by F.R.Donaldson, LAA Chief Engineer, for RANS S4 / S5, B & C Wing.(mike's extracts Dec.2010)
UK Agent in Lincs contact sales@sky-craft.co.uk
Rans tailwheel S4 and nosewheel S5 high wing single seat microlights powered in the UK by a Rotax 447 were kit built in the UK in the late 1980s/early 1990s of bolted and riveted aluminium tube & covered by Dacron envelopes. Optional is an additional overhead fuel tank. Maximum Weight Authorised. Empty 398 Lb, Total 587 Lb. CG Range B wing 58.5" to 62" aft of rear face of prop. Maximum permitted I.A.S. 80 mph, flaps extended 50 mph. and only non-aerobatic operation. Wing Span 29.5 ft. Wing Area 127 sq. ft. A set of pilot's notes are in the build manual. Noise Certification must be issued by the CAA.
They all have Rans ‘B wing’ except one UK 'C' Wing variant G-MYWV. It has 5" greater chord at 54" & 10" larger span ailerons of equal length to the flaps. The leading edge tube is attached at the same position on the fuselage, but the rear spar is moved aft 5" for the C wing. Changes to the kits since 1993: doors, fuel tanks, wing tip ribs, wing tensioning rib, tailcone side channels, lengthened engine mount and cowling.
Mandatory LAA Directives MPD: 2003-016 Revised seat attachments following a fatal accident in which seat collapsed onto elevator control rod & might have been a factor.
MPD: 1998-019-R1 Flexible Fuel Tubing - Applies to all Permit aircraft
Modifications for the UK.MOD-193-001 Fuel system mods
MOD-193-002 Fire precautions
MOD-193-003 Placards
MOD-193-004 Airframe mods after a 1980s fatal accident, compliance with Rans SB 08289-01 - rollers on the elevator push-pull rod.
MOD-193-005 Seat suspension cable (MPD 2003-006 refers) following a fatal accident in 2001.
MOD/193/006 mandatory tail bracing wires etc. tangs, inspections for cracks.
Service BulletinsSB 012390-03 Control linkage rod end connectors
SB 82091-011 Saddles – incorrect stand-off dimension
SB 061291-01 Pulley cable keepers
SB 092190-01 Lock rings on tail cable turnbuckles
SB 092090-01 Elevator hinge bolts
SB 082890-01 Elevator control – addition of rollers
SB 113 Longeron/main gear attachment point reinforcement
Assembly-Alert 135 Wing flap compression tube, incorrect bolt holes
Assembly-Alert 133 Expansion of rotationally moulded fuel tank
Assembly-Alert 125 Fuel cap venting
Assembly-Alert 109 Aft lift strut shim
Don't just rely on a/c log book entries, due to several differences. e.g disc or drum brakes, round or heavier aerofoil wing struts....
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