### Service Newsletter

30 August 2013 Revision 01, 10 September 2013 

# SN 2000–1304 Page 1 

### 38–03 WATER/WASTE – POTABLE WATER SYSTEM – TEMPORARY FILLING PROCEDURE

This Service Newsletter is issued to inform operators of an alternative action to the deactivated potable water system called out in the Mandatory Service Bulletin Saab 2000–38–010 (EASA AD No.: 2013–0172R1). For continued operation of the potable water system, an activation and a temporary alternative filling procedure are approved (Ref. attachment 1, 2000PBS034334, Issue A). The alternative filling procedure includes a visual inspection to make sure that there is no water spray in Zone 116 (lower part of the forward fuselage) during refilling of the potable water. The alternative filling procedure must be used every time the potable water system is refilled until a final solution that terminates the AD No.: 2013–0172R1 is implemented in the aircraft.Appendix 1 to Engineering Statement 2000PBS034334 Page ͳ of ͵ Temporary Filling Procedure for the Potable Water System (For A/C with option 38:201 or 38:201-1)

1. General
a. This task gives you the procedure to fill the potable water system. 2. Material
a. Cloth, lint free. 3. Consumable Materials
a. None 4. Expandable Parts
a. None 5. Standard Tools and Equipment
a. Cart, water Service. b. Container - 5.0 L (1.3 US gal).
c. Container - 1.0 L (0.26 US gal). d. Safety glasses.
e. De-humidifier and/or a heater (If water spray is found). 6. Special Tools and Equipment
a. None 7. References
a. AMM TASK 24-00-00-860-801, Supply the External AC Power. b. AMM TASK 24-00-00-860-802, Remove the External AC Power.
c. Fig. 1 – Fill the potable water system. Note: If any water spray is found, the following procedures must be performed in order to detect any system malfunction.
d. AMM TASK 22-11-35-710-801, Operational test of Elevator Servo.
e. AMM TASK 27-21-00-720-801, Functional test of Rudder Control System. f. AMM TASK 27-31-00-710-801, Operational test of the Elevator Control System. g. AMM TASK 27-34-00-720-801, Functional test of Elevator Override Function. h. AMM TASK 27-34-00-720-802, Functional test of the Elevator Disconnect Function. 8. Job Set-Up
a. Put the water service cart near the water service door, 118BR. b. Put the 5.0 L (1.3 US gal) container under the water drain in the lower fuselage.
c. Supply the External AC Power (Ref. AMM TASK 24-00-00-860-801). d. Get access to the connectors on the aircraft: i. Open the water service door 118BR.
e. Get access for the visual inspection during the filling procedure: i. Remove the access door 116AR 9. Fill the potable water system (REF. FIG. 1).
a. At the water service panel, remove the cap (3) from the fill/drain connector (2). b. Connect the delivery hose of the water service cart to the fill/drain connector (2).
c. Set the fill/drain switch (1) to FILL.Appendix 1 to Engineering Statement 2000PBS034334 Page ʹ of ͵ WARNING: YOU MUST WEAR SAFETY GLASSES WHEN YOU INSPECT THE AREA FOR WATER SPRAY. IF NOT, INJURY TO PERSONS CAN OCCUR. d. Open the valve on the water service cart, at the same time, through the opening of the access door 116AR, visually inspect and make sure that there is no water spray in the area. i. If no visible water spray in the area is detected, close the valve when the water quantity indicator shows F (full), continue with step 9. e. ii. If water spray is detected, the defected part must be replaced or the system deactivated in accordance with SB 2000-38-010: 1. Visually inspect all parts for remains of water. Use a clean lint-free cloth and dry out affected area completely. 2. Install a suitable de-humidifier and/or a heater for a minimum of 4 hours. 3. Make sure the area and components are dry, special attention to the flight control system LVDTS, electrical connectors and visual bearing installations. Note: Operate the flight control systems during inspection. 4. Do the following AMM TASKS:

x AMM TASK 27-31-00-710-801, Operational test of the Elevator control system

x AMM TASK 27-21-00-720-801, Functional test of rudder control system

x AMM TASK 27-34-00-720-801, Functional test of elevator override function

x AMM TASK 27-34-00-720-802, Functional test of the elevator disconnect function

x AMM TASK 22-11-35-710-801, Operational test of elevator
servo 5. Repeat the step 9.d. and make sure there is no water spray in the
area.
e. In the galley, put the 1.0 L (0.26 US gal) container under the water faucet. f. Operate the water faucet until you get an air-free flow of water. g. In the lavatory, put the 1.0 L (0.26 US gal) container under the water faucet. h. Operate the water faucet until you get an air-free flow of water. i. Open the valve again on the water service cart. Close the valve when the water comes out of the drain in the lower fuselage. j. Set the fill/drain switch (1) to OFF. k. Disconnect the delivery hose of the water service cart from the fill/drain connector (2). l. Use the lint-free cloth to dry the work area.
m. Install the cap (3) on the fill/drain connector (2). 10. Job Close-Up
a. Remove the External AC Power (Ref. AMM TASK 24-00-00-860-802). b. Remove the equipment i. Remove and empty the containers.Appendix 1 to Engineering Statement 2000PBS034334 Page ͵ of ͵ ii. Remove all the tools, the materials and the equipment from the work area. Make sure the work area is clean.
c. Close the access i. Close the water service door 118BR. ii. Install the access door 116AR.

FIG. 1 – Fill the Potable Water