APU AUTO SHUT DOWN - OVERSPEED, Fuel Control Unit or ECB Fault (APS 3200)

TASK 49-00-00-810-893-A
APU AUTO SHUT DOWN - OVERSPEED, Fuel Control Unit or ECB Fault (APS 3200)

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 49-00-00-710-008	Operational Test of the APU
AMM 49-32-11-000-002	Removal of the Fuel Control Unit (APS 3200)
AMM 49-32-11-400-002	Installation of the Fuel Control Unit (APS 3200)

3. Fault Confirmation
Subtask 49-00-00-710-234-A ** ON A/C NOT FOR ALL

A. Do the operational test of the APU AMM 49-00-00-710-008.

4. Fault Isolation
Subtask 49-00-00-810-144-B ** ON A/C NOT FOR ALL

A. If the APU Last Leg Report gives the maintenance message:

FUEL CTL UNIT (8022KM)
Fault Code Number: 068

NOTE: The APU SHUTDOWNS report gives the maintenance message:
OVERSPEED - FUEL CTL UNIT (8022KM)
APU Auto Shut Down Fault Code Number: 068

replace the FUEL CONTROL UNIT (8022KM) AMM 49-32-11-000-002 and AMM 49-32-11-400-002.

Subtask 49-00-00-710-235-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:40:36 UTC