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Aviation History
1962
1962 - 0117.PDF
FLIGHT Inernational, 25 January 1962 117 First air-to-air photograph of the Avro 748 in the livery of an overseas customer. Aerolineas Argentinas will put the first of its nine Avro 748s in service on February IS on the Buenos Aires - Punta del Este route, and later on routes to Montevideo and Mar del Plata. FAMA (Flota Aereo Mercante Argentina), a predecessor of Aerolineas, operated another Hawker Siddeley product, the Avro York, during 1947-49 AIR CO E R C E BOAC'S CAPACITY SET out below, in column 1, are the Flight International estimates of BOAC's fleet capacity which appeared on page 68 of the January i 1 issue. For comparison, in column 2, are BOAC's own estimates, received as this issue went to press. BOAC considers that it is not likely, as was suggested, to have a surplus of capacity on its hands. Taking our own figures for BOAC traffic and traffic growth, the corporation estimates that overall load factor in 1964-65 will be 69 per cent and in 1966-67 60 per cent. The difference between the two estimates is accounted for, essentially, by the assumptions in respect of the build-up period of the VCIO and Super VCIO. Our assumption was based on BOAC's own annual report for 1960-61, which said (page 75) that 15 Standard VClOs would be delivered between November 1963 and August 1964. As will be seen from Table 4, BOAC will still be building up their Standard VCIO utilization in that year. Again according to BOAC's annual report, 30 Super VClOs will be delivered between October 1964 and October 1966; the utiliza tion of these aircraft in 1964-65 will, according to BOAC, be as shown in Table 4, and in 1966-67 as shown in Table 3. Other differences in the two sets of capacity estimates are of interest. For example, according to BOAC's annual report, struc tural payload of the Super VCIO will be 22.6 short tons (volumetric capacity payload was given as 24.8 tons); the actual payload capacity in service appears, according to BOAC's estimates, as 19.5. Likewise, Standard VCIO structural payload is given in BOAC's annual report as 16 (volumetric 18.7); it appears in the BOAC estimates as 15. Block speed was assumed in the case of the Boeing 707 by Flight International as 480 m.p.h. This was considered reasonable, in view of Pan American's 707-320 block speed of 492 m.p.h. and TWA's 707-320 block speed of 498 m.p.h. Accord ing to BOAC the 707 b'ock speed will be 440 m.p.h. Exactly the same speed is estimated for the Super VC10 which, according to manufacturer's figures, cruises faster than the 707. Assuming that Super VC10 operations are completely built up by 1967-68, the capacity situation, using Flight's traffic figures and traffic growth and BOAC's capacity estimates, will be as follows: l.t.m., 960; c.t.m. (assuming 30 Super VClOs utilized at 3,000hr a year) 1,530. Assuming an overall load factor of 60 per cent, BOAC's capacity in 1967-68 will be sufficient to carry 920 l.t.m. Thus capacity will match traffic in that year, assuming that BOAC's traffic grows every year between now and then at the rate of 15 per cent. Unless the corporation can attain that growth rate, as is suggested on page 125 (which went to press before this page) capacity will not match traffic. The achievement of a high growth rate is obviously BOAC's biggest challenge in the years ahead. TABLE 1 I BOAC'S FLEET IN 1966-67 Aircraft Boeing 707 VC10 Super VC10 Number 18* 12t 30 Payload (short tons) 19 16 22 Block speed (m.p.h.) 480 490 490 Utilization (hr) 3,000 3.000 3.000 Capacity (c.t.m./yr) 490m 280m 970m Total 1.740m Includes 3 ordered in Mav 1961 t Reduced from 15 to 12 in December 961 TABLE 2: BOAC'S FLEET IN 1964-65 Aircraft Comet 4 Boeing 707 VC10 Super VCIO Number 19 18 12 5* Payload (short tons) 10 19 16 22 Block speed (m.p.h.) 420 480 490 490 Utilization (hr) 3.000 3.000 3.000 3.000 Capacity (c.t.m./yr 240m 490m 280m 160m TABLE 3: BOAC Aircraft Boeing 707 VCIO Super VC10 * Build-up per TABLE 4: BOAC Aircraft Comet Boeing 707 VC10 Super VC10 "s FLEET IN 1966-67 Number 18 12 23/30 Payload (short tons) 20 15 19.5 iod—approx 75,000 hr 's FLEET IN 1964-65 ! Payload Number (short tons) 19 8.4 18 20 0/12 15 0/9 19.5 Block speed (m.p.h.) 440 430 440 in total Block speed (m.p.h.) 390 440 430 440 Utilization (hr) 3,100 3.400 * 7 Utilization (hr) 3,700 3,300 * + Capacity (c.t.m./yr) 491m 263m 644m "oral 1.398m Capacity (c.t.m/yr) 1 230m 523m 1 155m 9m Total 917m * Estimated Total 1.170m * Build-up period: approx 24.000hr + Build-up period: approx l.OOOhr
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