NACELLES/PYLONS - INSTALLATION OF LOCK ASSEMBLY AT INBOARD AND OUTBOARD LOWER LINK FITTING 1. PLANNING INFORMATION A. SB EFFECTIVITY Aircraft affected: MODEL SN EMBRAER 190 ECJ 19000109, 19000140, 19000159, 19000177, 19000203, 19000225, 19000236, 19000243, 19000261, 19000278, 19000296, 19000307, 19000317, 19000362, 19000438, 19000453, 19000534, 19000559, and 19000571. In-production effectivity: EMBRAER 190 ECJ model aircraft SN 19000611 and on have an equivalent modification factory-incorporated. B. CONCURRENT REQUIREMENTS None. C. REASON (1) HISTORY Instances have been reported of the washer and nut loose in the outer shear pins installed on both LH and RH pylon outboard and inboard lower link fittings. During investigation, the washer under the retaining nut was found loose and could be spun by hand. Also the self-locking nut was found with low or no torque but with the cotter pin correctly installed on its place. In order to prevent the nut torque loss, the washer, castle nut, and cotter pin will be replaced with a lock washer, lock nut, and lockwire. 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 1 of 18 Copyright © 2012 by Embraer S.A. All rights reserved.(2) OBJECTIVE To replace the washers, nuts, and cotter pin that attach the pylons to the wings with a lock washer, a lock nut, and a lockwire. (3) EXPECTED BENEFITS This modification is aimed at avoiding nut torque loss and subsequently loss of the assembly redundancy. (4) REVISION HISTORY None. D. DESCRIPTION This Bulletin is divided in 02 PARTS, as follows:
PART I LH PYLON - LOCK ASSEMBLY INSTALLATION AT THE INBOARD / OUTBOARD LOWER LINK FITTINGS Applicable to: Refer to 1.A. SB EFFECTIVITY The modification described in PART I of this bulletin consists of replacing the washer, castle nut, and cotter pin of the inboard and outboard lower link fittings of the LH pylon, with a lock washer, lock nut, and lockwire. To do this, it is necessary to gain access to the LH pylon in zone 419 and remove skin fairings 419ADR and 419ACL.
PART II RH PYLON - LOCK ASSEMBLY INSTALLATION AT THE INBOARD / OUTBOARD LOWER LINK FITTINGS Applicable to: Refer to 1.A. SB EFFECTIVITY The modification described in PART II of this bulletin consists of replacing the washer, castle nut, and cotter pin of the inboard and outboard lower link fittings of the RH pylon, with a lock washer, lock nut, and lockwire. To do this, it is necessary to gain access to the RH pylon in zone 429 and remove skin fairings 429ADL and 429AER. 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 2 DATE: 20/Dec/2012 REVISION No.: Copyright © 2012 by Embraer S.A. All rights reserved.E. COMPLIANCE Embraer recommends that this bulletin be accomplished within the next 48 Month(s) inspection. F. APPROVAL The technical aspects of this Service Bulletin are approved by: Agência Nacional de Aviação Civil (ANAC). NOTE: If any aircraft listed in the SB effectivity has a modification or repair incorporated that is not of EMBRAER origin, and which affects the content of this Service Bulletin, the operator will take full responsibility for obtaining approval by a regulatory agency for any adaptation necessary before the incorporation of this Service Bulletin. G. ESTIMATED MANPOWER This estimate is for direct labor only, performed by experienced personnel, and does not include the time to plan, prepare, or inspect the work. It is assumed that all the tools, parts, and other means are readily available when necessary. This estimate does not include the sealant, paint, or adhesive curing time. (1) PART I - LH PYLON - LOCK ASSY INSTALLATION AT THE INBOARD / OUTBOARD LOWER LINK FITTINGS – Access opening: 0.5 man-hours. – Inspection: None. – Modification: 2.0 man-hours. – Access closure: 0.5 man-hours. – Test: None. 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 3 Copyright © 2012 by Embraer S.A. All rights reserved.(2) PART II - RH PYLON - LOCK ASSY INSTALLATION AT THE INBOARD / OUTBOARD LOWER LINK FITTINGS – Access opening: 0.5 man-hours. – Inspection: None. – Modification: 2.0 man-hours. – Access closure: 0.5 man-hours. – Test: None. H. WEIGHT AND BALANCE – Change in basic weight: + 0.299 lb (+ 0.136 kg). – Change in basic moment: + 199.41 lb.in (+ 2.3 kg.m). I. SOFTWARE ACCOMPLISHMENT SUMMARY None. J. REFERENCES AMM 190LIN/( ) Aircraft Maintenance Manual PART II - 06-43-00 - DIMENSIONS AND AREAS. AMM 190LIN/( ) Aircraft Maintenance Manual PART II - 20-00-00 - STANDARD PRACTICES-AIRFRAME. AMM 190LIN/( ) Aircraft Maintenance Manual PART II - 54-50-22 - NACELLES/PYLONS. K. OTHER PUBLICATIONS AFFECTED AIPC 190LIN/( ) Aircraft Illustrated Parts Catalog - 54-50-00 - NACELLES/PYLONS. 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 4 DATE: 20/Dec/2012 REVISION No.: Copyright © 2012 by Embraer S.A. All rights reserved.AMM 190LIN/( ) Aircraft Maintenance Manual PART II - 54-50-00 - NACELLES/PYLONS. 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 5 Copyright © 2012 by Embraer S.A. All rights reserved.2. MATERIAL INFORMATION A. MATERIAL - PRICE AND AVAILABILITY (1) MATERIAL AVAILABLE FROM EMBRAER The kit(s) below, required for the accomplishment of this bulletin, will be available from Embraer according to the commercial conditions defined in the item 2.C. MATERIAL NECESSARY FOR EACH AIRCRAFT of this service bulletin. The estimated delivery date will be provided by Embraer upon request. When ordering, specify SB 190LIN-53-0064 and Top Kit PN presented in Table below, as applicable.

