EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 1 of 17 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. TITLE : EQUIPMENT/FURNISHINGS - COCKPIT SEAT - INSPECTION OF ACTUATOR
1. PLANNING INFORMATION
A. EFFECTIVITY This service bulletin is applicable to cockpit seats P/N:

Ca p tain seat 2510112 series First Officer seat 2510113 series 2510112-41-11 2510112-51-11 2510112-55-11 2510113-41-11 2510113-51-03 2510113-55-04 2510112-41-12 2510112-51-12 2510112-55-13 2510113-41-12 2510113-51-11 2510113-55-05 2510112-43-01 2510112-53-01 2510112-55-14 2510113-43-01 2510113-51-12 2510113-55-11 2510112-43-04 2510112-53-02 2510112-55-15 2510113-43-04 2510113-53-01 2510113-55-13 2510112-43-07 2510112-53-03 2510112-61-01 2510113-43-07 2510113-53-02 2510113-55-14 2510112-43-11 2510112-53-04 2510112-61-02 2510113-43-11 2510113-53-03 2510113-55-15 2510112-43-12 2510112-53-06 2510112-63-01 2510113-43-12 2510113-53-04 2510113-61-01 2510112-43-13 2510112-53-07 2510112-63-02 2510113-43-13 2510113-53-05 2510113-61-02 2510112-43-14 2510112-53-11 2510112-63-03 2510113-43-14 2510113-53-06 2510113-63-01 2510112-43-16 2510112-53-12 2510112-63-04 2510113-43-15 2510113-53-07 2510113-63-02 2510112-43-17 2510112-53-13 2510112-63-06 2510113-43-16 2510113-53-11 2510113-63-03 2510112-45-01 2510112-53-14 2510112-63-07 2510113-43-17 2510113-53-12 2510113-63-04 2510112-45-03 2510112-53-16 2510112-65-01 2510113-45-01 2510113-53-13 2510113-63-05 2510112-45-11 2510112-53-17 2510112-65-03 2510113-45-03 2510113-53-14 2510113-63-06 2510112-45-13 2510112-55-01 2510112-65-04 2510113-45-11 2510113-53-15 2510113-63-07 2510112-45-14 2510112-55-02 2510112-65-05 2510113-45-13 2510113-53-16 2510113-65-01 2510112-45-15 2510112-55-03 2510113-45-14 2510113-53-17 2510113-65-03 2510112-51-01 2510112-55-04 2510113-45-15 2510113-55-01 2510113-65-04 2510112-51-02 2510112-55-05 2510113-51-01 2510113-55-02 2510113-65-05 2510112-51-03 2510113-51-02 2510113-55-03 B. CONCURRENT REQUIREMENTS Service Bulletin 2510112-25-813 must be applied before or in conjunction with the present SB.
C. REASON (1) History During a high angle take off, a first officer seat moved to the rear position step by step under the weight of the occupant without intervention on seat control commands. After this incident, the seat has been inspected. The horizontal actuator was found damaged. Inside the actuator, a bevel gear, normally attached with the disc key, was found jammed on the actuator shaft. The internal disc key was found broken, metallic particles between bevel gear and shaft made a friction and jammed the parts. Under this configuration and in normal condition, the seat operates correctly but if a strong weight is applied the seat can move backwards without control. Root cause of this disc key break-off is an over-torque applied on the actuator output shaft following misalignment between the electrical micro-switch stop and the end stop. This misalignment has been corrected through SB 2510112-25-813. However SB 2510112-28-813 does not request to check the condition of the actuator disk key. Investigations have s hown that the new event is linked to the fact that the actuator was damaged prior to VSB 2510112-25-813 application.EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 2 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. (2) Objective/Action Based on the information detailed above, EADS SOGERMA informs the operators that an inspection of seats is highly recommended in order to check the integrity of the horizontal actuator. A test must be applied to the seat to ensure that actuator is not damaged and make sure that locking function is still operational. A calibrated tensile test sample must be installed on the seat to test the actuator at a high torque to check the resistance of this disc key. (3) Advantages The inspection with the calibrated tensile test sample ensures that actuator is serviceable. The test is non destructive for the actuator. If the actuator is compliant with the directives of this Service Bulletin, it guarantees that the seat is serviceable and complies with the flight safety rules.
D. DESCRIPTION This Service Bulletin gives instructions to:

− Install the calibrated test sample.

− Do the operational test.

− Return the seat to the serviceable condition.

