DOC AIRBUS | AMM A320FVisual Inspection of the Air Intake Cowl [CFMB]
TASK 71-11-00-210-001-A
Visual Inspection of the Air Intake Cowl
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 71-11-00-941-053-A ** ON A/C NOT FOR ALL
Subtask 71-11-00-210-050-A ** ON A/C NOT FOR ALL
Subtask 71-11-00-410-052-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 04:08:17 UTC
Visual Inspection of the Air Intake Cowl
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
ZONE: 400
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 27 and 24 lbf.in (0.31 and 0.27 m.daN )  |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-B | Closing of the Fan Cowl Doors |
Intake Cowl Forward and Aft BulkeadsSubtask 71-11-00-941-053-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 71-11-00-010-052-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.
(3) Removal of the anti-ice vent panel (30)
(a) Remove the bolts (25) and washers (20) that attach the access covers (5, 10, 15) to the aft bulkhead.
(b) Remove the access covers (5, 10, 15).
(c) Remove the screws (35, 40) that attach the anti-ice vent panel (30) to the inlet cowl outer barrel.
(d) Remove the anti-ice vent panel (30).
4. Procedure(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.
(3) Removal of the anti-ice vent panel (30)
(a) Remove the bolts (25) and washers (20) that attach the access covers (5, 10, 15) to the aft bulkhead.
(b) Remove the access covers (5, 10, 15).
(c) Remove the screws (35, 40) that attach the anti-ice vent panel (30) to the inlet cowl outer barrel.
(d) Remove the anti-ice vent panel (30).
Subtask 71-11-00-210-050-A ** ON A/C NOT FOR ALL
A. Visual Inspection of the Intake-Cowl Outer Barrel
Subtask 71-11-00-210-052-A ** ON A/C NOT FOR ALL | INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | REMARKS |
|---|---|---|
| 1.Examine the edge around the outer barrel skin 1.5 in. (38.1 mm) from all edges and cutouts for: | | |
| A.Abrasion | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| C.Delamination | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| D.Scratch or gouge | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| E.Hole | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| 2.Examine the outer barrel skin for: | | |
| A.Abrasion | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| C.Delamination | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| D.Scratch or gouge | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| E.Hole | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| 3.Examine the metal panels and doors for: | | |
| A.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Scratch or gouge | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| C.Hole | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| 4.Examine the interphone jack assembly for: | | |
| A.Loose or missing fasteners | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Loose or missing pieces | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
B. Visual Inspection of the Intake-Cowl Inner Barrel
Subtask 71-11-00-210-053-A ** ON A/C NOT FOR ALL | INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | REMARKS |
|---|---|---|
| 1.Examine the intake-cowl inner barrel for: | | |
| A.Delamination | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Dent | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| C.Gouge | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| D.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| E.Scratch | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| 2.Examine the riveted joint for: | | |
| A.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| 3.Examine the area 5 in. (127 mm) from engine attachment ring for: | | |
| A.Gouge | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Scratch | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| 4.Examine the area 5 in. (127.00 mm) from the engine attachment ring at the six o'clock area for: | | |
| A.Blister / corrosion-disbond / bulging | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Loose or missing fasteners | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
C. Visual Inspection of the Intake-Cowl Lip Structure
Subtask 71-11-00-210-054-A ** ON A/C NOT FOR ALL | INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | REMARKS |
|---|---|---|
| 1.Examine the fastener areas of the lip skin to intake-cowl forward bulkhead for: | | |
| A.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Dent | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| 2.Examine the lip skin for: | | |
| A.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Dent | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| C.Scratch or gouge | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| D.Hole | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
D. Visual Inspection of the Intake-Cowl Forward and Aft Bulkheads
5. Close-up| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | REMARKS |
|---|---|---|
| 1.Examine the forward and aft bulkhead fasteners, joints, and doublers for: | | |
| A.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| 2.Examine the forward and aft bulkheads for: | | |
| A.Crack | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| B.Dent or buckle | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| C.Scratch or gouge | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
| D.Holes | For maximum serviceable limits, please refer to NSRM 54-10-00 (Cage Code 51563). | See NSRM 54-10-00 (Cage Code 51563). |
Subtask 71-11-00-410-052-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Installation of the anti-ice vent panel (30)
(a) Install the bolts (25) and washers (20) that attach the access covers (5, 10, 15) to the aft bulkhead.
(b) TORQUE the bolts (25) to between 27 and 24 lbf.in (0.31 and 0.27 m.daN ).
(c) Install the screws (35, 40) that attach the anti-ice vent panel (30) to the inlet cowl outer barrel.
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Installation of the anti-ice vent panel (30)
(a) Install the bolts (25) and washers (20) that attach the access covers (5, 10, 15) to the aft bulkhead.
(b) TORQUE the bolts (25) to between 27 and 24 lbf.in (0.31 and 0.27 m.daN )
. (c) Install the screws (35, 40) that attach the anti-ice vent panel (30) to the inlet cowl outer barrel.
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).