REF TOP KIT PN Unit Price (US$) TOP KIT EFFECTIVITY
01 BSLIN5400040001 - PART I / Refer to 1.A. SB EFFECTIVITY
. 02 BSLIN5400040002 - PART II / Refer to 1.A. SB EFFECTIVITY

. (2) MATERIAL AVAILABLE FROM OTHER VENDORS None. B. INDUSTRY SUPPORT INFORMATION (1) WARRANTY COVERAGE (a) Parts The SB parts will be provided at no charge. (b) Labor 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 6 DATE: 20/Dec/2012 REVISION No.: Copyright © 2012 by Embraer S.A. All rights reserved.Will be reimbursed by Embraer to the limit defined in the item 1.G. ESTIMATED MANPOWER if performed at an Embraer-Authorized Service Center. (c) Expiration The terms expressed in the warranty coverage will be valid until the aircraft logs 3,000 Flight Hour(s) or for 60 Month(s) after the SB issue date, whichever occurs first. C. MATERIAL NECESSARY FOR EACH AIRCRAFT When applicable, the use of alternative or similar parts in place of the one specified in the kits is allowable, provided that these alternative or similar parts are approved by Embraer as indicated in the related Embraer Technical Publications or through a formal Embraer communication channel. The necessary expendable or consumable parts presented in the AMM Tasks referred to in this bulletin should be procured from the operator’s inventories or ordered as spares. The complementary information, when necessary, is presented as Notes in the respective Table. For ordering information and Top Kit effectivity refer to section 2.A. MATERIAL - PRICE AND AVAILABILITY of this Bulletin. (1) TOP KITS AND KITS Kit Summary: Top Kit Composition (Kit PN / Quantity) Top Kit PN 191-28251-601 191-28252-601 BSLIN5400040001 01 - BSLIN5400040002 - 01 (a) 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 7 Copyright © 2012 by Embraer S.A. All rights reserved.Kit PN 191-28251-601 - Installation of Lock Assembly at Inboard and Outboard LH Lower Link Fitting NEW PN DESCRIPTION OLD PN QTY SUP QTY RQD DISP/ Notes

