MAULE AIRCRAFT CORPORATION
MAINTENANCE MANUAL
FOR
M-4/C/S/T
4
Rev. B
4/13/16
Revised 7/99
Cont’d
Care should be taken in the disposal of candy wrappers, paper scraps, cigarette
butts, etc. These can work their way under the floorboards and become a fire hazard, mois-
ture trap and could jam the control cables.
NOTE: While washing the aircraft, ascertain that all drain holes are open. Clean out
any debris blocking them. Accumulated water can be dangerous, so check behind the bag-
gage compartment frequently.
Textile upholstery may be cleaned using a vacuum cleaner. Grease and oil spots on
the upholstery should be treated with a spot remover or dry cleaning fluid. Do not use soap
and water on textile materials.
Vinyl upholstery may be cleaned using soft whiskbroom or suds of any mild soap
(castile or olive oil base) in lukewarm water. Use water sparingly as the upholstery otherwise
requires a long time to dry if water trickles through the seam stitches.
For best results, stains, especially those caused by grease or paint, should be re-
moved from upholstery as soon as possible or they may become "set" and hard or impossi-
ble to remove. "Set" stains should be removed carefully with a clean cloth dampened in de-
natured alcohol. Stains caused by shoe polish can best be removed with turpentine. How-
ever, such cleaning agents are liable to affect the dust-repellent finish of the vinyl if used in
excess of the actual requirements. Never use volatile solvents such as lacquer thinner, ace-
tone, etc. on upholstery.
The cleaning should be completed by wiping the surface of the vinyl dry with a clean
cloth, particularly in the seam. No attempt should be made to apply preservatives such as
wax, polish, or varnishes, as these will not be absorbed by vinyl, but will merely collect dust.
There are protective treatments made especially for vinyl that are commercially available and
quite satisfactory.
