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Aviation History
1928
1928 - 0086.PDF
FEBRUARY 2, 1928 NOTICES TO AIRMEN Recognised Points of Reference for Positions given by the DirectionFinding Service IN future the position of an aircraft flying along a recognised air routein Great Britain, France, Belgium, Holland, Switzerland, Germany and Czechoslovakia, as obtained by D/F means and passed to the pilot by theappropriate D/F control station, will invariably be given with respect to the most convenient of a number of agreed points of reference which have beenchosen for the route in question. A list of the towns, aerodromes, &c, which will be employed as points ofreference for British sectors of the Continental air routes is given below, and similar lists, giving the points of reference which will be employed forsectors of recognised air routes in the above-mentioned foreign countries will be published in the near future. It will therefore be necessary that these towns, aerodromes, &c., employedas points of reference should be clearly marked on aircraft route maps, in order that the D/F service may be of the greatest use to pilots. Towns, Aerodromes, &c. Latitude LongitudeEpping , .. 51°42'N 0°06'E. Enfield S1°39'N. 0°05'W.Billertwy ,. .. .. ., 51°37'fi. 0°25'E. Romford 51*3<t"N, Q'U'E.,Southenci 51°32'N. 0°43'E. Harrow 51°34'N. 0°20'W. Charing Cross 51°30'N. 0°08'W.Woolwich 51°29'N. 0°05'F.. Ealing Sl"30'N. 0°19'W.Sheerness (prohibited area).. .. 51°26'N. 0°45'E. Dartford 51°26'N. 0°13'E.Gravesend 51°26'N. 0°22'E. Kingston-on-Thames .. .. 51°25'N. 0°18'WBrooklands aerodrome .. .. 51°21'N. 0°28'W. Epsom 51°20'N. 0°16'W.Croydon aerodrome 51°21'N. 0°07'W. Bromley 51°24'N. 0°02'E. Wrotham S1°18'N. 0°19'E.Chatham (prohibited area) .. .. 51°22'N. 0°32'E. Sittingbourne 51°20'N. 0°45'E.Faversham .. .. .. .. 51°18'N. 0°53'E. Herne Bay 51°22'N. l°08'E.Margate 51°23'N. 1°24'E. Guildford 51°14'N. 0°34'W.Dorking 51°13'N. 0°20'W. Penshurst landing ground .. .. 51°12'N. O'll'E.Redhill 51°14'N. 0°10'W. Westerham -S1°16'N. 0°04'E. Sevenoaks S1°17'N. O°11'E.Maidstone 51°16'N. 0°32'E. Lenham 51O14'N. 0°43'E.Canterbury 51°16'N. 1°()5'E. Deal O13'N. 1°24'E.Crawley 51°06'N. O°H'W. East Grinstead 5I"07'N. 0°01'W.Edenbridge , .. 51°11'N. 0°04'E. Tonbridge 51°11'N. 0°16'E.Tunbrige Wells 51°08'N. 0°16'E. Marden landing ground .. .. 51°10'N. 0°31 'E.Cranbrook 51°05'N. 0°32'E. Headcorn 51°10'N. 0°38'E.Ashford 51o08'N. 0°53'E. Lympne aerodrome .. .. .. 51°05'N. l°01'E.Dover.. .. .. .. .. 51°07'N. 1°19'E. Folkestone 5l°05'N. 1°11'E.Horsham 51°04'N. 0°19'W. Haywards Heath 51°00'N. 0°06'W.Crowborough 51°03'N. 0°10'E. Robertsbridge 50°59'N. 0°29'E.Tenterden .. .. .. .. 51°04'N. 0°42'E. Littlestone landing ground .. .. 51°01'N. 0°59'E.Petworth .. .. .. .. 50°59'N. 0°36'W. Uckfield 50'58'N. 0°06'E.Heathfield . . . . . . . . 5il°58'N. 0°17'E. Lewes 5O°52'N. 0°00'Hailsham 50°51'N. 0°16'E. Hastings 50°51'N. 0°35'ERye 5O°57'N. 0°44'E Dungeness 50°54'N. 0°58'E'Vame Lightship 50°56'N. 1°17'E. Eastbourne 50"46'N. 0°17'E. (No. 1 of 1928) W/T Route Traffic Messages Classification of Messages and Allocation of Priority Pre;ixes1J Route traffic messages will be divided into three categories, as below :— (a) Messages concerned with the safety of life and the safe conduct of theair routes, upon receipt of which immediate action is imperative : these messages will be given the prefix " P," and their transmission accordedpriority over that of all other messages. (*) Messages of security and regularity, as, for example, arrival and depar-ture reports : these messages will be given the prefix " D," and their trans- mission accorded priority over that of non-urgent messages.(c) Ordinary messages, as, for example, code messages for the reservation of seats, which will be given no priority prefix, and accorded no priority intransmission. The deciding authority for the granting of priority prefixes to route trafficmessages will be the C.A.T.O. i/cof the aerodrome. Code for Through Bookings of Seats in Aircraft2. The following additions have been made to the list of code letters for towns given in the Revised Appendix to the Air Pilot of Great Britain— Town. Code Letters. Briinn (Brno) BU•- Graz GR Halle -Leipzig (Schkeuditz) HZMadrid MD Rome ROVenice .. .. .. .. .. .. .. VD Saint-Gall SG 3. Amendments to the appropriate sections of the Revised Appendix to theAir Pilot will be made in due course. (No. 2 of 1928.) Wittering Aerodrome Regulations PILOTS are warned that the northern portion of Wittering aerodrome isinvisible from the vicinity of the station buildings, owing to the existence of a ridge of high ground which runs in a direction approximately E.S.E.