WARNING: BLUE WATER CONTAMINATION CAN CAUSE SERIOUS DAMAGE TO ELECTRICAL OR ELECTRONIC EQUIPMENT. THIS CAN RESULT IN AN UNWANTED EFFECT ON THE FLIGHT SAFETY OF THE AIRPLANE.
(e)
If you find blue water has flowed into the electronic equipment compartment, put a warning placard in the flight compartment to tell all personal, “DO NOT OPERATE ELECTRONIC EQUIPMENT”, before you continue.
NOTE: The blue water can use the outer surface of tubes and cables as flowpaths to contaminate different areas of the electronic equipment compartment.
(f)
If you find signs of blue water contamination in the electronic equipment compartment, do a full visual inspection of the compartment.
NOTE: If a serious over-servicing occurs, it is possible for blue water to find flowpaths to many possible locations.
(g)
You must do full inspections of all electrical cable looms for signs of blue water.
(h)
You must do an inspection of all tubes, such as the pitot-static tubes, for signs of blue water.
(9)
If you have found signs of blue water, you must do the cleaning procedure for the toilet over-servicing task.
(10)
If you have not found signs of blue water, continue with this task.
(11)
Install the toilet shroud assembly, as given in the installation procedure for the toilet waste tank (AMM 38-32-51/401).
(12)
Remove the tag and close the applicable lavatory flush motor circuit breaker.
(13)
Do the servicing procedure for the forward toilet system (AMM 12-17-00/201).
(14)
Close the electronic equipment compartment door (AMM 52-48-41/001).
(15)
Remove all tools and equipment from the work area.
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3. Toilet Over-Servicing Conditional Cleaning (Forward Toilet)
A. General
(1)
If blue water contamination is found in the airplane, after an over-servicing event has occurred, an immediate cleanup action is necessary to prevent possible contamination of electrical or electronic components.
(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. All contaminated areas are to be completely cleaned.
(3)
It is most important that all moisture is removed from the contaminated area. Clean cloths and dry air are to be used.
(4)
In all areas where blue water contamination has to be removed and cleaned, you must use an approved disinfectant to kill all harmful micro-organisms.
(5)
The flight safety of the airplane, together with the safety of health and the prevention of bad smells, must be your first consideration when you complete this task.
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B. References
(1)
AMM 12-17-00/201, Toilet Servicing
(2)
AMM 20-30-31/201, Cleaners and Polishes
(3)
AMM 20-30-51/201, Miscellaneous Materials
(4)
AMM 25-51-0/001, Electronic Compartment
(5)
AMM 38-32-00/501, Toilet System
(6)
AMM 38-32-51/401, Toilet Waste Tank
(7)
AMM 51-31-0/201, Seals and Sealing
(8)
AMM 52-48-41/001, Electronic Equipment Compartment Door
(9)
AMM 52-61-0/001, Forward Airstair
C. Equipment
(1)
Workstand
(2)
Dry air supply
D. Consumable Materials
(1)
Gown – Disposable
(2)
Gloves – Disposable
(3)
Shop Coat – Disposable
(4)
Mask, face – Disposable
(5)
Glasses – Safety
(6)
Polyethylene sheet (AMM 20-30-51/201)
(7)
Wipers (AMM 20-30-51/201)
(8)
Cloth, lint-free
(9)
Cheesecloth
E. Access
(1)
Location Zones
103 Forward Lavatory (A)
205 Electronic Equipment Compartment
206 Forward Airstair Compartment
207 Forward Airstair
(2)
Access Panels
1104 Forward Toilet Service Panel
1201 Electronic Equipment Compartment Door
1601 Forward Airstair Door
F. Procedure
(1)
Put on protective clothing before you begin to clean up the blue water.
(2)
Use a clean absorbent cloth or a sponge to remove the blue water from the contamination area.
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