(2)
A00249 Compound - Sealing, BMS 5-26, Type II, Class A-2
(3)
A00247 Sealant - Chromate, BMS 5-95, Type I
D. References
(1)
AMM 20-22-01/601, Electrical Bonding
(2)
AMM 51-51-00/801, Bonded Rub Pads
(3)
AMM 51-24-07/701, Skin and Fasteners
(4)
AMM 51-24-13/701, Water Displacing Corrosion Preventive Compound
(5)
IPC 53-51-01 Fig. 1 (Section 42)
(6)
IPC 53-51-01 Fig. 1 (Section 46)
E. Access
(1) Location Zones 291 Fairing - Wing-to-Body, Forward, Upper Half, Left 292 Fairing - Wing-to-Body, Forward, Upper Half, Right 293 Fairing - Wing-to-Body, Aft, Upper Half, Left 294 Fairing - Wing-to-Body, Aft, Upper Half, Right
F. Procedure
S 214-027
(1) Examine the mating surfaces on the structure and the fairing panel.
(a) Make sure all of the mating surfaces are clean and free from any contamination or painting.
S 214-028
(2) Make sure the teflon rubstrip is in a good condition.
(a) If it is necessary, repair the teflon rubstrip (AMM 51-51-00/801).
S 214-029
(3) Make sure the fasteners and the area around the fastener holes are clean.
NOTE: Fastener locations with stainless steel fasteners are usually at 4 locations per panel, (1) at each corner.
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(4) S 024-030Remove any paint or primer covering the conductive surface at the panel in the area underneath dimpled washer (Fig. 401).
(5) S 214-031If the conductive surface is flame sprayed aluminum, do the following: (a) Apply alodine over exposed aluminum (b) Install fasteners (stainless bolt and dimpled washer). (c) Measure the resistance as shown in Figure 401.
NOTE:____ Maximum resistance shall not exceed 0.5 OHMs.
(d) Touch up finish
(6) S 214-032If the conductive surface is anti-static coating, do the following: (a) Apply anti-static paint over exposed area (b) Install fasteners (stainless steel bolt and dimpled washer) (c) Measure the resistance as shown in Figure 401.
NOTE:____ Maximum resistance shall not exceed 300,000 OHMs.
(d) Touch up finish.
NOTE:____ Do not apply anti-static paint to flame sprayed aluminum.
(7) S 114-033Clean the body skin and the fasteners (AMM 51-24-07/701) for correct electrical bonding after the installation of the fairing.
(8) S 374-034Apply the corrosion preventive compound, MIL-C-11796, to the flanges on the fairing which touches the structure.
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S 394-050
CAUTION:_______ DO NOT APPLY SEALANT BETWEEN FAIRING THAT HAVE HI-FLOAT
NUTPLATES. STRUCTURAL DAMAGE TO THE FAIRING PANELS CAN RESULT
DURING FLIGHT IF YOU APPLY SEALANT INCORRECTLY.
DO NOT APPLY SEALANT IN THE FAIRING-TO-SKIN JOINTS WHERE THERE
ARE FLEXIBLE SEALS INSTALLED. STRUCTURAL DAMAGE TO THE
FAIRINGS CAN RESULT IF YOU APPLY SEALANT INCORRECTLY.
(9)
Apply the sealing compound, BMS 5-26 or BMS 5-95, to the flanges on the fairing which touches the body skin.
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