# Embraer Service Bulletin 190-54-0013

Copy: No revision named ("SB190-54-0013"), 20 pages: PDF https://openairdocs.org/files/sha256/3c/15/3c156323b4574c188f71c481b6895f7cfbad5793f3782c4995fc9780218f7bc9; text https://openairdocs.org/service-documents/embraer/sb-190-54-0013/file/3c156323b457.md. Rights: © Embraer S.A. Filed by the FAA in regulations.gov docket FAA-2014-0531; AD 2014-16-16 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Embraer](https://openairdocs.org/service-documents/embraer.md)
- Type: Service bulletin (Service Bulletin)
- Number: 190-54-0013
- Page: https://openairdocs.org/service-documents/embraer/sb-190-54-0013

## ADs that cite it (2) (OpenAirDocs)

Newest first, with the revision each names, as OpenAirDocs read it from the AD's text.

- [AD 2021-25-02](https://openairdocs.org/ad/2021-25-02.md), effective Jan 20, 2022: No revision named
- [AD 2014-16-16](https://openairdocs.org/ad/2014-16-16.md), effective Sep 2, 2014: No revision named

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/embraer/sb-190-54-0013/proposed.md).

## Text (20 pages)

Rights: © Embraer S.A. Filed by the FAA in regulations.gov docket FAA-2014-0531; AD 2014-16-16 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

NACELLES/PYLONS - INSTALLATION OF LOCK ASSY AT LOWER LINK FITTING
INBOARD AND OUTBOARD
1. PLANNING INFORMATION
A. SB EFFECTIVITY
Aircraft affected:
MODEL SN
Embraer 190( ) and 195( ) 19000002, 19000004 thru 19000108, 19000110 thru
19000139, 19000141 thru 19000158, 19000160 thru
19000176, 19000178 thru 19000202, 19000204 thru
19000224, 19000226 thru 19000235, 19000237 thru
19000242, 19000244 thru 19000260, 19000262 thru
19000277, 19000279 thru 19000295, 19000297 thru
19000306, 19000308 thru 19000316, 19000318 thru
19000361, 19000363 thru 19000437, 19000439 thru
19000452, 19000454 thru 19000466, 19000468 thru
19000484, 19000486 thru 19000525, 19000527 thru
19000533, 19000535 thru 19000558, 19000560 thru
19000570, and 19000572 thru 19000585.
Affected component:
None.
In-production effectivity:
Embraer 190( ) and 195( ) model aircraft SN 19000485, 19000586 and on, have an
equivalent modification factory-incorporated.
B. CONCURRENT REQUIREMENTS
None.
SERVICE BULLETIN
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 1 of 17
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 2

C. REASON
(1) HISTORY
Instances have been reported concerning 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 verified loose which
could be spun freely by hand. Also the self locking nut was found with low or no
torque but with the cotter pin correctly installed on the 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 lock wire.
(2) OBJECTIVE
To replace the washers, nuts, and cotter pin attaching the pylons to the wings by a
lock washer, a lock nut, and a lock wire.
(3) EXPECTED BENEFITS
This modification is aimed to avoid nut torque loosing and subsequently loss of the
assembly redundancy.
(4) REVISION HISTORY
None.
D. DESCRIPTION
This Bulletin is divided into 02 PARTS, as follows:
PART I Installation of Lock Assy at Lower Link Fitting Inboard and Outboard LH
Applicable 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 LH lower link fitting by a lock
washer, lock nut, and lock wire.
SERVICE BULLETIN
SB No.: 190-54-0013
PAGE: 2
DATE: 27/Nov/2012
REVISION No.:
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 3

To do this, it is necessary to gain access to the LH pylon at zone 419 and remove skin
fairing.
PART II Installation of Lock Assy at Lower Link Fitting Inboard and Outboard RH
Applicable to: 1.A. SB EFFECTIVITY
The modification described in PART II of this bulletin consists of replacing the washer and
castle nut of the inboard and outboard RH lower link fitting by a lock washer, lock nut, and
lock wire.
To do this, it is necessary to gain access to the RH pylon at zone 429 and remove skin
fairing.
E. COMPLIANCE
(1) APPLICABLE TO PART I
Embraer recommends that PART I of this bulletin be accomplished within the next
3,000 Flight Hours (FH).
(2) APPLICABLE TO PART II
Embraer recommends that PART II of this bulletin be accomplished within the next
3,000 Flight Hours (FH).
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.
SERVICE BULLETIN
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 3
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 4