− Apply the identification label.
E. APPLICATION (1) Classification

− Recommended (2) Accomplishment timescale Accomplishment of this Service Bulletin must be done at the first opportunity. After application, complete and return imperatively report sheet to EADS SOGERMA (Refer to the last page of this Service Bulletin for further details).
F. APPROVAL The modification procedures described in this VSB have been reviewed and technically accepted by Airbus Design Office to apply to the Airbus fleet affected.

This SB does not contain any change information that revises the equipment definition covered by Airbus approved modifications.
G. MANPOWER 1 fitter/mechanic Approximate time:

− To do the test : 20 minutes (For one seat)

− Replace the seat : Refer to AMM task 25-11-11 for Captain seat Refer to AMM task 25-11-12 for First/Officer seat (Removal / Installation on A/C)

− Replace the actuator : 30 minutes (For one seat)
H. WEIGHT AND BALANCE None.EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 3 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. I. DATA ON ELECTRICAL LOAD ANALYSIS None.
J. REFERENCES

− EADS SOGERMA CMM : 25-11-19 for 2510112-XX / 2510113-XX seat series (XX= 41, 43, 51, 53, 61, 63) 25-11-22 for 2510112-X5 / 2510113-X5 seat series (X= 4, 5, 6)
K. OTHER DOCUMENTS CONCERNED None.
L. INTERCHANGEABILITY OF PARTS None.
2. INFORMATION ON MATERIAL
A. MATERIAL - COST AND AVAILABILITY The modification kits can be ordered at our logistic centres:

For Europe

EADS SOGERMA ZONE INDUSTRIELLE DE L’ARSENAL CS 60109 17303 ROCHEFORT CEDEX - France Phone : (33).5.46.82.83.04 or (33).5.46.82.85.41 Fax : (33).5.46.82.83.24 SITA Code : RCOSSCR Spec 2000: RCOSSCR E-mail addresses : SCOD1@sogerma.eads.net

For USA, CANADA, CENTRAL AND SOUTH AMERICA

BARFIELD INC (on behalf of EADS SOGERMA) 4101 N.W. 29th Street MIAMI - FLORIDA 33142 USA Phone: (1).305.871.3900 Fax: (1).305.894.5451 SPEC2000: MIABFCR E-mail : mario.ross@barfieldinc.com larry.vaquero@barfieldinc.comEADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 4 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. For ASIA & PACIFIC

ELTRA AERONAUTICS (S) PTE LTD (CAGE Code: QB280) (On behalf of EADS SOGERMA) 102EPASIR PANJANG ROAD #08-03 CITILINK WAREHOUSE COMPLEX SINGAPORE 118529

Phone: +65.6275.0600 Fax: +65.6275.6066 SITA: SINSAXD SPEC2000: SINSAXD E-mail : customer.service@eltra.com.sg

For MIDDLE EAST

TUFUL WORLD TRADING (On behalf of EADS SOGERMA)

Dubai Office : RM. 405 AL ETHIAD BLDG. OPPOSITE OF DEIRA CITY CENTER PO BOX 28812 DUBAI, UNITED ARAB EMIRATES

Sharjah Warehouse : P6-140 SHARJAH International Airport Freezone PO BOX 121065 SHARJAH, UNITED ARAB EMIRATES

Phone: +971.6 5578146 Fax: +971.6 5578156 E-mail : tufultrd@eim.ae

Cost: The kit price will not exce ed 773 USD (Price condition 2012) Availability: 7 days upon receipt of purchase order.EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 5 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. B. NECESSARY MATERIAL FOR EACH EQUIPMENT (1) Modification kit P/N: 25-898-9000 Valid for one Captain or First Officer seat. PART NUMBER Qty DESCRIPTION ET3-010-030-09 1 PLATE, INFORMATION 2510112299-20 1 SAMPLE, TENSILE TEST AN3-25A 1 SCREW, HEX. HEAD NAS1801-08-14 1 SCREW, HEX. HEAD NAS517-2-6 1 SCREW, CSK HEAD NAS1149F0363P 1 WASHER, TH 1.6MM NAS1149DN832K 1 WASHER, TH 0.8 MM (2) Consumable (Local Purchase) P/N DESIGNATION Qty SOURCE LOCTITE 241 SEALANT, ANAEROBIC AR F7121 MOLIKOTE ® Longterm W2 GREASE AR F7286
C. TOOLING Standard tooling.
3. OPERATING INSTRUCTIONS
A. PRELIMINARY STEPS The work of this Service Bulletin can be done in a certified repair shop or in the A/C. Refer to CMM 25-11-19 or 25-11-22 for help. (1) Move the seat to the upper position to get access to the lower face of seat base.
B. OPERATING PROCEDURE NOTE : Keep all parts. The exceptions are annotated in the procedure detailed below. Before disassembly, put marks on all the parts to help re-assembly and prevent errors.EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 6 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. (1) Test of horizontal electrical motion, refer to Fig. 1 (a) Apply power to the seat to be tested. (b) Press on the switch S8 to the rear direction (RWD), the seat must move to the rear direction. (c) Press on the switch S8 to the front direction (FWD), the seat must move to the front direction. (d) Cut off the power after the test.

