It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Airline Mechanic stumbles upon chemical spraying unit.
The other mechanics are happy to let them do it. Because of this you will have only 2 or 3 mechanics that work on these systems at any one airport. No one pays much attention to these guys and no mechanic socializes with another mechanic who only works on the waste systems. In fact I had never thought much about this situation until last month.
The next day I was on the company computer to look up a wiring schematic. While I was there I decided to look up the extra equipment I had found. To my amazement the manuals did not show any of the extra equipment I had seen with my own eyes the day before. I even tied in to the manufacturer files and still found nothing. Now I was really determined to find out what that equipment did.
Ford Lavatory Ground Service Truck
3.0 Water/Rinse Tank
3.1 200 gallon (757 liter) capacity
3.2 Stainless steel construction
3.3 Level gauge
3.4 Internal baffle
3.5 16”x12” (406 mmx305 mm) stainless steel manhole
4.0 Waste Tank
4.1 350 gallon (1325 liter) capacity
4.2 Stainless steel construction
4.3 Sight gauge
4.4 Internal baffles
4.5 20 inch (508 mm) stainless steel manhole
4.6 Open dump
Our premiere aircraft lav fluid. The only aircraft lavatory degerm, deodorizer, tank, bowl and pump cleaner that controls odors for up to fifteen hours. This product cleans recirculating pumps and filters, as well as flush rings and bowls. Mirabowl descales and removes sludge from holding tanks. As a result, maintenance costs on pump repair and replacement are reduced by up to 95%.
(note: Used in 55 gallon drums: )
55 gallon drums 7930-01-420-3593 MBQL01
Degerm Chemical Mix
Note: Degerm chemical in quart bottles (liquid form). Mixture is ½ quart of liquid per tank (100gals.) of water.
1. Position the “Waste Catch Bucket” under the lavatory service panel. Catch Bucket must be secured when transported and when placed on the ground.
2. Open lavatory service panel.
3. Remove the fill cap (#1) from the fill service port (#2). If fill cap is missing, notify proper personnel.
4. Release the handle (#3) and open the drain protective cap (#4).
5. Connect dump hose unit (#6) of the waste drain valve (#5).
6. Connect fill hose (#7) to fill port (#2).
7. Push the lever (#8) of the waste drain-valve actuator to open its internal flapper valve.
8. Pull and lock the control handle (#10) to open the holding tank-valve and continue tank drainage until the waste flow stops.
9. Release the control handle (#10).
10. Verify that waste has drained out of the aircraft by visually checking thru the drain hose. If uncertain as to the waste completely draining, check the lavatory from topside, for the presence of water by flushing the lavatory or by visually inspecting the tank by lowering the lavatory flapper. If verified that water is still in the tank, DO NOT INITIATE THE SERVICING PROCESS, contact maintenance or station management.
11. Flush the waste tank with four (4) gallons of designated ExpressJet approved de-germ water mix. Refer to chart. Make sure the fluid pressure is between a range of 35 - 50 psi.
12. Pull and lock the drain control handle (#10) to open the holding tank drain valve. Continue until the waste flow stops.
13. Release control handle (#10) after drainage has been completed.
14. Verify that the waste has drained out of the aircraft by visually checking thru the drain hose. If uncertain as to the waste completely draining, check the lavatory from topside, for the presence of water by flushing the lavatory or by visually inspecting the tank by lowering the lavatory flapper. If verified that water is still in the tank, DO NOT INITIATE THE SERVICING PROCESS, contact maintenance or station management.
15. Fill with two (2) gallons of ExpressJet approved degerm. Refer to chart. Make sure that the fluid pressure is between a range of 35 – 50 psi.
16. Disconnect the dump hose unit (#6) and fill hose (#7) from the aircraft. Wipe up all fluid present.
17. Close drain valve protective cap (#4) and the latch handle (#3) of the drain waste valve. Flapper valve will close automatically when cap is closed.
18. Install fill cap (#1) on fill port (#2). Ensure cap is properly sealed and not leaking. If leakage is observed, IMMEDIATELY contact Maintenance or station personnel.
19. Close waste service panel. Panel door will close only if the waste drain valve is properly closed.
20. Close lavatory service panel. Panel door will close only if the waste drain valve is properly closed. Close lavatory service panel.
21. Clean interior and exterior of lavatory service door.