Loss of the FQI Output Buses by the DMC3

TASK 31-63-81-810-930-A
Loss of the FQI Output Buses by the DMC3

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 28-42-00-810-801-A	Fuel Quantity Indication Computer (FQIC) 3QT
TSM TASK 31-63-00-810-920-A	Loss of the FQI 1 Output Bus by the DMC 3
TSM TASK 31-63-00-810-921-A	Loss of the FQI 2 Output Bus by the DMC 3
AMM 31-60-00-740-007	GROUND SCANNING Test of the DMC

3. Fault Confirmation
Subtask 31-63-81-740-304-A ** ON A/C NOT FOR ALL

A. Test
Do the ground scanning test of the DMC AMM 31-60-00-740-007.

4. Fault Isolation
Subtask 31-63-81-810-212-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message FQI(3QT):

Do the fault isolation (Para. 4.A) as given in the troubleshooting procedures (Ref. TSM TASK 31-63-00-810-920) (Ref. TSM TASK 31-63-00-810-921).

(1) If the fault continues:

Do the fault isolation (Para. 4.A) as given in the troubleshooting procedure (Ref. TSM TASK 28-42-00-810-801).

Subtask 31-63-81-740-305-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:31:06 UTC