191-28248-001 Outboard Lock washer NAS1149C1490R 01 01 3 191-28249-001 Inboard Lock washer NAS1149C1490R 01 01 3 191-28250-401 ′′U′′ Profile - 02 02 2 MS20995C32 Lock wire - 300 mm 300 mm 2 NAS1802-04-5 Screw - 05 04 2 NAS509-14C Lock nut PE22072L14 02 02 3 (b) Kit PN 191-28252-601 - Installation of Lock Assembly at Inboard and Outboard RH Lower Link Fitting NEW PN DESCRIPTION OLD PN QTY SUP QTY RQD DISP/ Notes

191-28248-002 Outboard Lock washer NAS1149C1490R 01 01 3 191-28249-001 Inboard Lock washer NAS1149C1490R 01 01 3 191-28250-401 ′′U′′ Profile - 02 02 2 MS20995C32 Lock wire - 300 mm 300 mm 2 NAS1802-04-5 Screw - 05 04 2 NAS509-14C Lock nut PE22072L14 02 02 3 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 8 DATE: 20/Dec/2012 REVISION No.: Copyright © 2012 by Embraer S.A. All rights reserved.(2) MATERIAL TO BE PROCURED (a) Parts None. (b) Consumable Materials The material below or equivalent, required for the accomplishment of this bulletin, should be procured from the operator’s inventories or from a local supplier. Applicable to 1.A. SB EFFECTIVITY NEW PN DESCRIPTION OLD PN QTY DISP/ Notes F-925 Sealant - AR 6/ [1] ARDROX AV-15 Corrosion Inhibiting Compound - AR 6/ [2] 1. Yellow Torque Seal (MEP 09-068) F-925 2. Corrosion Inhibiting Compound (MEP_10-063) ARDROX AV-15 DISPOSITION: 2 = Incorporate part bearing NEW PN 3 = Replace part bearing OLD PN with part bearing NEW PN 6 = Apply as required QUANTITY: AR = As Required D. MATERIAL NECESSARY FOR EACH SPARE None. E. REIDENTIFIED PARTS None. 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 9 Copyright © 2012 by Embraer S.A. All rights reserved.F. TOOLING - PRICE AND AVAILABILITY Whenever required, the necessary tooling presented in the AMM Tasks referred to in this bulletin, should be procured from the operator’s inventories or ordered as spares. 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 10 DATE: 20/Dec/2012 REVISION No.: Copyright © 2012 by Embraer S.A. All rights reserved.3. ACCOMPLISHMENT INSTRUCTIONS NOTE: 1) Obey all of the WARNINGS and CAUTIONS included in the referenced manuals and procedures. 2) The Manuals and other documents are referred to by acronyms or using a simplified form. Refer to section 1.J. REFERENCES for a more complete definition. 3) This Service Bulletin effectivity is divided in 02 PARTS. The SB PARTS are featured to allow their independent accomplishment. The steps below outline the general accomplishment instructions. The detailed sequence is included in the respective figure, when necessary. A. Make sure that the aircraft is safe for maintenance. Refer to AMM TASK 20-00-00-910 -801-A/200 - Aircraft Maintenance Safety Procedures - Standard Procedures. B. PART I - LH PYLON - LOCK ASSY INSTALLATION AT THE INBOARD / OUTBOARD LOWER LINK FITTINGS (1) Remove the pylon inboard side fairing 419ADR (skin 6) and pylon outboard side fairing 419ACL (skin 5) as per instructions given in AMM TASK 54-50-22-000-801 -A/400 - Pylon Side Fairings - Removal. Refer to AMM TASK 06-43-00-800-801 -A/100 - Powerplant and Pylon Access Doors and Panels and Figure 1
