COMAC ARJ21-700 - Aircraft Cleaning - Cleaning and Application Surface Protection

ARJ21-SVV19-13120-00
RampServicingOperation
Instruction
Aircraftcleaning-Cleaningandapplicationsurfaceprotection
1.CommonInformation
A.Usethisproceduretocleanandpolishtheexternalsurfacesoftheaircraft.Cleantheexternalsur-
facesfrequentlytohelppreventcorrosionandtoextendthelifeoftheaircraftstructure.Cleanthe
surfacesthatdonothavepaintmorefrequentlythanthepaintedsurfaces.
B.Theliquidsusedinthisprocedurecancauseinjurytotheskinandeyes,ordamagetotheaircraft.
Alwayswearprotectiveclothingwhenyoucleantheaircraft.Thecleanercancausecorrosionifthey
arenotremovedcompletelyfromtheaircraftsurfaces.Thesolventthatismixedwiththecleaneris
ammable.Keepthesolventawayfromsourcesofheat.
C.Failuretoremovecoversoverpitot-staticprobesbeforeightmaycauselargeerrorsinairspeed-
sensingandaltitude-sensingsignals,whichmayleadtolossofsafeight.
D.Thissectionincludestheseprocedures:
(1)Removecontaminants(dustanddirt)fromsmoothsurfaces.
(2)Removecontaminantsaroundsensitivecomponents.
(3)Removeunwantedhydraulicuid.
E.Dothecleaningofsensitivesurfacesandcomponents,includingmechanicalcontrolsurfaces,landing
gearanditswheelwell,electronicprobesensorsorhydrauliccomponents.Payattentiontoprevent
mechanicaldamageandchemicaldamage(suchaschemicalsplash),improperoperationcancause
damagetocomponents.
F.Tocleanlargeareas,usenon-atomizingsprayequipment,swabs,andbrushes.Tocleansmallareas,
userags,brushes,andsponges.Donotcleananareasolargethatthecleanerdryonthesurface
beforeyoucanushitwithwater.
G.Whencleaningtheaircraft,youcanchoosetheappropriatecleaneroronlyusecleanwatertowork
accordingtotheactualsituation.
2.PreliminaryRequirements
WorkZones
ZoneLocation
100Lowerhalfofthefuselage:allradomeofSTA7-STA37,and
STA37-STA897.926lowerhalfofthebulkhead.(Thelower
halfistheareabelowthefuselagereferenceplane)
200Upperhalfofthefuselage:STA37-STA897.926bulkhead.
(Theupperhalfistheareaabovethefuselagereference
plane)
300FuselageTail
400PowerplantandPylon
500LeftWing
600RightWing
700LandingGearandLandingGearDoors
800Doors(withstandingpressurizationload)
ARJ21-A-13-12-15-01A-250A-A
Issue001,2023-01-29
Applicableto:ALL
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