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Aviation History
1930
UNTITLED0 - 0953.PDF
FLIGHT, AUGUST 8, 193QT AIR MINISTRY NOTICES AfR MINISTRY NOTICE TO AIRCRAFT OWNERS AND GROUND ENGINEERS\. Discontinuous Elevators. B. Covering of Wooden Airscrews. C. Fireproof Bulkheads. D. Protection of Dual Controls lira: attention of all aircraft owners and ground engineers is drawn to the fact that the following requirements of Air Publication 1208 will be brought into effect in respect of all applications for Certificates of Airworthi- ness as follows :— (i) In respect of all applications for type Certificates of Airworthiness as given at (a). (ii) In respect of all applications for subsequent Certificates of Air- worthiness as given at (6). A. Discontinuous Elevators ]. The requirement of the additional sub-paragraph of paragraph I, of Design Leaflet B.4 is as follows :—" Discontinuous Elevators.—The use of elevators in the same plane divided into separate sections which are not positively and rigidly coupled together is prohibited on aircraft in the acro- batic category." 2 The above requirement will be brought into effect as follows :— (a) As from July 17, 1930. (b) and (c) As from October 17, 1930. B. Covering of Wooden Airscrews 1. The requirement of paragraph VI of Design Leaflet B.8 is as follows :— " Covering.—The surface of wooden airscrews must be protected by varnish, varnished fabric, cellulose lacquer, or any other approved protective." 2 The above requirement will be brought into effect as follows :—(a), (fc) and [c) As from July 17, 1930. C. Fireproof Bulkheads1. The requirement of sub-paragraph (i) paragraph I of Design Leaflet G.I is as follows :—" (i) A fireproof bulkhead possessing at least equivalentire-resisting qualities to the following must be fitted in order to insulate the engine bay from the rest of the aircraft :—A sandwich consisting of bestquality asbestos millboard of a minimum thickness of 3/32 in., held between aluminium or duralumin sheets, 24 S.W.G. thick, securely riveted together.In addition, adequate protection must be provided for the underside of the fuselage." 2. The above requirement will be brought into effect as follows :—(a) Asfrom July 17, 1930. (6) and (c) As from October 17, 1930. 3. N.B.—The special concessions regarding the fitting of fireproof bulk-heads to aircraft with rotary engines, granted by Notice to Aircraft Owners and Ground Engineers No. 26 of 1929, still remain in force. D. Protection of Dual Controls1. The requirement of sub-paragraph (ii) of paragraph I of Design Leaflet B.6 is as follows :—" (ii) Adequate provision must be made to prevent thelikelihood of the passenger(s) interfering with any of the controls of dual control aircraft when being used for other than training purposes." 2. The above requirement will be brought into effect as follows :—(a) Asfrom October, 17, 1930. (fc) and (c) As from January 17, 1931. (Wo. 24 o/ 1930.) Ground Engineers Licensed in Categories "A" and "C":Distinction between Duties 1. THE Air Navigation Directions, 1928 (A.N.D. 7) stipulate that thecertification of an aircraft, in accordance with paragraph 8 of Schedule II of the Air Navigation Order, shall be made, in respect of the aircraft itselfby a ground engineer licensed in category " A," and in respect of the engines and engine installations, by a ground engineer licensed in category " C." 2. When a certificate of safety for flight for any aircraft in respect of both.aircraft and engine(s) is given by one ground engineer licensed in both " A " and " C " categories no question arises in respect of the responsibility incidentto one or other of the duties concerned. The question of the limits of respon - sibility does arise, however, when the certification is made by two separateindividuals licensed in the separate categories. 3. In order that there shall be no doubt regarding the distinction betweenthese duties, the following instructions are promulgated :— (a) The inspection to be performed by the ground engineer licensed incategory " A " includes :— (i) the whole of the aircraft structure (including fuselage or hull,wings, ailerons, slots, tail-plane, elevators, fins, rudder, undercarriage, struts, bracings, and airscrew) for condition and correct assembly:(ii) all flying"controls for assembly and correct functioning; (iii) the flying instruments (aneroid, airspeed indicator, turn indicatorand compass, where applicable) for installation and correct functioning ; (iv) aircraft equipment (safety belts and electrical services with,their batteries, wiring and bonding for W/T) for correct installation. (6) The inspection to be performed by the ground engineer licensed iscategory " C " includes :— (i) the whole of the engine installations, including the engine with itsaccessories and the fuel, oil, cooling, ignition and exhaust systems for condition, installation, correct functioning, and power output;(ii) all controls connected with the engine and its ancillary systems for assembly and correct functioning; (iii) the instruments relating to the engine and its installation (revolu-tion indicator, pressure and contents gauges, and temperature indicator)' for installation and correct functioning; (iv) the airscrew for correct attachment and smoothness of running. (No. 25 of 1930.) AIR MINISTRY NOTICE TO AIRMEN FUght on Croydon-Lympne Air Route in Conditions of Bad Visibility1. THE attention of all pilots is drawn to Section 12 of " The Air Pilot," Vol. I, and to the additional rule defined below :— When the specified conditions of bad visibility prevail on the Croydon—Lympne air route, pilots of aircraft not equipped with radio shall, before taking-off to fly over any portion of that route, request theofficial in charge of the aerodrome of departure to advise by telephone either the chief aerodrome officer, Croydon air port, or the aerodrome-officer in charge, Lympne air port, of the particular alternative route [i.e., one of the