WARNING : IF THE SEAT DOESN'T MOVE IN THE DESIRED DIRECTION, DO NOT DO THE INSPECTION. THAT CAN CAUSE DAMAGE TO THE SEAT. YOU MUST REPAIR THE SEAT, REFER TO THE APPLICABLE CMM.

TEST OF HORIZONTAL ELECTRICAL MOTION FIGURE 1EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 7 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. (2) Installation of tensile test sample, refer to Fig. 2 (a) Move the seat to the rear position with mechanical control. (b) Remove the screw (1) and discard it. NOTE : You can use an impact screwdriver to remove the screw (1). (c) Remove the screw (2) and the washer (3). (d) Clean the area with a cloth. (e) Install the tensile test sample (4) P/N: 2510112299-20 on the seat base with the screw (5) P/N: NAS1801-08-14 and the washer (6) P/N: NAS1149DN832K. Do not tighten the screw (5). (f) Move the seat with mechanical control in order to position the free hole of actuator in contact with the tensile test sample (4). (g) Install the screw (7) P/N: AN3-25A and the washer (8) P/N: NAS1149F0363P to attach the tensile test sample (4) on the actuator. (h) Tighten the screw (5) from 2,5 to 3 Nm (22 to 26 In.lbf) and screw (7) from 4 to 5 Nm (35 to 44In.lbf). (3) Testing of actuator, refer to Fig 3 WARNING : MAKE SURE THAT YOU PRESS THE SWITCH S8 TO THE REAR DIRECTION. YOU CAN DAMAGE THE TENSILE TEST SAMPLE AND THE ACTUATOR IF SWITCH IS ACTIVATED IN THE WRONG DIRECTION. (a) Apply power to the seat to be tested. (b) Press on the switch S8 to the rear direction (RWD) in order to break the tensile test sample by the actuator power. (c) Cut off the power after the test. (d) Test result:

− The tensile test sample is broken, the seat is serviceable.

− The tensile test sample is not broken, the actuator runs but the seat does not move, that show that the actuator is damaged .The seat is unserviceable.

In case of unserviceable seat, two possibilities:

1 Replace the seat by a serviceable one (tested in accordance with this SB).

2 Remove the seat from A/C and replace the actuator. (Refer to § (5)) (4) Removal of tensile test sample and close up, refer to Fig.4 (a) Remove the screw (1), the washer (2), the half part of tensile test sample (3). (b) Remove the screw (4), the washer (5), the half part of tensile test sample (6). (c) Install the new screw (7) P/N: NAS517-2-6. (d) Install the existing screw (8) with washer (9) on the actuator. (e) Discard the screws (1 and 4), the washers (2 and 5) and the tensile test sample parts (3 and 6).EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 8 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. INSTALLATION OF TENSILE TEST SAMPLE FIGURE 2 4 4 1 2 3

5 6

7 8EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 9 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. TESTING OF ACTUATOR FIGURE 3 Switch S8

TENSILE TEST SAMPLE BROKENEADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 10 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. REMOVAL OF TENSILE TEST SAMPLE AND CLOSE UP FIGURE 4 8 9 6 4 5

7 3

1 2EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 11 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. (5) Replacement of actuator, refer to Fig. 5 NOTE : Replacement must be done only if actuator is damaged. WARNING : MAKE SURE THAT POWER IS CUT OFF BEFORE ANY INTERVENTION ON SEAT. (a) Removal of actuator

1 Disconnect the connector X4 (1) from the actuator (2).

2 Removal of control cable

a For a captain seat
1 Remove the nut (3) and the screw (4).

2 Remove the nut (5), the washer (6), the screw (7) and the washer (8), remove the cable bracket (9).

b For a first officer seat
1 Remove the nut (18) from the cable (19).

3 Removal of actuator

a Remove the nut (10), the washer (11), the screw (12) and washer (13).

b Remove the screws (14) and the washers (15), remove the actuator (2).