. (2) Carry out the replacement of washers, nuts, and cotter pins with lock washers, lock nuts and lockwire of lower link fittings. Refer to Figure 1
. (3) Reinstall the pylon inboard side fairing 419ADR (skin 6) and pylon outboard side fairing 419ACL (skin 5) as per instructions given in AMM TASK 54-50-22-400-801 -A/400 - Pylon Side Fairings - Installation. Refer to AMM TASK 06-43-00-800-801 -A/100 - Powerplant and Pylon Access Doors and Panels and Figure 1
. C. PART II - RH PYLON - LOCK ASSY INSTALLATION AT THE INBOARD / OUTBOARD LOWER LINK FITTINGS (1) Remove the pylon inboard side fairing 429ADL (skin 6) and pylon outboard side fairing 429AER (skin 5) as per instructions given in AMM TASK 54-50-22-000-801 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 11 Copyright © 2012 by Embraer S.A. All rights reserved.-A/400 - Pylon Side Fairings - Removal. Refer to AMM TASK 06-43-00-800-801 -A/100 - Powerplant and Pylon Access Doors and Panels and Figure 1
. (2) Carry out the replacement of washers, nuts, and cotter pins with lock washers, lock nuts and lockwire of lower link fittings. Refer to Figure 1
. (3) Reinstall the pylon inboard side fairing 429ADL (skin 6) and pylon outboard side fairing 429AER (skin 5) as per instructions given in AMM TASK 54-50-22-400-801 -A/400 - Pylon Side Fairings - Installation. Refer to AMM TASK 06-43-00-800-801 -A/100 - Powerplant and Pylon Access Doors and Panels and Figure 1
. D. Restore the aircraft to normal. E. Enter the accomplishment of PART I and/or PART II of this bulletin in the applicable documents. NOTE: 1) Please inform us by e-mail reliability.executive@embraer.com.br of theaircraft manufacturer serial number and the SB incorporation date, specifying the SB Part(s) incorporated or whether the whole SB has been incorporated. This will enable Embraer to consider your aircraft configuration when providing future modifications. 2) To formally inform that the SB has been incorporated fleet-wide or that the SB will not be incorporated, so that Embraer can update the affected technical publications, use the “Service Bulletin Full-Fleet Incorporation Report” form, which is available on the Flyembraer portal (http://www.flyembraer.com). 3) Use the attached “Service Bulletin Evaluation” form to send us your comments regarding this SB. Your feedback will be much appreciated as an aid for us to improve the quality of the SBs. 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 12 DATE: 20/Dec/2012 REVISION No.: Copyright © 2012 by Embraer S.A. All rights reserved.1. Remove the lock assembly from the lower link outboard fitting, as follows: (a) Remove and discard the cotter pin, castle nut PN PE22072L14 and washer PN NAS1149C1490R (01 position each). Refer to Detail B (PRE-MOD)

