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Aviation History
1931
1931 - 1330.PDF
FLIGHT, DECEMBER 18, 1931 AIR MINISTRY NOTICES AIR MINISTRY NOTICES TO AIRMEN, SERIES A No. 64 of the year 1931. Pilots' Log Books : Method of Recording Flights when Two Pilots are Employed. (912678/29) Whenever two pilots divide the duty of piloting an aircraft during a flight, the full time of the flight should be entered in both pilots' log books (C.A. Form 24) and against each entry a note should be inserted in the " Remarks " column to indicate the time that the pilot to whom the log book belongs was actually engaged in piloting the aircraft. November 23, 1931. No. 66 of the year 1931. Civil Air Maps of Great Britain. (870838/28) The following is a complete list of the civil air maps of Great Britain at present published :— (i) The Ordnance Survey 10-Mile Map of Great Britain (Special Air Edition) in three sheets, price 5s. (paper flat) and 6s. (linen-backed folded) per sheet. This map, printed in colours, is produced on a scale of 1 in. to 10 statute miles (1 : 633,600). Topographical relief is shown by layers in brown, with contour lines. The positions of aerodromes, lauding grounds, seaplane stations, airship stations, air navigation lights, prohibited areas and danger areas, are shown in red or blue. The approximate areas covered by the sheets are :— Shed 1.—That portion of Scotland lying N. of lat. 55° 40' N. Sheet 2.—S. Scotland, N. England, Midlands and N. Wales, between lat. 56° 30' N. and lat. 52° 45' N. Sheet 3.—Wales, Midlands and S. England, S. of lat. 53° 37' N. (ii) The J-tn. Ordnance Survey Map of England and Wales (Civil Air Edition) in 12 sheets, price 2s. 6d. (paperflat) and 3s. 6d. (linen-backed folded) per sheet. This map, printed in colours, is produced on a scale of J-in, to one statute mile (1 : 253,440). Topographical relief is shown by layers in brown, with contour lines at 200 ft. vertical intervals. The positions of aerodromes, landing grounds, seaplane stations, airship stations, air navigation lights, official aur routes, prominent landmarks, ground signs, D/F stations, prohi- bited areas, danger areas, high W/T masts, etc., are shown in red. (iii) The i-in. Ordnance Survey Map of Scotland (Civil Air Edition) in 10 sheets, price 2s. 6d. (paperflat) and 3s. 6d. (linen-backed folded) per sheet. This map is similar in character to the map of England and Wales described at (ii) above. Sheet 1, which covers the Border district, is identical with Sheet 1 of the England and Wales series. November 24, 1931. No. 66 of the year 1931. Class " B " Pilots' Licences : Night Flying Teat. (112837/31) As from January 1, 1932, until further notice, the night-flying test referred to in paragraph 94 (1) (/) of the Air Navigation Directions, 1930 (A.N.D. 10), will be made from Croydon to Lyinpne or from Lympne to Croydon, instead of from Croydon to Penshurst as at present. All normal lighting equipment on the airway between Croydon and the coast will be put into operation for these nights. In addition, paraffin flares in T formation will be lit at Penshurst and Marden landing grounds in order that landings can be made at those places in emergency. November 26, 1931. No. 68 of 1931. Examination for Civil Air Navigators' Licences. (141391/31) AN examination for 1st Class and 2nd Class Air Navigators' Licences will be held in London on Monday, Tuesday, Wednesday and Thursday, March 14, 15, 16 and 17, 1932. London. Heliopolis (The Office of the British Civil Aviation Directorate Representa- tive in Egypt, Heliopolis Aerodrome). Baghdad. (Hinaidi aerodrome.) Application forms, the syllabi and conditions of examination may be obtained on application to the Secretary, Air Ministry (C.A.2), Gwydyr House, Whitehall, London, S.W.I, or to the British Civil Aviation Directorate Representative in Egypt, Heliopolis Aerodrome, Heliopolis, Egypt, or the Air Oificer Commanding, Royal Air Force, Air Headquarters, Hinaidi, Iraq. Formal applications for permission to attend these examinations must be made on form C.A.2.C., and together with the prescribed fees must have been received at the appropriate address not later than Monday, February 15, 1932. In no sir uuistunces can late applicaii )ns be considered. Before a licence can be issued, candidates must pass the prescribed medical examination, for which special arrangements will be made where necessary. Copies of the papers set at previous examinations for 2nd Class Air Navi- gators' Licences may be obtained from His Majesty's Stationery