NOTE: When a small amount of liquid is spilled, an inspection is not usually necessary.
(2)
In the galley areas, a water (liquid) barrier is installed to contain liquid when it is spilled. To protect the water barrier, vinyl mats cover the galley floor.
(3)
In the adjacent entry and service door thresholds, waste water drains are installed to remove liquids (gray water) from the floor. These drain holes must be kept free from blockages.
(4)
The integrity of the water barrier seal, in the forward galley areas, is most important because the location of the electronic equipment compartment is directly below the forward galley.
(5)
A leak from the forward galley which has a damaged water barrier, into the compartment below, could possibly cause serious damage to the electronic equipment. The result could be a possible hazard to the flight safety of the airplane.
B. References
(1)
AMM 20-30-51/201, Miscellaneous Materials
(2)
AMM 25-01-12/701, Equipment/Furnishings
(3)
AMM 25-27-211/401, Entry and Service Area Floor Covering
(4)
AMM 25-31-0/001, Galleys
(5)
AMM 25-31-51/401, Galley No. 1
(6)
AMM 25-31-61/401, Galley No. 4
(7)
AMM 38-31-0/001, Waste Water System
(8)
AMM 51-31-0/001, Seals and Sealing
(9)
AMM 53-21-0/401, Passenger Cabin Floors
(10)
AMM 53-21-11/801, Water Barrier
C. Equipment
(1) Workstand
500
May 01/99 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 5-51-13 Page 201
D. 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
E. Access
(1)
Location Zones
104 Forward Galley (1)
106 Forward Galley (2)
109 Aft Galley (3)
114 Aft Galley (4)
118 Aft Galley (6)
205 Electronic Compartment
218 Aft Cargo Compartment
219 Aft Cargo Compartment Door
220 Aft Cargo Compartment Equipment Bay
(2)
Access Panels
1201 Electronic Equipment Compartment Door
4504 Aft Cargo Compartment Door
F. Procedure
(1)
In the galley where the liquid was spilled, use a clean cloth or a sponge to remove all liquid from the floor of the galley area.
(2)
In the galley area where the liquid was spilled, remove the floor area covering (AMM 25-27-211/401), to do an inspection of the waterseal.
NOTE: The waterseal of the galley area can be damaged if care is not taken when you remove the vinyl floor mats.
(3)
Make sure the door threshold drain, adjacent to the galley area, is clear and free from blockages (AMM 38-31-0/001).
(4)
Inspect the fillet seal at the base of the galley for signs of damage.
(5)
Inspect the floor waterseal for signs of damage to materials and sealants.
(6)
If you find signs of damage to seals and/or sealing, refer to the approved repairs (AMM 53-21-0/801 and AMM 53-21-11/801).
(7)
If the inspection is applicable to the forward galley, open the electronic equipment compartment door for access.
(8)
If the inspection is applicable to the aft galley, open the aft cargo compartment door for access, and remove the access panel on the rear bulkhead of the aft cargo compartment.
(9)
Use a strong light and do a close visual examination of the area below the floor of the galley.
(10)
If you find signs of moisture below the galley area, in electronic equipment compartment or the aft cargo compartment equipment bay, do the steps that follow:
(a)
Use a clean cloth or a sponge to absorb and remove all moisture from the area.
(b)
Do an examination of all the waste-water drain tubes and related clamps for signs of a leak.
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