. 2. Install the new lock assembly to the lower link outboard fitting, as follows: (a) Position lock washer PN 191-28248-001 (LH Pylon) or PN 191-28248-002 (RH Pylon) as applicable, and lock nut PN NAS509-14C. Refer to Detail B (POST -MOD)

. (b) Apply a toque of 1,000 lb.in to the lock nut. After that, adjust the lock nut position as indicated at Detail B (POST-MOD) and Detail D
. 1 The final torque must not exceed 2,000 lb.in. 2 With a pressure plier, fix the lock washer at the pylon structure to avoid rotation and consequential damages while torque is applied. (c) Install ′′U′′ profile PN 191-28250-401 by positioning and tightening screw PN NAS1802-04-5 (02 positions). Refer to Detail B (POST-MOD)

. (d) Install lockwire PN MS20995C32. Refer to Detail B (POST-MOD)

.(e) Apply Yellow Torque Seal (MEP 09-068) F-925 and Corrosion Inhibiting Compound (MEP_10-063) ARDROX AV-15 . 3. Remove the lock assembly from the lower link inboard fitting, as follows: (a) Remove and discard the cotter pin, castle nut PN PE22072L14, and washer PN NAS1149C1490R (01 position each). Refer to Detail C (PRE-MOD)

. 4. Install new lock assembly at the lower link inboard fitting, as follows: (a) Position lock washer PN 191-28249-001 and lock nut PN NAS509-14C (01 position each). Refer to Detail C (POST-MOD)

. (b) Apply a toque of 1,000 lb.in to the lock nut. After that, adjust the lock nut position 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 13 FIGURE 1 - REPLACEMENT OF LOCK ASSEMBLY AT LOWER LINK FITTING (SHEET 01 OF 06)

Copyright © 2012 by Embraer S.A. All rights reserved.as indicated at Detail C (POST-MOD) and Detail E
. 1 The final torque must not exceed 2,000 lb.in. 2 With a pressure plier, fix the lock washer at the pylon structure to avoid rotation, and consequential damages, while torque is applied. (c) Install ′′U′′ profile PN 191-28250-401 by positioning and tightening screw PN NAS1802-04-5 (02 positions). Refer to Detail C (POST-MOD)

. (d) Install lockwire PN MS20995C32. Refer to Detail C (POST-MOD)

.(e) Apply Yellow Torque Seal (MEP 09-068) F-925 and Corrosion Inhibiting Compound (MEP_10-063) ARDROX AV-15 . 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 14 DATE: 20/Dec/2012 REVISION No.: FIGURE 1 - REPLACEMENT OF LOCK ASSEMBLY AT LOWER LINK FITTING (SHEET 02 OF 06)

Copyright © 2012 by Embraer S.A. All rights reserved.

### A ZONES

419 429



### B



### A LH PYLON SHOWN 

### C

LH PYLON (REF.) PYLON FITTINGS (REF.)EM170SB540222A.DGN

OUTBOARD PYLON FAIRING 419ACL (SKIN 5) − LH 429AER (SKIN 5) − RH (REF.) INBOARD PYLON FAIRING 419ADR (SKIN 6) − LH 429ADL (SKIN 6) − RH (REF.) 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 15 FIGURE 1 - REPLACEMENT OF LOCK ASSEMBLY AT LOWER LINK FITTING (SHEET 03 OF 06)

Copyright © 2012 by Embraer S.A. All rights reserved.POST − MOD PRE − MOD 

### B

B

TORQUE: 112.98 − 225.97 N.m (1000 − 2000 lb.in) 2 1 APPLY YELLOW TORQUE SEAL (MEP 09−068) F−925 3 APPLY CORROSION INHIBITTING COMPOUND (MEP_10−063) ANDROX AV−15 1 1 1

CASTLE NUT (REMOVE AND DISCARD) WASHER (REMOVE AND DISCARD)

COTTER PIN (REMOVE AND DISCARD)

2 SCREW PN NAS1802−04−5 (02 POSITIONS) (INSTALL)

2

2 2 1 2 3 2

LOCK NUT PN NAS509−14C (INSTALL) PYLON FITTINGS (REF.) PYLON FITTINGS (REF.)

LOCK WASHER PN 191−28248−001(LH) OR PN 191−28248−002 (RH) (INSTALL)EM170SB540223A.DGN 

### D "U" PROFILE PN 191−28250−401 (INSTALL)

LOCKWIRE PN MS20995C32 (INSTALL) 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 16 DATE: 20/Dec/2012 REVISION No.: FIGURE 1 - REPLACEMENT OF LOCK ASSEMBLY AT LOWER LINK FITTING (SHEET 04 OF 06)

Copyright © 2012 by Embraer S.A. All rights reserved.PRE − MOD 3

3 3

PYLON FITTINGS (REF.)

