(b)
Replace  damaged finish when possible. Refer to Volume 1, 20-60-00
for protective finish systems.

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CORROSION PREVENTION MANUAL
FUSELAGE -SECTION 43

(c) Remove the latch fitting and the serrated plate from the sill and the
stringer. Examine the mating surfaces for corrosion. If corrosion is
slight, remove the corrosion. Then clean the mating surfaces.
Install the serrated plate and the latch fitting with sealant and
grease, as shown.

(6)If you clean an area with steam or high pressure water and detergent,
apply the corrosion inhibitor again.

(7)Do not apply  corrosion inhibiting compounds on interior materials such
as cargo liners. The compounds change the flammable quality of these
materials.

(8)Do not apply corrosion inhibiting  compounds on insulation blankets. The
compounds reduce the water-repellent quality of the blankets.

(9)
Do not apply corrosion  inhibiting compounds on grease joints or sealed
bearings. These compounds dissolve grease and other lubricants. They are
penetrating compounds and can get around the seals and into the bear-ings.

E.
Frequency of Application

(1)Periodic  inspection is required in areas identified as susceptible to
corrosion and should be consistent to the schedules specified in the
Maintenance Planning Document. Operators must be aware of reported prob-lems and areas of occurrences.

(2)
Periodic application  of BMS 3-23 compound is necessary to areas identi-fied and should be consistent to the schedule specified in the Mainte-nance Planning Document.

F.
Improved Corrosion Protection

(1)On airplanes  line number 140 and on, one more coat of yellow primer BMS
10-11, type 1 was applied per PRR 53423 to structure that touches pillow
blanket insulation.

(2)On airplanes  line number 74 and on, BMS 3-23, type 2 corrosion inhibit-ing compound was applied to structure around the cargo door.

(3)On airplanes  line number 83 and on, plus airplanes incorporating SB
53-0034, the drain holes were added to the sponge barriers and to the
fairing attach zee.

(4)On airplanes line number  328 and on, PRR 54313 added BMS 3-26 corrosion
preventive compound on top of the BMS 3-23 compound in the bilge area
below the cargo floor.

(5)On airplanes  line number 721 and on, PRR 54530-143 added two coats of
BMS 10-11, Type 1, primer to many panels and stringers in the forward
cargo compartment. This came as a result of Service Related Problems
757-SRP-53-0062 and 0065.

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CORROSION PREVENTION MANUAL
　
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