DOC AIRBUS | AMM A320FVisual Inspection of the Oil Tank [CFML]
TASK 79-11-05-210-801-A
Visual Inspection of the Oil Tank
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 79-11-05-941-052-A
Subtask 79-11-05-210-050-A
Subtask 79-11-05-410-051-A
[Rev.10 from 2021]
2026.04.01 03:42:52 UTC
Visual Inspection of the Oil Tank
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.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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)-ADJUSTABLE |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-803-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-803-A | Closing of the Fan Cowl Doors |
| TASK 79-11-05-000-801-A | Removal of the Oil Tank |
| TASK 79-11-05-400-801-A | Installation of the Oil Tank |
| TASK 79-11-05-960-801-A | Replacement of Assembly Cap, Adapter and/or Packing |
Oil TankSubtask 79-11-05-941-052-A
A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 79-11-05-010-052-A (1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:
- The ENG/MODE selector switch
- The ENG/MASTER 1(2) control switch.
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position.
4. Procedure(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position.
Subtask 79-11-05-210-050-A
A. Visual Inspection of the Oil Tank:
(1) Do the visual inspection of the low stress areas of the rough surfaces for:
(2) Do the visual inspection of the high stress areas of the rough surfaces for:
(3) Do the visual inspection of the low stress areas of the tank body (Sheet metal / Machined WALL / Thin wall) (Thickness less than 0.12 in. (3.05 mm)):
(4) Do the visual inspection of the high stress areas of the tank body (Sheet metal / Machined WALL / Thin wall) (Thickness less than 0.12 in. (3.05 mm)):
(5) Do the visual inspection of the low stress areas of the machined surfaces:
(6) Do the visual inspection of the high stress areas of the machined surfaces:
(7) Do the visual inspection of the low stress areas of the weld bead surfaces:
(8) Do the visual inspection of the high stress areas of the weld bead surfaces:
(9) Do the visual inspection of tank body for:
(10) Do the visual inspection of areas between the filler cap for:
(11) Do the visual inspection of sight glass for:
5. Close-up(1) Do the visual inspection of the low stress areas of the rough surfaces for:
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Type 0 defect: Coloring | |||
| A.Spot of color and stain (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified. | Not repairable. | Not applicable. |
| B.Spot of color and stain (Acceptable with corrective action defect) | Not serviceable, if the surface roughness is modified. | Not repairable. | Change the type of defect and follow the guidelines associated to this type. |
| C.Surface finish (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified and the surface finish is uniform over the entire surface or over a simple geometrical shape in case of rework. | Not repairable. | Not applicable. |
| 2.Type 1 defect: Smoothed loss of material | |||
| A.Blending and cut (Acceptable without corrective action defect) | Serviceable, if the remaining surface is more than 70 percent of the original minimum thickness (If there is no specific requirements). | Not repairable. | Not applicable. |
| 3.Type 2 defect: Smoothed distortion of surface without loss of material | |||
| A.Dent (Acceptable without corrective action defect) | Serviceable, if theta is more than 120 degrees and h is less than or equal to 0.006 in. (0.15 mm) and r is more than or equal to 0.004 in. (0.10 mm). | Not repairable. | Not applicable. |
| B.Dent (Acceptable with corrective action defect) | Not serviceable, if theta is less than 120 degrees or h is more than 0.006 in. (0.15 mm) or r is less than 0.004 in. (0.10 mm). | Not repairable. | Remove stress concentration in order to smooth the defect so it is classified as acceptable Type 1 defect. |
| 4.Type 3 defect: Loss of material on large area without measurable depth | |||
| A.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable without corrective action defect) | Serviceable, if the depth is not measurable. | Not repairable. | Not applicable. |
| 5.Type 4 defect: Sharp loss of material | |||
| A.Nick, scratch and scoring or groove (Acceptable without corrective action defect) | Serviceable, if theta is more than 120 degrees and h is less than or equal to 0.006 in. (0.15 mm) and r is more than or equal to 0.004 in. (0.10 mm). | Not repairable. | Not applicable. |
| B.Nick, scratch and scoring or groove (Acceptable with corrective action defect) | Not serviceable, if theta is less than 120 degrees or h is more than 0.006 in. (0.15 mm) or r is less than 0.004 in. (0.10 mm). | Not repairable. | Remove stress concentration in order to smooth the defect so it is classified as acceptable Type 1 defect. |
| 6.Type 5 defect: Superficial imperfections | |||