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) APPLICABLE TO PART I
– Access opening: 0.5 man-hours.
– Inspection: None.
– Modification: 2.0 man-hours.
– Access closure: 0.5 man-hours.
– Test: None.
(2) APPLICABLE TO PART II
– 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
None.
I. SOFTWARE ACCOMPLISHMENT SUMMARY
None.
SERVICE BULLETIN
SB No.: 190-54-0013
PAGE: 4
DATE: 27/Nov/2012
REVISION No.:
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 5

J. REFERENCES
AMM 190/( ) Aircraft Maintenance Manual PART II - 20-00-00 - STANDARD
PRACTICES-AIRFRAME.
AMM 190/( ) Aircraft Maintenance Manual PART II - 54-50-22 -
NACELLES/PYLONS.
K. OTHER PUBLICATIONS AFFECTED
AIPC 190/( ) Aircraft Illustrated Parts Catalog - 54-50-00 and 54-50-02 -
NACELLES/PYLONS.
AMM 190/( ) Aircraft Maintenance Manual PART II - 54-50-23 -
NACELLES/PYLONS.
SERVICE BULLETIN
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 5
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 6

2. MATERIAL INFORMATION
A. MATERIAL - PRICE AND AVAILABILITY
(1) MATERIAL AVAILABLE FROM EMBRAER
The kit below required for the accomplishment of this bulletin will be available from
Embraer at no charge to the operator during a period of 24 months after the original
release date of this service bulletin.
The estimated delivery date will be provided by Embraer upon request.
When ordering, specify SB 190-54-0013 and Top Kits PN presented in Table below,
as applicable.
REF TOP KIT PN
Unit
Price
(US$)
TOP KIT EFFECTIVITY
01 BS1905400130001 538.93 1.A. SB EFFECTIVITY
02 BS1905400130002 538.94 1.A. SB EFFECTIVITY
(2) MATERIAL AVAILABLE FROM OTHER VENDORS
None.
B. INDUSTRY SUPPORT INFORMATION
None.
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.
SERVICE BULLETIN
SB No.: 190-54-0013
PAGE: 6
DATE: 27/Nov/2012
REVISION No.:
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 7

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
BS1905400130001 01 -
BS1905400130002 - 01
(a)
Kit PN 191-28251-601 - Installation of Lock Assy at Inboard and Outboard LH
Lower Link Fitting
NEW PN DESCRIPTION OLD PN QTYSUP QTYRQD 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 Profile ″U″ -0 2 0 2 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)
SERVICE BULLETIN
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 7
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 8

Kit PN 191-28252-601 - Installation of Lock Assy at Inboard and Outboard RH
Lower Link Fitting
NEW PN DESCRIPTION OLD PN QTYSUP QTYRQD DISP/Notes
191-28248-002 Outboard Lockwasher NAS1149C1490R 01 01 3
191-28249-001 Inboard Lock washer NAS1149C1490R 01 01 3
191-28250-401 Profile ″U″ -0 2 0 2 2
MS20995C32 Lock wire - 300
mm
300
mm 2
NAS1802-04-5 Screw - 05 04 2
NAS509-14C Lock nut PE22072L14 02 02 3
(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-YELLOW
TORQUE SEAL
Sealant - AR 6/ [1]
1. YellowTorque Seal (MEP 09-068) F-925
SERVICE BULLETIN
SB No.: 190-54-0013
PAGE: 8
DATE: 27/Nov/2012
REVISION No.:
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 9

Applicable to 1.A. SB EFFECTIVITY
NEW PN DESCRIPTION OLD PN QTY DISP/Notes
ARDROX AV-15 Corrosion InhibitingCompound -A R 6/ [1]
1. 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.
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
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 9
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 10

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 into 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 – Installation of Lock Assy at LH lower Inboard and Outboard Link Fitting
(1) Remove pylon side fairing by loosening screws. Refer to Figure 1 and AMM TASK
54-50-22-000-801-A/400 - Pylon Side Fairings - Removal.
NOTE: Skin 5 assy is applicable to outboard side.
Skin 6 assy is applicable to inboard side.
(2) Carry out the replacement of washers, nuts, and cotter pins by lock washers, lock
nuts and lock wire of lower link fittings. Refer to Figure 1.
(3) Reinstall pylon side fairings. Refer to Figure 1 and AMM TASK 54-50-22-400-801-
A/400 - Pylon Side Fairings - Installation.
C. PART II – Installation of Lock Assy at RH lower Inboard and Outboard Link Fitting
(1) Remove pylon side fairing by loosening screws. Refer to Figure 1 and AMM TASK
54-50-22-000-801-A/400 - Pylon Side Fairings - Removal.
NOTE: Skin 5 assy is applicable to outboard side.
Skin 6 assy is applicable to inboard side.
SERVICE BULLETIN
SB No.: 190-54-0013
PAGE: 10
DATE: 27/Nov/2012
REVISION No.:
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 11

