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Aviation History
1932
1932 - 0264.PDF
FLIGHT, MARCH 18, 1932 AIR MINISTRY NOTICES AIR MINISTRY NOTICES TO AIRMEN, SERIES A No. 4 of the year 1932. Dangerous Flying over the Zoological Park at Whipsnade, Herts. (164572/32.) In view of the fact that animals confined in the Zoological Park at Whipsnade, Herts, may, if unduly alarmed, charge and break down the fences of the paddocks, pilots having occasion to fly over the park should maintain a reasonably high altitude so as to reduce the possibility of disturbance to a minimum. In this connection, the attention of pilots is directed to Article 9 (2) of the Air Navigation (Consolidation) Order, 1923. February 24, 1932 No. 5 of the year 1932. (A) Flights Across the Strait of Dover : Arrangements for Reporting and Search. (47449/30.) (B) West London : Area of Restricted Flight. (16324/30.) (A) A signal of acknowledgment in the form of a white panel on a black background having been installed at Alprech semaphore station, Notice to Airmen, Series A, No. 6 of 1931, is amended as follows :— Para. 1 (&)— Sub-section (it)— Delete from the first sentence the words " (except, at present, at Alprech)." Delete the N.B. at the end of sub-section. Sub-section v)— Delete the following words which commence at the foot of page 2, " [except at present, at Alprech. See para. 1 (fc) (ii) as above]." Cancellation.—Notice to Airmen, Series A, No. 69/1931 is hereby cancelled. (B) Cancellation.—Notice to Airmen, General Notice No. 23/1930, is hereby cancelled. February 27, 1932 No. 6 of the vear 1932. Amendment of Annex D of the Convention relating to the Regulation of Aerial Navigation. (75228 30.) It has been decided by the International Commission for Air Navigation to modify Annex D of the international Air Convention including the Rules as to Lights and Signals and Rules for Air Traffic. The consequent modifi cations to the Air Navigation (Consolidation) Order, 1923, will be published in due course by means of an amendment to that Order. One of the modifications concerns the lights which shall be carried by a seaplane or flying boat under 45 m. in span and in length, moored or at anchor on the water. The revised lights are as follows :— " Forward centrally where it can best be seen a red light 1 m. vertically above a white light, both to be visible all round the horizon at a distance of at least 2 km." These modifications will come into operation on May 7, 1932. February 27, 1932 No. 7 Of the year 1932. Re-marking of Compass Syringing Bases. (159140 32.) The attention of proprietors of civil aerodromes is directed to the necessity for adjusting for change in variation, compass swinging bases which were laid down several years ago and have not since been corrected. Owing to the annual change in variation, which, in the case of England, is about 12' easterly,* bases which have not been adjusted since they were laid down 10 years ago will show a North Magnetic Point which is 2 deg. incorrect in position. All such bases should, therefore, be checked and, if necessary, re-marked to allow for the change in variation.' For future reference a clear indication should be made on the base to show the year in which the re-marking has taken place. Care should be taken in the future that checks are made from time to time as necessary to ensure that these bases are kept accurately marked in accordance with changes in variation. Owing to building developments e.g., the erection of new hangars or the extension of electrical services) the existing position of compass bases may be quite unsuitable and re-siting may, therefore, be necessary. In the case of all-metal aircraft, it is found necessary in a number of instances for the aircraft to be swung on 16 different headings, instead of the usual eight headings. In order to facilitate these operations, all bases should have the eight intermediate headings between the cardinal and quadrantal points marked in the appropriate positions (i.e., midway between N. and N.E., N.E. and E., etc.). These points should be marked on the ground in the usual way, but need not have letters or figures to indicate their magnetic directions. February 29, 1932 * I.e., decreasing.—ED. No. 8 of the year 1932. Landing of Aircraft on War Department Land. (156489/32.) It has been brought to the notice of the Air Ministry by the War Office that a pilot landed recently at the Central Ordnance Depot, Didcot, without having previously obtained permission. The attention of pilots is drawn to the fact that traffic in and out of War Department Establishments is subject to close surveillance and that aircraft must not land on War Department property without prior permission having been sought and obtained from the Under-Secretary of State, War Office, London, S.W.I. Applications should state the purpose of the flight. In this connection, attention is directed to Article 33 of the Air Navigation, (Consolidation) Order, 1923, which prescribes that " Nothing in this Order shall be construed as conferring any right to land in any place as against the owner of the land or other persons interested therein, or as prejudicing the rights or remedies of any person in respect of any injury to persons or property caused by an aircraft." February 29, 1932 No. 9 of the year 1932. Broadcasting of Weather Reports by the Automobile Association. (144825/31.) The Automobile Association broadcasts daily from the A.A. W/T Station, Heston Airport, by radio telephony on 833 m.. Air Ministry weather reports and forecasts at the times given below. The reports are from stations grouped along five routes and covering two areas, as follows :— Eastern Route to the North. Bedford, Cranwell, Harrogate, Newcastle. Western Route to the North. Oxford, Birmingham, Coventry.t Chester, Holyhead, Liverpool, Renfrew, Southport.T West Route. Ross-on-Wye, Pembroke. South-west Rmtte. Farnborough, Winchester, Southampton, Amesbury, Portland Bill. South-east Route. Croydon, Biggin Hill, Lympne, Dungeness. East Anglia. Felixstowe, Yarmouth. London Area. Heston, Stag Lane. Minor amendments and additions may be made to the stations mentioned above from time to time. The reports give the general state of the weather and the visibility at each station, followed by the amount and height of the base of low cloud and the direction and force of the wind, e.g. :— Winchester. 