| A.Sulfuric anodisation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| B.Sulfuric anodisation defect (Acceptable with corrective action defect) | Not Serviceable. | Not repairable. | Protect the affected areas with alodine. |
| C.Passivation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| D.Corrosion, pitting and fretting (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Polish the surface to remove corrosion. The corrective action must allowed to classify the defect as Type 1 defect (Acceptable with corrective action defect). |
| 7.Type 6 defect: Raised imperfection | |||
| A.Burr, roll over and protruding material (Acceptable without corrective action defect) | Not serviceable, if there is no impact on functionality. | Not repairable. | Not applicable. |
| B.Burr, roll over and protruding material (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Remove raised imperfection by blending to come back to nominal design. |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Type 0 defect: Coloring | |||
| A.Spot of color and stain (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified. | Not repairable. | Not applicable. |
| B.Spot of color and stain (Acceptable with corrective action defect) | Not serviceable, if the surface roughness is modified. | Not repairable. | Change the type of defect and follow the guidelines associated to this type. |
| C.Surface finish (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified and the surface finish is uniform over the entire surface or over a simple geometrical shape in case of rework. | Not repairable. | Not applicable. |
| 2.Type 3 defect: Loss of material on large area without measurable depth | |||
| A.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable without corrective action defect) | Serviceable, if the depth is not measurable. | Not repairable. | Not applicable. |
| 3.Type 5 defect: Superficial imperfections | |||
| A.Sulfuric anodisation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| B.Sulfuric anodisation defect (Acceptable with corrective action defect) | Not Serviceable. | Not repairable. | Protect the affected areas with alodine. |
| C.Passivation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| D.Corrosion, pitting and fretting (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Polish the surface to remove corrosion. The corrective action must allowed to classify the defect as Type 1 defect (Acceptable with corrective action defect). |
| 4.Type 6 defect: Raised imperfection | |||
| A.Burr, roll over and protruding material (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Remove raised imperfection by blending to come back to nominal design. |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Type 0 defect: Coloring | |||
| A.Spot of color and stain (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified. | Not repairable. | Not applicable. |
| B.Spot of color and stain (Acceptable with corrective action defect) | Not serviceable, if the surface roughness is modified. | Not repairable. | Change the type of defect and follow the guidelines associated to this type. |
| C.Surface finish (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified and the surface finish is uniform over the entire surface or over a simple geometrical shape in case of rework. | Not repairable. | Not applicable. |
| 2.Type 1 defect: Smoothed loss of material | |||
| A.Blending and cut (Acceptable without corrective action defect) | Serviceable, if the remaining surface is more than 70 percent of the original minimum thickness (If there is no specific requirements). | Not repairable. | Not applicable. |
| 3.Type 2 defect: Smoothed distortion of surface without loss of material | |||
| A.Bump (Acceptable without corrective action defect) | Serviceable, if:
| Not repairable. | Not applicable. |
| B.Dent (Acceptable without corrective action defect) | Serviceable, if theta is more than 120 degrees and h is less than or equal to 0.006 in. (0.15 mm) and r is more than or equal to 0.004 in. (0.10 mm). | Not repairable. | Not applicable. |
| C.Dent (Acceptable with corrective action defect) | Not serviceable, if theta is less than 120 degrees or h is more than 0.006 in. (0.15 mm) or r is less than 0.004 in. (0.10 mm). | Not repairable. | Remove stress concentration in order to smooth the defect so it is classified as acceptable Type 1 defect. |
| 4.Type 3 defect: Loss of material on large area without measurable depth | |||
| A.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable without corrective action defect) | Serviceable, if the specified rugosity is verified. | Not repairable. | Not applicable. |
| 5.Type 4 defect: Sharp loss of material | |||
| A.Nick, scratch and scoring or groove (Acceptable without corrective action defect) | Serviceable, if theta is more than 120 degrees and h is less than or equal to 0.006 in. (0.15 mm) and r is more than or equal to 0.004 in. (0.10 mm). | Not repairable. | Not applicable. |