Office, Adastral House, Kingsway, London, W.C.2, as follow :— Papers set at the six examinations held in October, 1930, July, 1930, March, 1930, October, 1929, December, 1928, and April, 1928, bound in one volume, price 2s. net, or post free price 2s. id. net. Papers set at the examination held in March-April, 1931, price 6d. net, or post free Sd. net. Papers set at the examination held in October, 1931, will be placed on sale shortly, price 6d. net, or post free 8d. net. Copies of the papers set at previous examinations for 1st Class Air Navi- gators' Licences may be obtained free of charge on application to the Secretary, Air Ministry (C.A.4), Gwydyr House, Whitehall, London, S.W.I. A further examination for 2nd Class Air Navigators' Licences will be held at or about the beginning of October, 1932. DecemOer 7, 19.il. No. 69 of 1931. Flights Across the Strait of Dover : Arrangements for Reporting and Search. (17449/30.) (Special) WITH reference to N/A, Series A, No. 6 of 1931, pending the installation of the signalling panel at Alprech, a lamp is available for the acknowledgment of circuits made by aircraft. The signal of acknowledgment will be the flashing of a white light from a position to S. of the semaphore station. December 8, 1931. AIR MINISTRY NOTICES TO GROUND ENGINEERS No. 72 of the year 1931. Examination of Applicants for Ground Engineers' Licences or Extensions to the Scope of Existing Licences. (33611/30) Examination boards will sit for the purpose of examining applicants for ground engineers' licences at the following times and places :— (a) London, on the first, second, third, and fourth Wednesdays in every mouth. (b) Croydon, on the second and fourth Fridays in every month. (c) Manchester, on the first Wednesday in January, March, and May. (d) Bristol, on the first Wednesday in February. April, and June. Applications for licences should be made on the appropriate form, which is obtainable on request, and should be addressed to The Secretary, Air Ministry (C.A.2), Adastral House, Kingsway, London, W.C.2. Applications for extensions to existing licences will also be dealt with at these boards, and such applications should be sent by letter to the address given above, giving particulars of recent experience in respect of the extension required together .•..-;•'•;:• -:r-:.r 7:;- . - • 1252 with the fee of 5s., and stating the centre at which the applicant wishes to sit. Applications for examination at the centres named at (1) (c) and (d) above can only be accepted provided that the application is received 14 days before the dates specified and provided also that the total number of applications received is within the capacity of the board. Applicants whose applications are not accepted owing to these provisions will be given the opportunity either for early examination at London or Croydon or, alternatively, to be placed on a waiting list for the next board to be arranged in the particular place concerned. November 21, 1931. No. 73 of the year 1931. Avro " Avian ": All Types. (60361/30) The forward movement of the control sticks is limited by the operating lever on the elevator striking the rearmost cross tube of the fuselage at the stern-post in the case of metal " Avians." On wooden Avians with the rear stick removed, the bottom edge of the elevator spar forms the stop. A modification incorporating a check cable attached to the fuselage frame and the elevator rocking lever has, accordingly, been introduced in order to provide a definite stop to the control sticks. Copies of these " Avian" Modifications, No. 103 (Metal Fuselage) and No. 104 (Wooden Fuselage), may be obtained from Messrs. A. V. Roe and Co., Ltd., Newton Heath, Manchester. The certificate of airworthiness of an aircraft affected by this modification shall be liable to suspension or cancellation if the above modification has not been incorporated within six months from the date of this notice. Certificates of airworthiness will not be renewed, and ground engineers must not sign daily certificates for such aircraft after the expiration of the afore- mentioned period unless the modification has been correctly embodied. November 24, 1931. No. 74 of the year 1931. Wing-Tip Flares on Civil Aircraft. (60361/30) It is hereby notified that:— The fitting of wing-tip flares to civil aircraft for which a certificate of airworthiness has been granted or is required, constitutes a modification, in respect of which the usual application must be made to the Secretary (C.A.2), Air Ministry, Adastral House, Kingsway, W.C.2, and