DOC AIRBUS | AMM A320FGeneral Instructions on the Routing of the Wiring Harnesses [CFMB]
TASK 73-21-50-280-001-A
General Instructions on the Routing of the Wiring Harnesses
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 73-21-50-860-071-A ** ON A/C NOT FOR ALL
Subtask 73-21-50-280-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:59:09 UTC
General Instructions on the Routing of the Wiring Harnesses
ZONE: 400
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
Subtask 73-21-50-860-071-A ** ON A/C NOT FOR ALL
A. Not applicable.
4. ProcedureSubtask 73-21-50-280-050-A ** ON A/C NOT FOR ALL
A. General instructions related to the routing of the wiring harnesses.
(1) Make sure that all clamps are in place and correctly installed.
(2) Make sure that wiring harness length is evenly distributed between the attachment points and not stressed.
(3) Make sure that the harnesses do not touch the adjacent metal components. No physical contact permitted.
(4) Three engine areas are clearly identified where (because of space restrictions or other contingencies) the routing of different harnesses is such that they come as a bundle and thus, touch each others (cross or parallel physical contact). These areas are shown on the figures which follow
Permitted Harness-to-Harness Contact in the Lower Area of 6 o'clock Harness Bundle ** ON A/C NOT FOR ALL
Permitted Harness-to-Harness Contact Between N1 Speed Sensors Harnesses and other Harnesses (6 o'clock Area) ** ON A/C NOT FOR ALL
Permitted Harness-to-Harness Contact Between FRV Harnesses and Engine Oil Temperature Harness (6 to 8 o'clock Area) ** ON A/C NOT FOR ALL
Such physical contact is permitted. In addition to these 3 identified areas, you may possibly find other physical contact points between electrical harnesses routed in other engine areas. You must not have these physical contact points.
(1) Make sure that all clamps are in place and correctly installed.
(2) Make sure that wiring harness length is evenly distributed between the attachment points and not stressed.
(3) Make sure that the harnesses do not touch the adjacent metal components. No physical contact permitted.
(4) Three engine areas are clearly identified where (because of space restrictions or other contingencies) the routing of different harnesses is such that they come as a bundle and thus, touch each others (cross or parallel physical contact). These areas are shown on the figures which follow
Permitted Harness-to-Harness Contact in the Lower Area of 6 o'clock Harness Bundle ** ON A/C NOT FOR ALL Permitted Harness-to-Harness Contact Between N1 Speed Sensors Harnesses and other Harnesses (6 o'clock Area) ** ON A/C NOT FOR ALL Permitted Harness-to-Harness Contact Between FRV Harnesses and Engine Oil Temperature Harness (6 to 8 o'clock Area) ** ON A/C NOT FOR ALL