TORQUE: 112.98 − 225.97 N.m (1000 − 2000 lb.in)

2 1 APPLY YELLOW TORQUE SEAL (MEP 09−068) F−925 3 APPLY CORROSION INHIBITTING COMPOUND (MEP_10−063) ANDROX AV−15 PYLON FITTINGS (REF.) 1 4 2 3 LOCK NUT PN NAS509−14C (INSTALL) 4

4

LOCK WASHER PN 191−28249−001 (INSTALL)

4

SCREW PN NAS1802−04−5 (02 POSITIONS) (INSTALL)

4

POST − MOD 

### C

CEM170SB540224A.DGN COTTER PIN (REMOVE AND DISCARD)

CASTLE NUT (REMOVE AND DISCARD)

WASHER (REMOVE AND DISCARD)



### E

"U" PROFILE PN 191−28250−401 (INSTALL) LOCKWIRE PN MS20995C32 (INSTALL) 

# SERVICE BULLETIN

DATE: 20/Dec/2012 REVISION No.: SB No.: 190LIN-54-0004 PAGE: 17 FIGURE 1 - REPLACEMENT OF LOCK ASSEMBLY AT LOWER LINK FITTING (SHEET 05 OF 06)

Copyright © 2012 by Embraer S.A. All rights reserved.EM170SB540281A.DGN 

### D D ACCEPTABLE CONDITION 30° (REF.) PARALLEL 22° (REF.)



### E E ACCEPTABLE CONDITION 30° (REF.) PARALLEL

22° (REF.) NOMINAL CONDITION

NOMINAL CONDITION 2

4 2

4 

# SERVICE BULLETIN

SB No.: 190LIN-54-0004 PAGE: 18 DATE: 20/Dec/2012 REVISION No.: FIGURE 1 - REPLACEMENT OF LOCK ASSEMBLY AT LOWER LINK FITTING (SHEET 06 OF 06)

Copyright © 2012 by Embraer S.A. All rights reserved.

### SERVICE BULLETIN EVALUATION
THE PURPOSE OF THIS FORM IS TO COLLECT DATA THAT WILL BE USED TO IMPROVE THE QUALITY OF OUR SERVICE BULLETINS. PLEASE FILL IN FORM AND RETURN IT TO: EMBRAER - EMPRESA BRASILEIRA DE AERONÁUTICA S.A. EFTC - SERVICE BULLETIN ENGINEERING AV. BRIGADEIRO FARIA LIMA, 2170 SÃO JOSÉ DOS CAMPOS - SP - 12227-901 BRASIL Fax: + 55 12 3927-6600 (ext. 1624) e-mail: fleet.reliability@embraer.com.br S.B. Title: S.B.: (Number / Rev.) Operator: SB Implementation Report Aircraft Serial Number or Registration Number: Incorporation Date: Aircraft Flight Hours: Aircraft Landings:
POST-ACCOMPLISHMENT EVALUATION: (Check applicable squares below) ESTIMATED MANPOWER: [ ] OK [ ] NOT OK (Explain Below) MATERIAL & KITS: [ ] OK [ ] NOT OK (Explain Below) ACCOMPLISHMENT INSTRUCTIONS: [ ] OK [ ] NOT OK (Explain Below) FIGURES: [ ] OK [ ] NOT OK (Explain Below) SB GENERAL EVALUATION: [ ] OK [ ] NOT OK (Explain Below) COMMENTS: (Bulletin quality/ Difficulties found at the time of incorporation/ Suggested improvements/ Other)

Organization: Fax: Phone: E-mail: Address: Prepared by:(Name/Title) Date:

Copyright © 2012 by Embraer S.A. All rights reserved.EMPRESA BRASILEIRA DE AERONÁUTICA S/A - SÃO JOSÉ DOS CAMPOS - SP 

# SERVICE NEWSLETTER

SNL 145-31-0011 DATE: 26/Aug/04 PAGE: 2 of 1 CHANGE No.: __ - __/___/__