S 425-010
(4)
Connect the fairing panel to the wing skin but do not install all of the fasteners.
S 215-013
(5)
At fastener locations with stainless steel fasteners, usually 4 locations per panel, (1) at each corner.
S 025-014
(6)
Remove any paint or primer covering the conductive surface at the panel in the area underneath dimpled washer per View B.
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S 215-015
(7) If 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 resistance in accord with View C
(d)
Maximum resistance shall not exceed 0.5 OHMS
(e)
Touch up finish
S 215-016
(8) If 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 resistance in accord with View C
(d)
Maximum resistance shall not exceed 300,000 OHMs.
(e)
Touch up finish
NOTE: Do not apply anti-static paint to flame sprayed
____
aluminum.
S 225-011
(9)
Measure the seal clearances with the fairing panel installed (Fig. 501).
S 425-005
(10)
Install all of the fasteners to complete the installation of the fairing panel (AMM 53-51-01/401).
NOTE: Make sure the stainless steel bolts and dimpled washers are
____ installed at the same location(s) on the fairing panel as they were prior to removal of the panels. Installing different hardware in these location(s) may result in unacceptable electrical bonding.
S 765-017
(11)
Measure electrical bonding resistance between conductive fasteners and the fairing panel conductive surface, see View C.
S 765-019
(12)
Maximum resistance shall not exceed 300,000 OHMS for conductive paint.
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S 765-018
(13) Maximum resistance shall not exceed 0.5 OHMS for flame spray.
NOTE: Make resistance measurement prior to painting the panel and
____ the mounting hardware. If the fairing panel(s) and bolt(s) have been covered with paint, you may not get correct reading. In that case, use two sharp probes and make sure the probes contact the conductive finish on the panel and the matel on the mounting hardward and then measure the resistance.
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WING-TO-BODY FAIRINGS - CLEANING/PAINTING
_________________________________________
1. General
_______
A. This procedure has one task. The task gives instructions to clean and paint the wing-to-body fairing.
B. The underwing fairings have one layer of flame-sprayed aluminum, clear alodine, primer, and then polyurethane enamel.
C. The overwing fairings have one layer of the conditioner and the
conductive coating, primer, and then polyurethane enamel.
TASK 53-51-01-307-001
2. Wing-to-Body Fairing - Cleaning and Painting
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