Special Detailed Inspection (Thermographic) of Elevator Top and Bottom Skin Panels, LH/RH

TASK 55-20-00-200-006-A
Special Detailed Inspection (Thermographic) of Elevator Top and Bottom Skin Panels, LH/RH

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:

ON THE THS OR IN THE REAR FUSELAGE
ON TOP OF THE WINGS OR PYLONS.

WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: BE CAREFUL WHEN YOU DO THE INSPECTION. THE COMPONENTS ARE MADE OF ALUMINIUM AND HAVE GLASSFIBER COVERS WHICH CAN BE EASILY DAMAGED.

ZONE: 335
ZONE: 345

1. Reason for the Job
Refer to the MPD TASK: 552007-01
SPECIAL DETAILED INSPECTION (THERMOGRAPHIC) OF ELEVATOR TOP AND BOTTOM SKIN PANELS, LH/RH.

NOTE: The effectivity of this task is "ALL". To know if this task is applicable for your aircraft, refer to the MPD task applicability and the weight variant data given in the SRM introduction.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	SYRINGE
No specific	AR	WARNING NOTICE(S)
98D27903500000	2	PIN-SIDE STICK LOCKING

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
335	ELEVATOR
345	ELEVATOR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 27-34-41-000-001-A	Removal of the Elevator
TASK 27-34-41-400-001-A	Installation of the Elevator
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
NTM 511003
SRM 514421
SRM 517511
SRM 517512
SRM 517712
NTM 552007
SRM 552111
Inspection - Elevator

3. Job Set-up
Subtask 55-20-00-860-057-B

A. System Configuration
(1) Find the identification of skin panels structure of your elevator SRM 552111.
(2) Make sure that the elevators are at the bottom stops of their travel limit.

Subtask 55-20-00-860-058-B

B. Depressurize Hydraulic Systems
(1) Depressurize the Green, Yellow and Blue hydraulic systems (Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-002) (Ref. AMM TASK 29-10-00-864-003).

Subtask 55-20-00-865-060-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B11
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B04
** ON A/C ALL
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
121VU	FLIGHT CONTROLS/THS ACTR/MOT3	19CE3	Q17
121VU	FLIGHT CONTROLS/THS ACTR/MOT1	19CE1	Q16
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

Subtask 55-20-00-481-053-B

D. Install Locking Devices
(1) Put the 98D27903500000 PIN-SIDE STICK LOCKING in the CAPT and F/O side stick controllers.

Subtask 55-20-00-941-054-B

E. Safety Precautions
(1) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
(2) Put the WARNING NOTICE(S) in position to tell persons not to operate the hydraulic systems.
(3) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at zone 334 for the left hand elevator and/or zone 344 for the right hand elevator.

Subtask 55-20-00-010-054-A

F. Get Access
(1) Remove the applicable Elevator (Ref. AMM TASK 27-34-41-000-001).

NOTE: Elevator removal is only necessary for NTM 552007 Thermographic Inspections Method A (Oven) and Method C (Refrigerator).

NOTE: NTM 552007 Thermographic Inspection Method B (Blankets) can be performed with the elevator installed or removed from aircraft.

Subtask 55-20-00-860-059-B

G. Preparation of the Inspection Areas
(1) Make sure that the outer surface of the inspection area is clean and smooth.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(2) If necessary, clean the outer surface of the inspection area with the Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) . Make sure the inspection area is dry before you continue.

4. Procedure
Subtask 55-20-00-280-051-A

A. Special Detailed Inspection
(1) Do a Thermographic Inspection of the elevator top and bottom skin panels NTM 552007.

NOTE: The elevator is removed. The applicable inspections are the NTM 552007 Thermographic Inspection Method A (Oven), Method B (Blankets) or Method C (Refrigerator).

NOTE: Classify the indications as regular or not regular in shape and grey color.

NOTE: All dark indications which cannot be identified as geometric changes such as ribs, hoisting points, fasteners, core splice, honeycomb filler, etc., surface irregularities, foreign materials or heat/cold source reflections on the surface must be considered to be liquid indications.

(2) Do a Tap-Test Inspection of the elevator top and bottom skin panels on and around the liquid indications NTM 511003.
(3) Do a check of the following signs to find previous existing repairs:
(a) Thermographic indications with a regular shape and color.
(b) Visual indications that the outer surface of the elevator panel is not homogeneous.
(4) If previous steps do not confirm approved existing repairs, remove locally the external surface protection at affected area looking for repair plies SRM 517511, paragraph 3.

NOTE: Sometimes, an aerodynamic smoother is applied over the repaired area. If this occurs, remove the aerodynamic smoother by same method as removal of external surface protection.

(5) Results:
(a) If the Thermographic Inspection and the Tap-test confirm the liquid ingress damage, refer to the SRM 552111 for:

Damage Evaluation,
Total Damage Area Calculation,
Definition of Repair Zones,
Allowable Damage Limits
and
Applicable Repair.

