Equipment list operational and

REMARKS OR EXCEPTIONS

(M) Individual components may be inoperative provided:

a) Associated components are deactivated or isolated, and

b) Associated system components are verified not to have leaks.

NOTE: Any portion of the system works normally may be used.

MAINTENANCE PROCEDURES

For all scenarios: Prior to door closing, crew will advise all passengers as to the operational status of the toilet.

To deactivate a toilet that will not flush:

2. Disengage and tie-wrap the “TOILET POWER” circuit breaker located behind the upper fwd lavatory drawer (to the right of the sink when viewed from the toilet).

3. To check for leaks:

(a) On toilets without inspection ports installed in cover:

i) Remove seat back and seat pad.

ii) Raise toilet seat and remove screws.

iii) Remove toilet cabinet top by removing screws and disconnecting flush switch connector.

iv) Check all hoses, connections, and general area for leaks.

(b) On toilets with inspection ports installed in cover (Ref: SB750-25-11):

i) Remove seat back and seat pad.

ii) Using a port to observe, and another to shine a flashlight, observe thru each available inspection port to check hoses, connections and general area for leaks.

4. Any leaked fluid must be removed from the aircraft. If the tank will not hold fluid, go to step 6.

5. If desired, flush toilet manually as follows:
(a) Observe fluid level under the rubber flapper at the bottom of the bowl. If the tank is full, drain it using an appropriate ground service vehicle, following the instructions on the placard located inside the exterior service panel door. Then, with an empty tank,
(b) Pour 2 gallons of proper toilet solution into the bowl, rinsing the bowl as the fluid is poured.

6. If desired, service the toilet using an appropriate ground service vehicle, following the instructions on the placard located inside the exterior service panel door.

7. Following servicing or flushing, re-inspect the toilet system for leaks. If the tank drains into the drain line, leave the tank empty and:
(a) To prevent damage from freezing, empty the drain line into a ground service cart, and
(b) To account for the missing toilet solution, either
i) Adjust Zero Fuel Weight and ZFW-Moment for each flight by subtracting 15 pounds and 61.50 Inch-pounds/100 from the calculated Zero Fuel Weight and moment, or
ii) Add 15 pounds of ballast at the toilet fuselage station (FS 410). Soft ballast, such as a shot bag, can be placed in the toilet bowl (in a sturdy sealed plastic bag, if possible). Other ballast options include the vanity drawers/cabinets, with 15 to 16 pounds distributed evenly fore and aft of the sink.

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REMARKS OR EXCEPTIONS

8. Re-install toilet seat, cabinet cover, and upholstery.

9. Use paper or plastic to cover the toilet seat, with a placard attached stating; “TOILET INOPERATIVE.”
Service instructions with an inoperative toilet servicing system
(ie, liquid level sensor, fill valve, frozen fill line, etc):

1. Make appropriate discrepancy report entry.

2. Attach a placard stating which component of the system is inoperative, and if needed, “DO NOT SERVICE”, adjacent to, or connected to the Fill-Port-Cap lanyard, located on the External Toilet Service panel, below the RH engine.

3. Access the Interior Electrical J-box, located at the bottom LH corner of the aft bulkhead closet (aft of the vanity).

4. Disengage the 4 screws/camlocks and remove the J-box cover.

5. Disengage and tie-wrap the “TOILET SVC” circuit breaker 87V.

6. Reinstall the J-box cover and secure the closet.

7. Remove the toilet seat back and seat pad.

8. Raise toilet seat and remove screws.

9. Any leaked fluid must be removed from the aircraft. If the tank will not hold fluid, go to Will Not Flush, Step 6, above. To check for leaks:

(a) On toilets without inspection ports installed in cover:

i) Remove seat back and seat pad.

ii) Raise toilet seat and remove screws.

iii) Remove toilet cabinet top by removing screws and disconnecting flush switch connector.

iv) Check all hoses, connections, and general area for leaks.

(b) On toilets with inspection ports installed in cover (Ref: SB750-25-11):

i) Remove seat back and seat pad.

ii) Using a port to observe, and another to shine a flashlight, observe thru each available inspection port to check hoses, connections and general area for leaks.

10. If toilet servicing is desired, drain the toilet using an appropriate ground servicing vehicle, following the instructions on the placard
located inside the exterior service panel door.

11. With inoperative fill valve, pour 2 gallons of proper toilet solution into the bowl.

12. If desired, repeat steps 5, 6, 7.

13. Following servicing, re-inspect the toilet system for

14. Re-install switch connector, cabinet cover, toilet seat, and upholstery.

1. Make appropriate discrepancy report entry.

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REMARKS OR EXCEPTIONS

2. Any leaked fluid must be removed from the aircraft. If the tank will not hold fluid, go to Will Not Flush, Step 6, above. To check for leaks:

(a) On toilets without inspection ports installed in cover:

i) Remove seat back and seat pad.

ii) Raise toilet seat and remove screws.

iii) Remove toilet cabinet top by removing screws and disconnecting flush switch connector.

iv) Check all hoses, connections, and general area for leaks.

(b) On toilets with inspection ports installed in cover (Ref: SB750-25-11):

i) Remove seat back and seat pad.

ii) Using a port to observe, and another to shine a flashlight, observe thru each available inspection port to check hoses, connections and general area for leaks.

3. If desired, service the toilet using an appropriate ground servicing vehicle, following the instructions on the placard located inside the exterior service panel door. With an inoperative dump cable, it will be necessary to manually actuate the drain valve by pulling on the cable (located on the top of the tank, see step 2a) leading to the poppet valve in the tank.

4. Following servicing, re-inspect the toilet system for

5. Re-install toilet seat, cabinet cover, and upholstery.

6. Use paper or plastic to cover the toilet seat, with a placard attached stating; “TOILET INOPERATIVE.”