PS Magazine - JULY 1982
PS, The Preventative Maintenance Monthly
ISSUE 356
JULY 1982
C' bli
Iw W@Lc
Or±0
The
skin on yOur aircraft is pro-
•
tected by Paint, which Prevents most
·
' scratcHes from getting to the bare
metal and causing corrosion.
Not so with transParent Plastic. It±s
naked to the coLd, cold worLd! It usualLy
comes out second best in any confron-
tAtion, ending uP with
²³
´its and
sCRatches. µRew members are distract-
ed bY sunliGHt reflected in scratcHes.
Some Basic POinters
¶ou can see scratches in acryLic
Plastic and confirM them witH a fin-
gernail¸
Never restore the ¹Lastic in sUnº
shine or use heavy hand Pressure on
the reconditioning sandPa¹er. Either
Fortunately, there±s Polish kit,NSN
way, tHe heat built uP can cause craz»
1560-00±450²3³22,
right in tech su¹
¼
ing (smaLl internal cracks) ½nd ruin
Pl¾¿ÀÁVÂrything you need to make sPot
RePairs is in the kitÃJusT Äake sure you
Åollow tHe directions
carEflly.
the PlexiÆlassÃ
´µ
,±
Çse tHe wet (cool water) method of
PolisHing out the scÈatches. Éemove
OH-58
dooÈs, foÈ examPle, fRoÄ tHe
BiRd¸ ¶ou can tHen haul ±em to a water
souRce.
¶ou
don±t
want
to
scratch
tHe
Plastic any further By rubbiÊg in dust
oR diRtË so wash and riÊse the Panel
tHoRougHly. WiPe dRy with industrial
Mark the Damage
Çse a gRease Pencil aÊd Box the
damaged
aRea
by markiÊg
oÊ
the
undaÌaged side of tHe Panel. Íake
anotHeÈ box a couPle of iÊcHes laRgeÈ
tHan tHe fiÈst one¸ ÎHe idea here is to
Remove the small area of daÄage and
tHen blend the rePaiR iÊto a laRÏer
suRÅÐce. ¶ou get a ÏRadual ReÄoval of
Plastic mateRial to minimize distoRÑ
tioÊ in tHe Panel¸
SEleCT RighT SaNdpaper
When
you
reach
ÅÒÈ sandPaPeR
duRing tHe fiRst steP of tHe RePaiÈ,
nEvEr
Pick a gRade that is coaRseR tHan
you ÊeedÓ ÎHÔ saÊdPaPeÈ Has its own
"scÈatcHÕ PatteRn and you don±t want
to cReate deePeR scratcHes tHaÊ you
alReady Have¸ ÎHe loweR tHe gRade
ÊuÌBeR, tHe coarseR tHe sandPaPeR.
´¶
I.
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