0700. Partly cloudy ; visibility three miles, 4/10 low cloud at 1,000 ft. Wind north-west, 5 m.p.h. The forecasts are divided into appropriate areas covering England, Scotland, Wales and Northern Ireland, and give the probable form, character and intensity of precipitation, the anticipated changes in visibility, the direction and speed of the wind at the surface and at 2,000 ft., and the extent and height of low cloud that may be expected ; e.g. :— Eastern and Central England and eastern half of Northern England.— No rain anticipated. Visibility, three miles generally, but 500 yards in places owing to local fog. Wind at surface : N.W. at 5 m.p.h. Wind at 2,000 ft. : 360 deg. at 15 m.p.h. Three-tenths to seven-tenths of low cloud at 1,200 ft. The messages are read through once at normal speed and then repeated more slowly. The hours of broadcasting are as follows :— 0845. 0700 hours observations along the five routes and in the two areas. 0930. Part I. Forecast for the period until noon. Part II. Repetition of the 0845 broadcast amended by any subse quent reports received. 1030. Recent observations along the S.E. route and from supplementary stations elsewhere. 1130. Selected observations taken since 1000 hours along the five routes and in the two areas, with supplementary reports when available. 1230. Forecast for a period until dusk. 1430. Observations taken since 1300 hours along the five routes and in the two areas. 1530. Repetition of the 1430 broadcast amended by any subsequent reports. 1630. Forecast for the following day. The Automobile Association announces that everything reasonably possible has been done to reduce the likelihood of errors to a minimum, but that the Association cannot accept responsibility for any inaccuracies which may occur. February 29, 1932 t Coventry and Southport are supplementary, only one report per day being broadcast. No. 10 of the year 1932, Oxford V.Cambridge Boat Race. (165302/32. The Oxford v. Cambridge Boat Race will be rowed on the River Thames between Putney and Mortlake on March 19, 1932. Pilots of aircraft are requested not to fly in the vicinity of the course at a lower altitude than 2,000 ft. either when the race is about to start, or during its progress. Aircraft engaged in flying in the vicinity of the course should carry out left- hand circuits until the conclusion of the race. March 11,1932 NOTICES TO GROUND ENGINEERS No. 4 of the year 1932. Aircraft Fitted with Rotary Engines : Provision of Fireproof Bulkheads. (153352/31.) With reference to Notices to Aircraft Owners and Ground Engineers Nos. 26 of the year 1929 and 19 of the year 1930, owners of aircraft with rotary engines who have not arranged for the modification of such aircraft by having a fireproof bulkhead fitted in accordance with the terms of Leaflet D.2 of the Airworthiness Handbook for Civil Aircraft, A.P. 1208, are further warned that the relaxation in regard to this requirement ceased to have effect after December 20, 1931, and that, consequently, certificates of airworthiness for such aircraft can no longer be renewed unless and until the modification in question has been carried out. Full information with regard to the suitability of any proposed bulkhead can be obtained on application to the Airworthiness Department, Royal Aircraft Establishment, South Farnborough, Hants. February 24, 1932 No. 5 of the year 1932. "Record " Electric Revolution Indicators : Maintenance Requirements. (15844332.) Wrhen the above-named type of instrument was approved for use on civil aircraft, it was anticipated that the generator commutators would not require periodic cleaning more frequently than once in every 100 flying hours. Certain early generators, the serial numbers of which are given below, were, however, fitted with silver commutators, the dust from which necessitates cleaning after every 50 hours' running. Steps are being taken to replace these silver commutators with others made from a special alloy, but until this modification has been completed, regular observations of the generators concerned should be made, in order to ensure that they are cleaned after every 50 hours' running, or even more frequently if any sign of erratic behaviour of the indicating instruments is recorded. The serial numbers of the generators fitted with silver commutators are as follows :— 1-63, 70-72, 74, 76-83, 97-100, 102, 123, 126, 127, 132, and 137. For the purpose of cleaning the commutators, the seal must be broken and the bakelite cap unscrewed. The actual cleaning out of the commutator slots is best done by means of a tooth-brush. This operation must be carried out with extreme care, owing to the very delicate nature of the brush gear and electrical connections, and should preferably be carried out in a workshop. February 27, 1932 No. '6 of the year 1932. Avro 504.N Aircraft with Lynx Mk. IV Engine : Air Intakes. (60361/30.) With reference to paragraph 2 of Notice to Aircraft Owners and Ground Engineers No. 7 of 1927, air intakes to the following drawings are acceptable:— O. 1258 introduced by Modification No. 504.N/8 (non-heated type). O. 1495 introduced by Modification No. S04.N/57 (heated type). Copies of the above drawings may be obtained from A. V. Roe & Co., Ltd., Newton Heath, Manchester. March 10, 1932 248
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