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Aviation History
1948
1948 - 2034.PDF
FLIGHT DECEMBER 2ND, 1948 Civil Aviation News direction and is flown with 22-seater Short Plymouth flyingboats, departures bein;v f rom Southampton and Tokyo onSaturdays. * * * During the war a few-Italian Piaggio P. 108 heavy bomberssaw service, and it is learned that the company are now modifying this military design for freight and passenger work.The prototype P.ro8T-2 is under construction at the Finale- Legure plant and it is to be powered by four Pratt and Whit-ney R-2000 engines. The passenger version is to accommodate up to 60 seats and the freight version is expected to have a •useful load of 31,000 lb. A cruising speed of 260 m.p.h. at 11,000ft is quoted, and, according to load, the range vanesbetween 700 and 2,100 miles. Cheap fares for children between the ages of 12 and iSat school in this country who visit their parents in countries outside Europe or vice versa) at the recognized annual holi-day periods were introduced by K.L.M. on November 22nd. The reduction, which will amount to half the adult returnfare, will operate on services to the Middle and Far East, North, Central and South Africa, North and South Americaand the West Indies. Return journeys may be made within a period of four months. R.Ae.C. MAINTENANCE SCHEDULES FOK LIGHT AIRCRAFT 'T^HE first of the Maintenance Schedules in the Royal Aero-*- Club's light aircraft servicing scheme, details of which were given in Flight, May 6th, and subsequently in Flight,May 20th, are reproduced below. As reported earlier, the purpose of the scheme is to avoid the necessity of having tomake an aircraft perfect once a year, when its C of A is re- newed, in order to ensure that it will be rafe at the end of a12 months' period even if the intervening maintenance may have been small. As will be seen, the accompanying schedulescomprise a monthly check, a six-monthly inspection with an overriding maximum of 120 hours), a 12-monthly inspectionand a three-yearly complete overhaul, now asscciated with the renewal of, the C of A, with an overriding maximum of 300hours. This first schedule applies to privately owned single- engine aircraft not exceeding a maximum total authorizedweight of 3,5001b. In order that private owners may receive the benefit of theGeneral Maintenance Schedules R.Ae.C./i and R.Ae.C/2 as early as possible, the Air Registration Board has agreed thatthe 12-monthly inspection to coincide with the renewal of the C of A may be applied as from June 1st, 1948 (a) in aircraftin respect of which the C of A was first issued on or after January 1st, 1948, and also (b) to any aircraft of which theC of A was last renewed on. or after March 1st, 1948. The owner of a private aircraft in respect of which a C of A wasissued prior to January 1st, 1948, or renewed prior to March 1st, 1948, will be able to apply the Maintenance Schedulesimmediately after the C of A is next renewed. MONTHLY INSPECTION Fuselage, Wings, Flaps and Tail Unit A.I. Inspect externally for:—(a) damage; (b) deterioration; (c)corrosion; (d) condition and tension of bracing wires; (e) condition of struts; (f) effectiveness of drain-holes.Landing Gear A.2. Check for freedom of movements. A.3. Check compression legs for correct filling, i.e., air, oil, etc.,as appropriate. A.4. Inspect for damage or corrosion.A.5. Lubricate as required. Controls (all essential services) A.6. Expose (so far as normally detachable panels will allow)and inspect for:—(a) correct functioning; (b) freedom from cor- rosion; (c) cleanliness and adequate lubrication. A.7. Check correct functioning of control surfaces and inspectfor cleanliness and adequate lubrication of hinge points. A.8. Inspect control surfaces for damage and for security ofattachment points. A.9. Check tension of control cables.Propeller A. 10. Check propeller for condition and security of attachment.Electrical A.11. Check battery for condition and system for functioning.Exhaust and Heater System A.12. Check for condition and security.Note.—When it is known that an aircraft will not fly during the month following the time at which a monthly inspection isdue, only items 1, 4, 8 and 9 need be attended to. If, however, the conditions of storage and the effectiveness of the protectivetreatment of the aircraft are satisfactory none of the items need be attended to, but in either case the whole of the items must beattended to the following month. SIX MONTHS' OR 120 HOURS' INSPECTION (Whichever Occurs First) Repeat Monthly Inspection.Fuselage, Wings and Tail Unit B.i. Remove such fairings as are necessary to inspect the wingroot and tail unit attachments for security and corrosion. B.2. Inspect internally (so far as normally detachable inspec-tion panels will allow) for:—(a) damage; (b) deterioration; (c) corrosion; (d) condition and tension of bracing wires; (e) con-dition of struts. Landing Gvar B.3. Remove wheels, inspect and lubricate bearings. • B.4. Inspect tyres externally. B.5. Inspect brakes and brake gear and rectify if necessary.B.6. Without dismantling, check components for wear and rec- tify if neces.sary.Controls B.7. Check control cables at guides and pulleys for wear' andrectify if necessary. Fuel and Oil Systems B.S. Without removal, inspect tanks for condition and security.B.9. Inspect pipe lines externally for condition and for security. . B.io. Inspect cocks for leakage.B.i 1. Check contents gauges for functioning. B.12. Remove drain plugs or open cocks on tanks to removewater, etc., and relock. 12 MONTHS' INSPECTION (To Coincide with Renewal of Certificate of Airworthiness) Repeat Monthly and Six-monthly inspections.Instruments C.i. Calibrate A.S.I, and altimeter, check other instruments ontest flight. .... Fuel and Oil SystemsC.2. At the discretion of A.R.B. surveyor pressure-test tanks and pipes.C.3. Calibrate fuel contents gauge. C.4. Check and record petrol flow.Fuselage, Wings and Tail Unit C.jj. At the discretion of' A.R.B. surveyor remove • sample boltsfor inspection. Controls C.6. Slip and inspect control cables, except that cables whichdo not pass over fairleads or pulleys need not be slipped. C.7. At the discretion of A.R.B. surveyor remove sample attach-ment pins or bolts for inspection. Landing GearC.8. At the discretion of A.K.B. surveyor remove tyres for in- ternal inspection. C.9. At the discretion of A.R-.B. surveyor remove sample boltsfor inspection. GeneralC.io. At the discretion of A.R.B. surveyor re-weigh aircraft. 500-HOUR OR 3-YEAR INSPECTION (Now associated with C. of A. renewal) Note.—If 500 hours is up in between C. of A. period it wouldbe economical for the C. of A. to be renewed. Repeat Monthly, Six-monthly and Twelve-monthly inspections.Fuselage, Wings, Tail Unit, Ailerons, Flaps, etc. (except built-in units).D.I. Remove wings and tail plane and the fin at the discretion of A.R.B. surveyor.D.2. Open up and inspect entire structure. D.3. Remove and inspect fittings, bolts and pins, etc., wherecorrosion, wear or damage is suspected. D.4. Make good such defects as are disclosed as a result of theabove inspections. Landing GearD.5. Completely dismantle, overhaul, refit. ControlsD.6. Completely dismantle, clean, overhaul and refit. D.7. Renew or make good any defects as a result of this in-spection. General D.8. At discretion of A.R.B. surveyor proof-load safety beltsand harness. ^ The engine, variable pitch airscrew (if fitted), accessoriesand blind flying instruments are to be overhauled at the periods approved by the A.R.B. in respect of the particular type ofcomponent. For engines the General Maintenance Schedule R.Ae.C/2 comprises five inspections, namely, before flight,after ten flying hours, minor, intermediate and major inspec- tions. The schedule enumerates each item to be checked atthe various inspections, and various types of engines are listed by the R.Ae.C, together with the item numbers of the inspec-tion schedule applicable to each particular engine.
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