOC—one of the five DC-6Bs supplied to *he French airline T.A.I. This particular 68 mate a remarkable non-stop delivery flight "om,jLoi Angeles to Paris on Moy 29/30, 1953—5700 miles in 20 hr 28 min. oi5lwe.si' K raff Hnd Sabena,L ,S°lar order A.S total Alitalia*5 i -7 *f_evf'-increasing and urgent demands for both the I 7s, Douglas at Santa Monica have stepped up deliveries rvn~ ro therate of eight units monthly, whichTwiU late? te ;hZ"r^ '" »• JIS 1S a remarkabk tribute to the efficiency of the Company s production planners working in close haraony
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