4 Removal of actuator pinion and control cable lever

a Remove the screw (20) and remove the washer (21).

b Remove the needle bearing (22) and the inner bush (23) of needle bearing.

c Remove the pinion (24) from the actuator shaft (25).

d Keep the disc key (26) in place on the actuator shaft (25) with a piece of adhesive tape, tie cable, etc...

e Remove the elastic ring (27) and remove the control cable lever (17).EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 12 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. (b) Installation of new actuator

1 Installation of pinion and cable control lever on a new actuator

a Remove the protection on the actuator shaft (25), check that the disc key (26) is installed.

b Install the pinion (24) on the actuator shaft (25).

c Install the inner bush (23) of needle bearing on the actuator shaft (25).

d Install the needle bearing (22). Appl y grease MOLIKOTE long term W2.

e Install the washer (21) and the screw (20). Apply LOCTITE 241 on the screw (20).

f Install the cable control lever (17) on the actuator (2).

g Lock the cable control lever (17) with the elastic ring (27).

2 Installation of actuator

a Install the actuator (2) on the seat. Engage the pinion in the rack.

b Attach the actuator (2) with the screws (14) and the washers (15).

c Attach the actuator (2) with the screw (12), the washer (13), the washer (11) and the nut (10).

d Tighten the screws (12 and 14) from 2,5 to 3 Nm (22 to 26 In.lbf).

3 Installation of control cable

a For a captain seat
1 Install the cable bracket (9) on the actuator (2) with the screw (7), the washer (8), the washer (6) and the nut (5). Tighten the screw (7) from 2,5 to 3 Nm (22 to 26 In.lbf).

2 Install the screw (4) on the actuator lever (16) and on the control cable lever (17).
3 Install the nut (3) on the screw (4), adjust the nut (3) in order to get a minimum clearance.

b For a first officer seat
1 Install the nut (18) on the control cable lever (17).

2 Adjust the nut (18) in order to get a minimum clearance.

4 Connect the connector X4 (1) to the actuator (2).EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 13 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. View A

REPLACEMENT OF ACTUATOR FOR A CAPTAIN SEAT FIGURE 5 (SHEET 1 OF 3) 3

9 5 6 7 8 4

1

A 10 11 12 13 2 14 15 14 15

7 8 16

17EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 14 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. View B

REPLACEMENT OF ACTUATOR

FOR A FIRST OFFICER SEAT

FIGURE 5 (SHEET 2 OF 3) 1 2 18 19

14 15 14 15

10 11 12 13 10 11 12 13 10 11

B 14 15 17EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 15 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. REPLACEMENT OF ACTUATOR ACTUATOR PINION REMOVAL / INSTALLATION FIGURE 5 (SHEET 3 OF 3)

20

21

22

23

24

25

26

17 27EADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 16 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. C. IDENTIFICATION After application of this Inspection Service Bulletin, the seat is compliant with the directives of the inspection (Actuator tested or replaced) and must be identified. (1) Check on the seat if information plat e (1) P/N: ET3-010-030-09 is existing near the identification plate, if not bond a new information plate. (2) Write on the information plate (1) P/N: ET3-010-030-09 with indelible ink:

− The SB application date MMM DD/YY

− Write INSPECTED in the New P/N compartment.

− The reason: ISB 2510112-25-898 Applied

INFORMATION PLATE

IDENTIFICATION FIGURE 6 A ISB 2510112-25-898 applied

INSPECTED DATEEADS SOGERMA (F4643) Z.I. de l’arsenal CS. 60109 - 17303 ROCHEFORT CEDEX - FRANCE TEL : 33.5.46.82.84.84 - SITA Code : RCOSSCR FAX : 33.5.46.82.88.13 

# INSPECTION SERVICE BULLETIN

INITIAL ISSUE : APR 25/12 SB 2510112-25-898 PAGE : 17 This document is EADS SOGERMA property and can't be copied or transmitted without authorization. 4. INSPECTION REPORT SHEET

After application of ISB 2510112-25-898, please send us back a copy duly completed of this Inspection Report Sheet. (1) Customer identification



## Customer: Aircraft model: Aircraft MSN:

(2) Cockpit seat



## Seat P/N of Seat Seat S/N Captain 

# 2510112-__ - __

First Officer 

# 2510113-__ - __

(3) Customer remarks

(4) Please, date, sign and send to:

EADS SOGERMA Mr Alain CANIVET Product Support Department Z.I DE L'ARSENAL- C.S.60109 17303 ROCHEFORT CEDEX FRANCE Fax : 33.5.46.82.88.13 E-mail: alain.canivet@sogerma.eads.net Person in charge of SB application