full particulars of the proposed installation must be forwarded to the Airworthiness Department, Royal Aircraft Establishment, Farnborough, in accordance with paragraphs 33 and 34 of A.N.D. 10. Particulars of all existing installations of wing-tip flares are to be submitted to the Airworthiness Department, R.A.E., forthwith, giving details of the following items :— (a) Type of flare bracket. (b) Method of attachment of bracket to plane. (c) 1 ype and size of cables. (d) Type of press button. (e) Type of master switch. The certificate of airworthiness of any aircraft affected shall be liable to- suspension or cancellation if approval of such wing-tip flare installations has not been obtained within three months from the date of this notice. Certi- ficates of airworthiness will not be renewed or new certificates of airworthiness, granted for aircraft fitted with wing-tip flares unless and until the installation of such equipment has been approved. November 26, 1931. No. 75 of the year 1931. " Gipsy I " Engines : Replacement of Connecting Rods. (146466/31) " Gipsy 1 " engines prior to No. 1007 were originally fitted with connecting, rods (Part No. 800-10) having two holes drilled in the underside of the small end which converge into one hole where they enter the gudgeon-pin bore. It has been found by experience that cracks are liable to develop at the point where these holes meet, and as a consequence the maximum safe life of these rods has been fixed at 600 hr. In rods of later manufacture the holes in question are approximately 11 mm. apart where they enter the gudgeon-pin bore. Early-type rods should normally be replaced by those of later manufacture referred to in paragraph (3) on the occasion of the first complete overhaul. In the case of engines which have already been overhauled the rods should be replaced on the completion of 600 hours' running, or alternatively, where evidence of the time run is not available, they should be replaced within two- years of the date of the engine being put into service. Rods which have already completed 600 hours' running, or have been in service for more than two years, as the case may be, should be replaced immediately. Certificates of airworthiness will not be issued or renewed in respect of aircraft fitted with engines not complying with these requirements. November 28, 1931. No. 76 of the year 1931. Jaguar Engines. A.V.T. 70, 70 E and 70 G Carburettors : Needle Valve and Float, St eking of. (123150 31; Attention is drawn to Jaguar Modification No. 478 covering an alteration to the needle valve seating and the addition of a bracket to the float lever of the A.V.T. type carburettors fitted to Jaguar engines. The changes have been effected in order to minimize the risk of the needle valve sticking in the closed position. 'lhe bracket, Part No. C.H. 13695, is bifurcated to fit over the neck, or smallest diameter, of the needle valve, and is attached to the upper face of the float lever by a 4 B.A. screw, A.G.S. 246, locked by lightly riveting over the projecting end of the threaded portion. 1 o accommodate the bracket, the needle valve seating must be shortened at the guide end by 9 m.m., the circlip, Part No. C.H. 13666, being rendered redundant. Care must be taken to ensure that:— (a) Burrs are removed. (6) The seating is not distorted during the work of modification and assembly.i c) The seating is properly locked into the body. d) The clearance between'the guide portion of the seating and the needle valve, permits a narrow 0-U015-in. feeler to be insertec. It is necessary to turn the carburettor upside down when engaging tfe modified float lever with the needle valve. When re-assembling the float chamber, a cheek must be made to ensure that there is at least -in. clearance between the float chamber and the sides of the float at all positions in the swing of the float. Where the clear- ance is insuiheient, minor irregularities in the casting should be remove! and or the transverse position of the float adjusted by means of a thin brass washer fitted to the fulcrum pin. The alteration and addition required by this Notice must be effected a' the next overhaul. All future issues of carburettors supplied With engines, or as spares, will have the modification incorporated. The engine log book should be endorsed to show :— (a) That the modification has been incorporated. [b] That the checking required by parargaph (4) of this Notice nas. been carried out. . (December 9, 1931.)
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