-W.N.W.,and is situated about 200 yards from the station buildings. ' This ridge intro- duces a risk of collision between aircraft taking off from S. of the ridge andaircraft on the ground beyond it. When it is necessary to take off in a northerly direction, pilots must taxiup to the ridge and ascertain whether the ground beyond is clear, before taking off. During northerly winds, pilots should avoid landing on the northern portionof the aerodrome. If, however, they are compelled to do so, they must not taxi directly towards the station buildings, but should make a wide detourtowards the E. boundary and thus clear the area from Which aircraft normally take oft.(No. 4 of 1928.) Private Pilot's Licence 1. As some doubt appears to exist as to the circumstances in which aperson who is not the holder of a pilot's licence may, under existing regulations, pilot a civil aircraft, it is pointed out that, unless a candidate is undergoingofficial tests for the purpose of obtaining a licence, the exemption from the holding of a pilot's licence applies only to a person who either (i) is under instruction i Or (11) IS flying for the purpose of becomingeligible for the issue of such a licence. 2. This exemption applies only within three miles of a licensed aerodrome,a Royal Air Force aerodrome, or an aerodrome under the control of the Secretary of State, and in cases falling under (ii), the conditions laid down inparagraph 82 of the Air Navigation Directions, 1926 (A.N.D. 6), have to be complied with. 3. It is also pointed out that the Royal Aero Club certificate is not theequivalent of a Class " A " pilot's licence, though it may be accepted as part of the qualification for the issue of such a licence. 4. Attention is called to the following regulations :—proviso (b) to Article 3 (1) and proviso (c) to Article 4 (1) of the Air Navigation (Consolidation) Order, 1923, as amended ; andparagraph 82 of the Air Navigation Directions, 1926 (A.N.D. 6). Copies of the above-mentioned Order (as amended) and Directions may beobtained through any bookseller or direct from His Majesty's Stationery Office, Adastral House, Kingsway, W.C.2, price Is. Id. and 6rf., respectively.(No. 5 of 1928.) PUBLICATIONS RECEIVED This Airship Business ! By E. F. Spanner. Williams and Norgate, Ltd., 14, Henrietta Street, Co vent Garden, London, W.C.2. Price 25s. net. Pocket. Diary for 1928. B. B. Moss and Co., Incorporated Insurance Brokers, Park Chambers, Sankey Street, Warring- ton. The Gloster. Christmas, Number, 1927. The Gloster Air- craft Co., Ltd., Sunningend Works, Cheltenham. Weights and Gauges of Non-Ferrous Sheets, Rods, Wire and Tubes. Charles Clifford and Son, Ltd., Fazeley Street Mills, Birmingham. M M W W AERONAUTICAL PATENT SPECIFICATIONS (Abbreviations : Cyl. = cylinder; i.e. = internal combustion ; m. = motor. The numbers in brackets are those under which the Specifications willbe printed and abridged, etc.) APPLIED FOR IN 1926 Published February 2, 192826,100. M. A. MAZADE. Stabilizing-apparatus for aircraft, etc. (260,260.) 32,313. J. WINTER. Propellers. (283,329.)32,892. W. G. MACOMBER. Revolving cylinder engine. (283,336.) APPLIED -FOR IN 1927 Published February 2, 19289,534. H. JUNKERS. Fuel pumps and i.e. engines. (278,656.) 9,740. DORNIER-METAI.LBAUTEN GES. and Dr. C. DORNIER. Truss having a plurality of struts for the wings of aeroplanes. (272,456.) 18,059. Soc. ANON. BELGE DE CONSTRUCTIONS AERONAUTIQUES and R. DE GLYMES. Construction of aircraft. (274,092.)18,141. J. HAW. Propeller. (283,423.) 18,409. ROHRBACH METALL-FJ.UGZEUGBAU GES. Monoplane flying-boats.(274,463.) 22,164. J. BOWEN. Means for air-cooling cylinders of i.e. engines. (283,436. FLIGHT, The Aircraft Engineer and Airships 36, GREAT QUEEN STREET, KINGSWAY, W.C.2. Telephone : Gerrard 1828. Telegraphic address : Truditur, Westcent, London. "FLIGHT" SUBSCRIPTION RATES. UNITED KINGDOM ABROAD*s. d. 3 Months, Post Free.. 7 7 6 15 2 12 „ „ ..30 4 • Foreign subscriptions must be remitted in British currency.Cheques and Post Office Orders should be made payable to the Proprietors of " FLIGHT," 36, Great Queen Street, Kingsway, W.C.2, and crossed Westminster Bank. Should any difficulty be experienced in procuring " FLIGHT " from local newsvendors, intending readers can obtain each issue direct from the Publishing Office, by forwarding remittance as above. 3 Months, Post Free 6 12 5.. 8 .16 .33 d. 3 6 0 74
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