(c)
Also clean the areas of the remaining conducting strip above the static discharger.
(d)
Use a clean gauze or cheesecloth to absorb the solvent before it dries.
NOTE: To prevent contamination on the surfaces, permit no more
____ than 1 hour span from the time you clean to the time you you bond.
(e)
Use the Phosphoric Acid Non-Tank Anodize (PANTA) method to prepare the conductive strip and the repair area for bonding (SRM 51-70-09).
(f)
Apply a thin layer of adhesive to the trailing edge of the aileron and to the conducting strip.
(g)
Do not apply adhesive to the ends of the strip where it makes an overlap with the remaining strip.
NOTE: New and remaining strips must have full electrical
____ contact at areas that make an overlap
(h) Remove the unwanted adhesive with a clean gauze or cheesecloth lightly moist with solvent, Series 89 (AMM 20-30-89).
NOTE: Do not permit the solvent to get in the area that
____
you bond.
(i) Apply pressure and dry the bond (SRM 51-70-03 ).
S 418-007
(4) To complete the static discharger installation, you must obey 23-61-00/201 and the instructions that follow:
(a)
Apply sealant if it is necessary to fill the space where the new conducting strip makes an overlap with the remaining strip.
(b)
Use the bonding meter to measure the resistance between the discharger base and the conducting strip (AMM 20-22-01/601).
(c)
To make sure that there is electrical contact between the strips, measure to the remaining conducting strip and to the new conducting strip.
NOTE: The resistance must be no more than 0.010 ohms.
____
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S 228-008
(5) Measure the resistance between the rod and the base of the static dischargers that you installed during this repair (AMM 23-61-00/201).
G. Conducting Strip Finish.
S 358-009
(1)
Use smooth grit sandpaper to make the open surface of the conducting strip shiny.
S 168-013
(2)
Wash and rub the area clean.
S 378-010
(3)
Use a brush to apply Alodine 1200S or 1200 to the open surface of the strip.
NOTE: You will apply this last finish if it is necessary.
____
H. Repair the Aileron Static Discharger Conducting Strip
S 358-016
(1) If you only want to repair the electrical bonding of the aileron static discharger conducting strip, do the following:
(a)
Remove the static dischargers.
(b)
Remove the damaged portion of the conducting strip.
(c)
Clean the faying surfaces between the conducting strip and the aileron surface with aluminum oxide paper.
(d)
Wash and wipe the cleaned surfaces to remove residue.
(e)
Treat the cleaned surfaces with Alodine.
(f)
Bond the new conducting strip to the aileron.
(g)
Install the static dischargers.
(h)
Check the bonding resistance between the existing conducting strip and the new conducting strip.
NOTE: The resistance must be no more than 0.010 ohms.
(i)
Check the bonding resistance between the existing conducting strip and the static dischargers.
NOTE: The resistance must be no more than 0.010 ohms.
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747-400 MAINTENANCE MANUAL
TRAILING EDGE FLAPS - DESCRIPTION AND OPERATION
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