Fuel Leak at the Engine 1 Turbine Rear Frame Water Drain

TASK 71-00-00-810-812-A
Fuel Leak at the Engine 1 Turbine Rear Frame Water Drain

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 71-00-00-710-001	Dry Motoring Check
AMM 71-00-00-710-006	Minimum Idle Check
AMM 73-11-70-000-002	Removal of the Burner Selection Valve (BSV) for SAC Engines
AMM 73-11-70-400-002	Installation of the Burner Selection Valve (BSV) for SAC Engines
AMM 73-21-10-000-001	Removal of the Hydromechanical Unit (HMU)
AMM 73-21-10-000-002	Removal of the Hydromechanical Unit (HMU)
AMM 73-21-10-400-001	Installation of the Hydromechanical Unit (HMU)
AMM 73-21-10-400-002	Installation of the Hydromechanical Unit (HMU)

3. Fault Confirmation
Subtask 71-00-00-710-064-B ** ON A/C NOT FOR ALL

A. Not applicable.

4. Fault Isolation
Subtask 71-00-00-810-063-B ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the crew observation fuel leak at the Turbine Rear Frame water drain:

(1) If fuel leak is present, replace the BSV AMM 73-11-70-000-002 and AMM 73-11-70-400-002.

END OF CFM SB 73-112

(2) If fuel leak is present, replace the HMU AMM 73-21-10-000-001 AMM 73-21-10-400-001 AMM 73-21-10-000-002 AMM 73-21-10-400-002.

[Rev.8 from Aug 2018] 2026.04.04 04:34:56 UTC