| B.Nick, scratch and scoring or groove (Acceptable with corrective action defect) | Not serviceable, if theta is less than 120 degrees or h is more than 0.006 in. (0.15 mm) or r is less than 0.004 in. (0.10 mm). | Not repairable. | Remove stress concentration in order to smooth the defect so it is classified as acceptable Type 1 defect. |
| 6.Type 5 defect: Superficial imperfections | |||
| A.Sulfuric anodisation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| B.Sulfuric anodisation defect (Acceptable with corrective action defect) | Not Serviceable. | Not repairable. | Protect the affected areas with alodine. |
| C.Passivation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| D.Corrosion, pitting and fretting (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Polish the surface to remove corrosion. The corrective action must allowed to classify the defect as Type 1 defect (Acceptable with corrective action defect). |
| 7.Type 6 defect: Raised imperfection | |||
| A.Burr, roll over and protruding material (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Remove raised imperfection by blending to come back to nominal design. |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Type 0 defect: Coloring | |||
| A.Spot of color and stain (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified. | Not repairable. | Not applicable. |
| B.Spot of color and stain (Acceptable with corrective action defect) | Not serviceable, if the surface roughness is modified. | Not repairable. | Change the type of defect and follow the guidelines associated to this type. |
| C.Surface finish (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified and the surface finish is uniform over the entire surface or over a simple geometrical shape in case of rework. | Not repairable. | Not applicable. |
| 2.Type 3 defect: Loss of material on large area without measurable depth | |||
| A.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable without corrective action defect) | Serviceable, if the specified rugosity is verified. | Not repairable. | Not applicable. |
| 3.Type 5 defect: Superficial imperfections | |||
| A.Sulfuric anodisation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| B.Sulfuric anodisation defect (Acceptable with corrective action defect) | Not Serviceable. | Not repairable. | Protect the affected areas with alodine. |
| C.Passivation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| D.Corrosion, pitting and fretting (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Polish the surface to remove corrosion. The corrective action must allowed to classify the defect as Type 1 defect (Acceptable with corrective action defect). |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Type 0 defect: Coloring | |||
| A.Spot of color and stain (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified. | Not repairable. | Not applicable. |
| B.Spot of color and stain (Acceptable with corrective action defect) | Not serviceable, if the surface roughness is modified. | Not repairable. | Change the type of defect and follow the guidelines associated to this type. |
| C.Surface finish (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified and the surface finish is uniform over the entire surface or over a simple geometrical shape in case of rework. | Not repairable. | Not applicable. |
| 2.Type 1 defect: Smoothed loss of material | |||
| A.Blending and cut (Acceptable without corrective action defect) | Serviceable, if the remaining surface is more than 70 percent of the original minimum thickness (If there is no specific requirements). | Not repairable. | Not applicable. |
| 3.Type 2 defect: Smoothed distortion of surface without loss of material | |||
| A.Dent (Acceptable without corrective action defect) | Serviceable, if the remaining surface is more than 90 percent of the original minimum thickness (If there is no specific requirements). | Not repairable. | Not applicable. |
| 4.Type 3 defect: Loss of material on large area without measurable depth | |||
| A.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable without corrective action defect) | Serviceable, if the specified rugosity is verified. | Not repairable. | Not applicable. |
| 5.Type 4 defect: Sharp loss of material | |||
| A.Nick, scratch and scoring or groove (Acceptable without corrective action defect) | Serviceable, if theta is more than 120 degrees and h is less than or equal to 0.006 in. (0.15 mm) and r is more than or equal to 0.004 in. (0.10 mm). | Not repairable. | Not applicable. |
| B.Nick, scratch and scoring or groove (Acceptable with corrective action defect) | Not serviceable, if theta is less than 120 degrees or h is more than 0.006 in. (0.15 mm) or r is less than 0.004 in. (0.10 mm). | Not repairable. | Remove stress concentration in order to smooth the defect so it is classified as acceptable Type 1 defect. |
| 6.Type 5 defect: Superficial imperfections | |||
| A.Sulfuric anodisation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| B.Sulfuric anodisation defect (Acceptable with corrective action defect) | Not Serviceable. | Not repairable. | Protect the affected areas with alodine. |
