(2)Regular application of BMS 3-23 compound is necessary in areas identi-fied, and should agree with the schedules in the Maintenance Planning
Document.
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CORROSION PREVENTION MANUAL
VERTICAL STABILIZER
F. Improved Corrosion Protection
(1)On airplane line numbers 1 through 134, a Corogard corrosion preventive
finish was applied on all interspar surfaces. But, on airplanes line
number 135 and on, per PRR 53685, these surfaces get BMS 10-79, type 3
primer followed by BMS 10-100 (Aeroflex G12E25) corrosion protective
finish.
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CORROSION PREVENTIONMANUAL
VERTICAL STABILIZER
SECTION A-A
APPLYBMS 10-11,TYPE 1 AND
MIL-C-11796 CLASS 3 TO
REMOVABLEFASTENER HOLES
SECTION B-B
Vertical Stabilizer
Figure 1
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CORROSION PREVENTION MANUAL
RUDDER
1. General
A. Corrosion-resistant steel (CRES) collars are used with the bolts that attach
the ribs to the spars in graphite-epoxy rudders. But some airplanes between
line numbers 224 and 258 could have aluminum collars instead of the CRES
collars. Corrosion can occur on the aluminum collars.
2. Corrosion Prevention
A. To find out if the airplane has aluminum collars in the rudder, examine the
elevators per SB 55-0009. This service bulletin also gives procedures for
regular inspections and applicable repairs.
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CORROSION PREVENTION MANUAL
CHAPTER
57
WINGS
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AREA
Outer Wing
Trailing
Edge and
Trailing
Edge
Devices
CORROSION PREVENTION MANUAL WINGS
PROBLEM Corrosion of wing skin, sparsand dry bay INDEX PREVENTION VOLUME 2 57-20-01 TERMINATING ACTION (IF ANY)
Plugged drain holes 57-20-01
Corrosion of main landing gearbeam, trunnion and fittings 57-20-01
Corrosion of flap rollers, trailing trailing edge devices edge and 57-50-01
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