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Numt er 90 1975 * AUSTRALIAN DEPARTMENT OF TRANSPORT JlY JJl1 J!JJ~ . ~ jJ\111Y !)J!JJ,;)1 ~ I - • _.., \ Number 90 1975 CONTENTS Libelle Sheds Wings in Flight . .......... ....... 2 6 ( Tree Hazards ... ...... .. .. ... .. .. .... · · I False Alarm - Boeing 707 Over-runs . ... ...... 10 ..... - ~-= ~'~ Is Air-Sickness \'our Problem? .. .. .... .. ....... · 13 Going Around ...... .... .. ....... .. 14 Hansa Fails to Become Airborne . ........ .. .... 16 Asymmetric Operation - Can You Handle It? ..... 20 Auto-pilot Disengagement •.••....... ... .. .... 26 The Real Thing! . .. .. ... .. .. .. .. .. · . · · · 27 A Moot Point! ...... .. ....... .. · · · · · · · · · · · · · · 28 "1 l'ia1io11 Safer1· Digest i.1 prepared in the Air Safety /rt1'estiga1io11 Bra11C'i and puhlished for the Depart111e111 of 7ra11spor1 1hro11gh 1he A11s1rult1w Go1,ernme111 P11hlisl1111g Ser1•1ce m p11r.1ua11a of RegulalttJll 281 of 1'11· ;I ir \ 'av1ga1io11 Reg11la11011s. lr rs d1s1rih111ed frl'e 1~{ drarge Ill A 11stra/11111 /ice11ce holders ( e.\C'ept sr11de111 pilots J, regl\lered a1rcra_/1 u11·ners. a11d cer tain otlrer 11ersu1t.1 and orga11isatio111· lral'lllg u vested operatw11al 11111•resl in ,-I 111·1ralian civil t11 •1at1011 .4 •'WIWll Sa/<'11' D1ge.11 1.1 al"o ami!ahle 011 .wh.H'np11011 from 1'1" A u.Hralia11 v1J\'~rtr111e111 P11hl1shi11g Sen•1ce 111 s/101111 011 tire order form helo11. ("'-' a -_J © Co111111011wealf/1 of A u.Hralia 1975 7/re co111e111s o/ tlw p11hlica11011 11101' 1101 he reproduced m ll'lrole or in purl. 1V1tlrour · '"~' wr1 11e11 a111/ror11_1· of tire Depar1111e/1f o_/ Tramporl. Where 111a1erwl 1:i 11rd1ca1ed 10 he f'\- 1ral'fed jrom or based 011 a11or/rer p11bltcatio11. rlre a111/ror11r o_I thl' orig111a1or slwuld he souglrr. Tire viell'.\ expressl!d h_• persons or bod1e1· II' arlicles reproduced 111 tire A viallOll Sa.fetr Digest from othl'r sources arc 1101 11ecessarilv f/wse oj 1he Depar1111el1f Change of address: Readers 011 1he Deparmre11r's frl!e distrib111i1~11 Ii\/ should 1101i}_i• their 11eares1 Regional Of/1n: !:rnb.\cl'lher.1 sho11ld no11/_1• 1/w I A 11s1ralw11 Gover11111e111 P11blisl111rg ~WTl'IC< Edilor: (i Macartlr11r Joh, 4ssistant Ediror- R .J Maclean. Cover and these pages creasea speea ana reaucea crag. a aes1gn pn11osopny wn1cn rendered obsolete mosr Ansett operation to Lord Howe Island. The difficulty of developing a land aerodro~e Design.- .'\. Wintrip a11d P. Gill previous concepts ~nd led. step by step. to the giant swept-wing landplanes that ply at Lord Howe. and the fact that the service provided the island's only regular link with_ A unique style of Australian civ il aviation spanning four decades finally the world's air routes today. the outside world was to keep this operation going long beyond its economic life. came to an end late last year w ith the c losure ofthe Department's Rose Bay Fly Pri111ed h1• A11stralia11 Direcl Mail Ptl'. Lid.. 252-266 Mi1c/re/I Road.. But all this was to take time. In the 'meanwhile. the extensive wartime use of rendering it one of the last regular flying boat services in existence. ing Boat Base on Sydney Harbour. Ale.\andria . .V.S. W. the flying boat had provided a low-cost source of equipment for airline operations in But obviously such a situation could not be expected to continue indefinitely. Built originally in the mid-thirties for the historic London-Sydney Empire Air the early post-war years. Thus it was that Rose Bay saw its heyday in this period. and with the long-awaited completion of the island's runway. on 1 Bth September Route. the base was Australia's first truly international airport terminal. At that time. becoming the focal point. not only for the resumed London-Sydney and Tasman Sea last, the time of reckoning for the Rose Bay base had come at last. the future of large flying boats seemed assured - undoubtedly they were the answer routes. but also for numerous loca! flying boat services. Often. at this time. a veritable In outward appearance. the craft using Rose B ~y have changed little since to regular. long range. !rans-oceanic passenger services. and the graceful. luxuriously fleet of four-engined flying boats could be seen riding at anchor in the Bay. "Centauru s·s· arrival in 1936 and our cover photograph, taken shortly before Ansett's appointed. four-engined Empire boats. developed especially by Short Bros. Ltd. for SU BSCRIPTION O R DER Yet slowly. almost imperceptibly at first. progress began to take its toll. Tne Em two remaining Sandringhams left for their new home in the Virgin Islands at the end the London-Sydney route. were but the forerunners of flying ships of the future. At ASSISTANT DIRECTOR (SALES AND DIST~IBU TI ON .J pire route to London. already supplemented by Lancastrian landplanes since its of November. captures something of the base's atmosphere throughout its 39 years least that"s what many people thought when the first of the Emi:iir~ boats. Imperial AUSTRALIAN GOVERNMENT PUBLISH ING SERVICE; resumption after the war. was taken over by Oantas·s newly acquired Constellations of operation. P.O. BOX 84, CANBERRA, A.CT. 2600, AUSTRALIA Airways "Centaurus" . arrived at Rose Bay in 1936. and the Tasman flying boat service to New Zealand was supplanted by DC-6s. And Please record one year's subscription (six issues) lo A viatio n Safety Yet within three years. aircraft design was to take a drfb11ic t~Y. ~ ifferent turn one by one. for a variety of reasons. most of them economic. the smaller local service Photographs hy courtesy of Peter Ricketts and NeviUe Parnell, Aviation H istorical Society Digest al $2.95 post paid. under the impetus of VVorld War II. FutuJe development was f \ol'f to~e ~ought by in- operators also began to go out of business. Finally only one service remained - the of Australia and Aorhnes of New South Wales. I enclose $2. 95 in payment D (Cheque or money o rder) Please debit my AGPS account 0 Name .. ___ . .. ... _ . - . · . · · · · · · · · S ignature . __ . ... .. ... _ . .. ... · ... · · · Address .. .. .. ..... .. ... ... · . · · · · · · · · · · . _.. ... ... •. ... (Please use block letters) q ate .. .... .. · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Remittances should be made payable to 'Collector of Public Moneys - Australian Government Publishing Service'. A few minutes after being released from an aero tow at Kingaroy, Queensland, and while apparently thermalling a short distance from the aerodrome, both wings of a Glasflugel Standard Libelle sailplane separated from the fuselage and the aircraft crashed. The pilot was killed. • SHEDS <WINGS IN GFLIGHT The Libelle belonged to a local soaring Meanwhile, on a hilltop lookout im Club and was being flown by an ex mediately to the west of the town, some perienced glider pilot. At the time of live km north of the aerodrome, a / the flight, south-eastern Queensland tourist was viewing the surrounding was under the influence of a cold front, area. Noticing several gliders in the air, and though conditions were generally he studied them for a time with his favourable for gliding, the turbulence binoculars. As he was watching one was moderate to severe. There was particular glider, which was apparently some cumulus cloud development in the flying quite normally, the wings area, with a base of some 4 OOO feet, suddenly separated from it, and the mainly to the west of the aerodrome. fuselage plumm§!ted straight down, dis ·The Libelle was towed aloft by the appearing behind some trees in the dis Aerial view of accident area showing wide scatter Club's Auster tug, and encountered tance. He heard a distinct 'bang' at the ing of wreckage. The direction of the aerodrome is moderate turbulence soon after they time the fuselage struck the ground. indicated. had become airborne. This increased in .Several gliding club members at the intensity as the two aircraft climbed launching point at the aerodrome a lso fuselage. W hen some of them hurried sheared, a llowing both wings to knots. Calculatio ns showed that at this towards the cloud on a westerly heard a report at about this time and, to the scene, they fo und the splintered separate from the fuselage. The out airspeed of 11 2.7 knots, a gust of heading. At a height of about 1 600 looking in the direction from which wreckage of the Libelle which had board overload failu re in the starboard about 2 1 metres per second would be feet, the combination flew into good lift the sound had come, they saw the been la unched only ten m inutes wi ng would have occurred almost required to cause a structural failure. and the glider pilot released the tow. separated wings of the glider fl uttering before, lying where it had fallen in a sim ultaneously. Despite a most careful As wit h a ll a ircraft struc tures Shortly afterwards, just before the tug earthwards. They did not see the ploughed paddock. T he pilot had been inspection of the failed components however, the greater the airspeed, the pilot returned towards the aerodrome killed instantly. T he failed wings of the however, no evidence could be found less the magnitude of the control input ·to land, he caught sight of the Li belle sailplane were later fou nd lying of any pre-existing defect in the struc or gust required to produce such a orbiting in a left turn in the vicinity of am ongst trees, 60 metres apart and ture. fa il ure. the cloud and apparently climbing. 500 metres south of where the fuselage had struck the ground. * * * * Certa inly at the time of the acci dent, with the area under the influence The evidence of the witness who was of frontal conditions and areas of * * * * watching the glider from the ground cu mulus c loud of large ver t ical T he nose and forward portion of the tended to preclude the possibility that development, a good deal of tur fuselage, as far back as the centre sec the structural failure had occurred bulence could be expected .