| C.Passivation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| D.Corrosion, pitting and fretting (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Polish the surface to remove corrosion. The corrective action must allowed to classify the defect as Type 1 defect (Acceptable with corrective action defect). |
| 7.Type 6 defect: Raised imperfection | |||
| A.Burr, roll over and protruding material (Acceptable with corrective action defect) | Not serviceable, if there is an impact on functionality. | Not repairable. | Remove raised imperfection by blending to come back to nominal design. |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Type 0 defect: Coloring | |||
| A.Spot of color and stain (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified. | Not repairable. | Not applicable. |
| B.Spot of color and stain (Acceptable with corrective action defect) | Not serviceable, if the surface roughness is modified. | Not repairable. | Change the type of defect and follow the guidelines associated to this type. |
| C.Surface finish (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified and the surface finish is uniform over the entire surface or over a simple geometrical shape in case of rework. | Not repairable. | Not applicable. |
| 2.Type 3 defect: Loss of material on large area without measurable depth | |||
| A.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable without corrective action defect) | Serviceable, if the specified rugosity is verified. | Not repairable. | Not applicable. |
| 3.Type 5 defect: Superficial imperfections | |||
| A.Sulfuric anodisation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| B.Sulfuric anodisation defect (Acceptable with corrective action defect) | Not Serviceable. | Not repairable. | Protect the affected areas with alodine. |
| C.Passivation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| D.Corrosion, pitting and fretting (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Polish the surface to remove corrosion. The corrective action must allowed to classify the defect as Type 1 defect (Acceptable with corrective action defect). |
| 4.Type 6 defect: Raised imperfection | |||
| A.Burr, roll over and protruding material (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Remove raised imperfection by blending to come back to nominal design. |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Type 0 defect: Coloring | |||
| A.Spot of color and stain (Acceptable without corrective action defect) | Not serviceable, if weld bead is not compliant with the product welding specification. | Not repairable. | Refer to the product welding specification. |
| B.Spot of color and stain (Acceptable with corrective action defect) | Not serviceable, if weld bead is not compliant with the product welding specification. | Not repairable. | Refer to the product welding specification. |
| C.Surface finish (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified and the surface finish is uniform over the entire surface or over a simple geometrical shape in case of rework. | Not repairable. | Not applicable. |
| 2.Type 1 defect: Smoothed loss of material | |||
| A.Blending and cut (Acceptable without corrective action defect) | Serviceable, if the weld bead is compliant with the product welding specification (Weld bead geometry and associated controls). | Not repairable. | Not applicable. |
| 3.Type 2 defect: Smoothed distortion of surface with loss of material | |||
| A.Dent (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Remove stress concentration in order to smooth the defect, if it is allowed as per the product welding specification. |
| 4.Type 3 defect: Loss of material on large area without measurable depth | |||
| A.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable without corrective action defect) | Not serviceable, if the depth is not measurable. | Not repairable. | Not applicable. |
| B.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable with corrective action defect) | Not serviceable, if the depth is measurable. | Not repairable. | Remove stress concentration in order to smooth the defect, if it is allowed as per the product welding specification. |
| 5.Type 4 Defect: Sharp loss of material | |||
| A.Nick, scratch and scoring or groove (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Remove stress concentration in order to smooth the defect, if it is allowed as per the product welding specification. |
| 6.Type 5 defect: Superficial imperfections | |||
| A.Sulfuric anodisation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| B.Sulfuric anodisation defect (Acceptable with corrective action defect) | Not Serviceable. | Not repairable. | Protect the affected areas with alodine. |
| C.Passivation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| D.Corrosion, pitting and fretting (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Polish the surface to remove corrosion. The corrective action must allowed to classify the defect as Type 1 defect (Acceptable with corrective action defect). |
