Waste Tank not Empty (more than 30%)

TASK 38-31-00-810-848-A
Waste Tank not Empty (more than 30%)

1. Possible Causes

waste in the waste tank
waste drain valve
control lever unit
waste-tank drain line

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 12-16-38-613-001	Servicing of the Toilet System
AMM 38-31-71-400-001	Installation of the Waste Drain Valve
AMM 38-31-73-400-001	Installation of the Control Lever Unit
AMM 38-31-74-400-001	Installation of the Waste Tank Drain Line

3. Fault Confirmation
Subtask 38-31-00-710-142-A ** ON A/C NOT FOR ALL

A. Do the servicing of the toilet system AMM 12-16-38-613-001.

4. Fault Isolation
Subtask 38-31-00-810-150-A ** ON A/C NOT FOR ALL

A. Make sure that there is no waste in the waste tank .
(1) If the FAP gives the maintenance message WASTE TANK NOT EMPTY - CHECK LEVEL - GROUND SERVICE REQUIRED:

Make sure that the waste drain valve operates correctly AMM 38-31-71-400-001.
Make sure that the control lever unit operates correctly AMM 38-31-73-400-001.
Make sure that there is no blockage at the waste-tank drain line AMM 38-31-74-400-001.

NOTE: It is recommended that the waste tank is drained after each flight.

[Rev.8 from Aug 2018] 2026.04.04 04:34:16 UTC