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 the

aircraft 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.)

4 1 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

C

EM170SB540224A.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

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