(b) If you are not sure about the indications do an analysis of them:

NOTE: This procedure is only applicable to the sandwich structure of the elevator skin panels where thermographic inspection according to NTM 552007 is done.

1 The indication is confirmed as an existing repair without liquid ingress damage, if:

The indication is regular in both, geometrical shape and grey color, and
Visual inspection of panel surface plus removal of the local external surface, if necessary, confirms an existing repair, and
The tap-test gives a clear ringing sound (not dull, not damped) (filler/resin confirmed at affected area) or no difference is noticed during Tap-Test Inspection between affected area and adjacent area.
If previous steps confirm the existing repair without liquid ingress damage, a re-protection surface is required SRM 517512.

2 The indication is confirmed as an existing repair with liquid ingress damage or a non-homogeneous repair, if:

The indication is regular in geometrical shape but not in grey color, and
Visual inspection of panel surface plus removal of the local external surface, if necessary, confirms an existing repair.
The results of the tap-test are not important for indication evaluation.
If previous steps confirm the existing repair with liquid ingress damage or a non-homogeneous repair, contact Airbus for instructions.

NOTE: The image of relevant thermographic indication must be reported to Airbus for assessment.

3 The indication is confirmed as a potted area (area which has been repaired with resin) of the panel, if:

The indication is irregular in shape, in grey color or in both, and
Visual inspection of panel surface plus removal of the local external surface, if necessary, does not confirm an existing repair, and
The tap-test shows a clear ringing sound (not dull, not damped) (filler/resin confirmed at affected area).
If previous steps confirm the potted area of the panel, a re-protection surface is required SRM 517512.

4 The indication could be confirmed as liquid ingress or resin accumulation, if:

The indication is irregular in shape, and
Visual inspection of panel surface plus removal of the local external surface, if necessary, does not confirm an existing repair, and
Results of the tap-test are not conclusive for indication.

NOTE: This procedure for liquid ingress confirmation is a destructive method and it should be applied only if it is strictly necessary.

CAUTION: MAKE SURE THAT THE DEPTH OF THE HOLE IS NOT MORE THAN 2 MM (0.0787 IN.). MAKE SURE THAT YOU DRILL ONLY THE OUTER SKIN, AND BE CAREFUL IN THE CHAMFER AREAS.

(6) Damage assessment by witness hole procedure:

NOTE: This procedure for liquid ingress confirmation is a destructive method. It is recommended to do only when you are not sure of the liquid ingress.

(a) Make a hole of 2 mm (0.0787 in.) of diameter SRM 514421, paragraph 3. Only outer sandwich skin must be drilled.
(b) No more than three holes must be drilled to confirm the trapped water indication. They must be drilled in the darker area of the thermographic indication and inspected one by one.

NOTE: The holes have to keep a minimum distance from 8 mm (0.3150 in.) to 12 mm (0.4724 in.) between the hole centers.

NOTE: The total damaged area due to hole drilling must not be more than 1000 mm2 (1.55 in.2) described in SRM 552111.

NOTE: Allowable Damage Limits (ADL) for liquid ingress is established in such a way that damage within this limit must be permanently repaired within the defined operating limit (refer to the SRM 552111).

1 If the drilled holes are located in an area with liquid ingress:
a And you are going to apply the ADL for liquid ingress ( SRM 552111), do one of the following procedures:

Procedure 1:

Do a damage evaluation SRM 552111. Liquid ingress area must not be included for the total damaged area.
Do a repair SRM 517712 Paragraph 2A.

Procedure 2:

Do a damage evaluation SRM 552111. Liquid ingress area must not be included for the total damaged area.
Perform a non-structural repair for damage less than 1000 mm2 (1.55 in.2) SRM 552111.

b And you are not going to apply the ADL for liquid ingress ( SRM 552111) do the subsequent steps:

Do a damage evaluation SRM 552111 including holes for the total damaged area.
Do a repair SRM 552111.

2 If the drilled holes are not located in an area with liquid ingress:
a Do a damage evaluation SRM 552111.
b Perform a non-structural repair for damage less than 1000 mm2 (1.55 in.2) SRM 552111.

5. Close-up
Subtask 55-20-00-081-052-B

A. Remove Locking Devices
(1) Remove the 98D27903500000 PIN-SIDE STICK LOCKING for the CAPT and F/O side stick controllers.

Subtask 55-20-00-865-063-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B11
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B04
** ON A/C ALL
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
121VU	FLIGHT CONTROLS/THS ACTR/MOT3	19CE3	Q17
121VU	FLIGHT CONTROLS/THS ACTR/MOT1	19CE1	Q16
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

Subtask 55-20-00-410-057-B

C. Close Access
(1) Install the Elevator removed (Ref. AMM TASK 27-34-41-400-001)
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 02:05:25 UTC