three routes given in (i), (ii), or (iii) of Section 12 (1)of " The Air Pilot," Vol. I] which he intends to follow. The official in charge of the aerodrome of departure should ensure that suchinformation, together with the time of departure of the aircraft, is telephoned to Croydon or Lympne, as the case may be, immediatelythe aircraft has left. 2. " The Air Pilot," Vol. I, Section 12, is affected and will be amended indue course. (No. 20 of 1930.) IN PARLIAMENT Schneider Trophy RaceMR. MONTAGUE, on July 16, in reply to Mr. Horrabin, said, I under- stand that only one entry, from Italy, has been received by the Royal AeroClub, the body responsible for dealing with entries for the Schneider Trophy Contest, and that for reasons which it has already announced in the Pressthe Royal Aero Club has been unable to accept the entry as complying with the prescribed conditions. As to whether my Department will give considera-tion to the advisability of abolishing the conditions attached to the loan of the Supermarine S.6 and Gloucester-Napier seaplanes, no application forthe loan of aircraft has yet been received by the Air Ministry, and the Minister for Air is not prepared to consider whether it would be possible to vary inany respect the conditions already announced until some definite proposals are before him. Mr. Hardie : Does my hon. Friend think there is any value at all in thisrace ? . Mr. Montague : I certainly think so, and I think the value has been provedW the past. Meet Air Arm MR. AMMON, on July 17, in reply to Capt. Bullock, said the present"amber of aircraft attached to the British Fleet air arm is 141. The numbers attached to the Fleet air arm of the United States and Japan are not accuratelyknown, and therefore cannot be given. Bombing Ranges MAJOR GLYN, on July 30, asked the Under-Secretary of State for Air ifae will be willing to arrange for a conference on the ground, tentatively Elected, on the Downs of North Berkshire as a practice bombing area inorder that officers of the Royal Air Force and officials of the Air Ministry may meet representatives of the trainers and owners of race horses andJther persons engaged in the care and provision of forage for these race norses whose training quarters will have to be moved from the district if'his project is persisted in, thus causing unemployment and disturbing what is | prosperous local industry ? wiBsdier-General Clifton Brown asked whether sanction has been givenj° the proposal to utilise for bombing practice a stretch of the downs near ^amboarn of great beauty, bearing in its midst and on its margin historical Ai£ Navigation Licences ' ~- IHI. following candidates were successful at the examina-tion i\,r Air Navigation Licences, Second Class, held at the Ajr Ministry, on July 7 8 and 9, 1930 :—Mr. R. A. C. Brie. •"gut-Lieut. M. H. Findlay, Mr. T. W. Morton, Mr. B. B.Wuckkston, Flying-Officer G. J. Powell, Flight-Lieut. A. R, ^endergast, Mr. F. H. Robinson, Mr. L. H. Stace, Mr. H. G.havers. Mr. V. G. Wilson. monuments of exceptional interest; and, in view of the protests made bycounty councils and other authoritative local bodies, will he reconsider the matter ?Mr. Ede asked whether, in view of the public protests by the Berkshire Joint Regional Planning Committee against the proposed formation of abombing praotice ground at Lambourn, it is intended to proceed with the scheme ? Mr. Montague : Yes, the Air Ministry is prepared to send representativesto a meeting as suggested by the hon. and gallant Member. I would like to point out, however, in view of the widespread misconception which seemsto prevail, that all that has happened to date is that a preliminary and provisional reconnaissance has been made of this, as of other areas, andthat in any event the proposal is one for the use, not of live, but of practice bombs, which merely make a puff of smoke and can be heard only a veryshort distance. The small effect of these practice bombs, which would do no damage to a person standing five yards from where they fall, and onlymake an indentation in the ground some three inches in diameter, could be demonstrated at this meeting. I can give an assurance that the Governmentwill not use compulsory powers to acquire the land, against the wishes of everybody in the district, until Parliament again meets. Major Glyn asked the Under-Secretary of State for Air how many areasthere are in Great Britain reserved for the use of the Royal Air Force for practice in bomb dropping with live bombs of all kinds ; what is the dangerzone of these targets ; whether they are used throughout the year; if not so used, in what months is the training of pilots in bomb dropping usuallycarried out; and whether it is necessary to find land removed from the ordinary military training areas ? Mr. Montague, further in answer to Major Glyn, said there are in GreatBritain five bombing ranges, where high explosive bombs are dropped. Prao- tice bombs, that is, bombs which only emit smoke, are dropped also at theseranges, and there are, in addition, four ranges at which only practice bombs are dropped. The danger area varies with the height at which practice iscarried out and the type of bomb used. Most of the ranges are used through- out the year, but practice is mainly carried out during the summer monthsNo bombing takes place at week-ends or on public holidays. Land in military training areas would be used if it were suitable and available within the areain which a bombing range is required. <3> <3> • . , ••• _;•••••-:-: ..:;,v;;.r--v ..• Schneider Trophy Contest THE Royal Aero Club, in reply to inquiries, announces that it has returned only entries that have not conformed to the unalterable conditions governing the Schneider Trophy Contest, 1931, issued by the F.A.I, in January, 1930. There is no foundation, it adds, for any suggestion that the Royal Aero Club declines to organise the Contest for 1931. 905
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