(k)
Do an operational test of equipment which possibly could have been contaminated with blue water.
(l)
Remove warning placard from flight compartment.
(6)
Do a check of all hose connections and tighten connector clamps as necessary.
(7)
Do an inspection of the forward toilet waste system (AMM 38-32-00/501).
(8)
Install the moisture shroud (AMM 25-51-0/001).
(9)
Install the access panel on the airstair drip pan (AMM 25-51-0/001).
(10)
Install the toilet tank shroud (AMM 38-32-51/401).
(11)
Remove the tag and close the applicable lavatory flush motor circuit breaker.
(12)
Do the servicing procedure for the forward toilet system (AMM 12-17-00/201).
(13)
Close the electronic equipment compartment door (AMM 52-48-41/001).
(14)
Remove all tools and equipment from the work area.
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4. Toilet Over-Servicing Conditional Inspection (Aft Toilet)
A. General
(1)
This inspection procedure is to be done when an over-service of the aft toilet system has occurred or you think it has occurred.
NOTE: The term “over-service” is used to show that too much blue water has been used during the servicing of the toilet system, and has spilled inside the airplane.
(2)
It is possible for blue water contamination to occur in a single isolated area or more than one area, dependent upon the amount of liquid spilled.
(3)
A full visual inspection is necessary to confirm the extent of possible blue water
contamination.
NOTE: Spilled liquids can use different flowpaths to disperse.
(4)
It is recommended to do a check of the airplane records to see if there has been a spill of blue water before and if blue stains remain.
NOTE: Unnecessary work can be avoided if knowledge of another over-servicing is available for comparison.
B. References
(1)
AMM 12-17-00/201, Toilet Servicing
(2)
AMM 20-30-51/201, Miscellaneous Materials
(3)
AMM 25-40-06/401, Toilet Back Shroud
(4)
AMM 38-32-00/501, Toilet System
(5)
AMM 38-32-31/401, Toilet Drain Valve
(6)
AMM 38-32-51/401, Toilet Waste Tank
(7)
AMM 51-31-0/201, Seals and Sealing
C. Consumable Materials
(1)
Gown - Disposable
(2)
Gloves - Disposable
(3)
Shop Coat - Disposable
(4)
Mask, face - Disposable
(5)
Glasses - Safety
(6)
Cloth, lint-free
(7)
Cheesecloth
D. Access
(1)
Location Zones
109 Aft Lavatory or Galley (E)
113 Aft Lavatory (B)
114 Aft Lavatory or Galley (C)
118 Aft Lavatory or Galley (D)
218 Aft Cargo Compartment
219 Aft Cargo Compartment Door
220 Aft Cargo Compartment Equipment Bay
(2)
Access Panels
1502 Aft Toilet Service Panel
4504 Aft Cargo Compartment Door
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May 01/99 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 5-51-12 Page 207
E. Procedure
(1)
Drain the aft toilet waste tank (AMM 12-17-00/201).
NOTE: Drain the system only, do not complete a full service of the toilet system.
(2)
Open and tag the applicable lavatory flush motor circuit breaker.
(3)
Open the aft cargo compartment door for access (AMM 52-31-0/001).
(4)
Remove the access panel from the rear bulkhead in the aft cargo compartment.
(5)
Remove the toilet tank shroud(s), as given in the removal procedure for the toilet waste tank (AMM 38-32-51/401).
(6)
In the aft lavatory, do the steps that follow:
(a)
Look for signs of blue water on the lavatory floor.
(b)
Look for signs of the blue water on the areas which surround the toilet tank.
(7)
In the aft cargo compartment equipment bay, do the steps that follow:
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