| 7.Type 6 defect: Raised imperfection | |||
| A.Burr, roll over and protruding material (Acceptable with corrective action defect) | Not serviceable, if there is an impact on functionality. | Not repairable. | Remove stress concentration in order to smooth the defect, if it is allowed as per the product welding specification. |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Type 0 defect: Coloring | |||
| A.Spot of color and stain (Acceptable without corrective action defect) | Not serviceable, if weld bead is not compliant with the product welding specification. | Not repairable. | Refer to the product welding specification. |
| B.Spot of color and stain (Acceptable with corrective action defect) | Not serviceable, if weld bead is not compliant with the product welding specification. | Not repairable. | Refer to the product welding specification. |
| C.Surface finish (Acceptable without corrective action defect) | Serviceable, if the surface roughness is not modified and the surface finish is uniform over the entire surface or over a simple geometrical shape in case of rework. | Not repairable. | Not applicable. |
| 2.Type 1 defect: Smoothed loss of material | |||
| A.Blending and cut (Acceptable without corrective action defect) | Serviceable, if the weld bead is compliant with the product welding specification (Weld bead geometry and associated controls). | Not repairable. | Not applicable. |
| 3.Type 2 defect: Smoothed distortion of surface with loss of material | |||
| A.Dent (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Remove stress concentration in order to smooth the defect, if it is allowed as per the product welding specification. |
| 4.Type 3 defect: Loss of material on large area without measurable depth | |||
| A.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable without corrective action defect) | Not serviceable, if the depth is not measurable. | Not repairable. | Not applicable. |
| B.Burnish mark, tool mark, tool lines, chatter mark and wear (Acceptable with corrective action defect) | Not serviceable, if the depth is measurable. | Not repairable. | Remove stress concentration in order to smooth the defect, if it is allowed as per the product welding specification. |
| 5.Type 4 Defect: Sharp loss of material | |||
| A.Nick, scratch and scoring or groove (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Remove stress concentration in order to smooth the defect, if it is allowed as per the product welding specification. |
| 6.Type 5 defect: Superficial imperfections | |||
| A.Sulfuric anodisation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| B.Sulfuric anodisation defect (Acceptable with corrective action defect) | Not Serviceable. | Not repairable. | Protect the affected areas with alodine. |
| C.Passivation defect (Acceptable without corrective action defect) | Serviceable, if the affected area is internal and oil wetted. | Not repairable. | Not applicable. |
| D.Corrosion, pitting and fretting (Acceptable with corrective action defect) | Not serviceable. | Not repairable. | Polish the surface to remove corrosion. The corrective action must allowed to classify the defect as Type 1 defect (Acceptable with corrective action defect). |
| 7.Type 6 defect: Raised imperfection | |||
| A.Burr, roll over and protruding material (Acceptable with corrective action defect) | Not serviceable, if there is an impact on functionality. | Not repairable. | Remove stress concentration in order to smooth the defect, if it is allowed as per the product welding specification. |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Visual inspection of tank body | |||
| A.Leakage | Not serviceable. | Not repairable. | Do the step as follows: -Make sure that the filler cap is not correctly locked, -If filler cap is not locked, replace the filler cap or filler cap packing (Ref. AMM TASK 79-11-05-960-801). |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Visual inspection of areas between the filler cap | |||
| A.Leakage and defect | Not serviceable. | Not repairable. | Do the step as follows: Replace the filler cap or filler cap packing (Ref. AMM TASK 79-11-05-960-801). |
| INSPECT/CHECK | MAXIMUM SERVICEABLE LIMITS | MAXIMUM REPAIRABLE LIMIT | REPAIR METHOD |
|---|---|---|---|
| 1.Visual inspection of sight glass | |||
| A.Cracks | Not serviceable. | Not repairable. | Replace the oil tank (Ref. AMM TASK 79-11-05-000-801) and (Ref. AMM TASK 79-11-05-400-801). |
| B.Cloudy glass window | Not serviceable. | Not repairable. | Replace the oil tank (Ref. AMM TASK 79-11-05-000-801) and (Ref. AMM TASK 79-11-05-400-801). |
| C.Leakage | Not serviceable, if there is any leakage between the sight glass and the tank envelope. | Not repairable. | Replace the oil tank (Ref. AMM TASK 79-11-05-000-801) and (Ref. AMM TASK 79-11-05-400-801). |
Subtask 79-11-05-410-051-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).