(2) Carry out the replacement of washers, nuts, and cotter pins by lock washers, lock
nuts and lock wire of lower link fittings. Refer to Figure 1.
(3) Reinstall pylon side fairings. Refer to Figure 1 and AMM TASK 54-50-22-400-801-
A/400 - Pylon Side Fairings - Installation.
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 fleet.reliability@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
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 11
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 12

1. Remove lock assy at lower link outboard fitting, as follows:
(a) Remove and discard cotter pin (01 position), castle nut PN PE22072L14 (01
position), and washer PN NAS1149C1490R (01 position). Refer to Detail B
Pre-mod.
2. Install new lock assy at lower link outboard fitting, as follows:
(a) Position lock washer PN 191-28248-001 (LH) or PN 191-28248-002 (RH) (01
position) as applicable and lock nut PN NAS509-14C (01 position).
(b) Apply a toque of 1,000 lb.in at lock nut. After that, adjust the lock nut position as
indicated at Detail B Post-mod and Detail D.
NOTE: The final torque must not exceed 2,000 lb.in.
NOTE: With pressure plier fix the lock washer at pylon structure to avoid rotation,
and consequential damages, while torque is applied.
(c) Install profile ″U″ PN 191-28250-401 (01 position) by positioning and tightening the
screw PN NAS1802-04-5 (02 positions). Refer to Detail B Post-mod.
(d) Install lock wire PN MS20995C32. Refer to Detail B Post-mod.
(e) Apply Yellow Torque Seal (MEP 09-068) F-925 and Corrosion Inhibiting Com-
pound (MEP_10-063) ARDROX AV-15 .
3. Remove lock assy at lower link inboard fitting, as follows:
(a) Remove and discard cotter pin (01 position), castle nut PN PE22072L14 (01
position), and washer PN NAS1149C1490R (01 position). Refer to Detail C
Pre-mod.
4. Install new lock assy at lower link inboard fitting, as follows:
(a) Position lock washer PN 191-28249-001 (01 positon) and lock nut PN NAS509-14C
(01 position).
SERVICE BULLETIN
SB No.: 190-54-0013
PAGE: 12
DATE: 27/Nov/2012
REVISION No.:
FIGURE 1 - REPLACEMENT OF LOCK ASSY AT LOWER LINK FITTING
(SHEET 01 OF 06)
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 13

(b) Apply a toque of 1,000 lb.in at lock nut. After that, adjust the lock nut position as
indicated at Detail C Post-mod and Detail E.
NOTE: The final torque must not exceed 2,000 lb.in.
NOTE: With pressure plier fix the lock washer at pylon structure to avoid rotation,
and consequential damages, while torque is applied.
(c) Install profile ″U″ PN 191-28250-401 (01 position) by positioning and tightening the
screw PN NAS1802-04-5 (02 positions). Refer to Detail C Post-mod.
(d) Install lock wire PN MS20995C32. Refer to Detail C Post-mod.
(e) Apply Yellow Torque Seal (MEP 09-068) F-925 and Corrosion Inhibiting Com-
pound (MEP_10-063) ARDROX AV-15 .
SERVICE BULLETIN
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 13
FIGURE 1 - REPLACEMENT OF LOCK ASSY AT LOWER LINK FITTING
(SHEET 02 OF 06)
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 14

EM170SB540197A.DGN
A
ZONES
419
429
B
A
LH PYLON SHOWN
C
LH PYLON
(REF.)
PYLON FITTINGS
(REF.)
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
SB No.: 190-54-0013
PAGE: 14
DATE: 27/Nov/2012
REVISION No.:
FIGURE 1 - REPLACEMENT OF LOCK ASSY AT LOWER LINK FITTING
(SHEET 03 OF 06)
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 15

EM170SB540198A.DGN
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
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 12 3
2
LOCK NUT
PN NAS509−14C
(INSTALL)
LOCK WIRE
PN MS20995C32
(INSTALL)
PROFILE "U"
PN 191−28250−401
(INSTALL)
PYLON FITTINGS
(REF.)
PYLON FITTINGS
(REF.)
LOCK WASHER
PN 191−28248−001(LH) OR
PN 191−28248−002 (RH)
(INSTALL)
APPLY CORROSION INHIBITING COMPOUND (MEP_10−063) ANDROX AV−15
D
SERVICE BULLETIN
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 15
FIGURE 1 - REPLACEMENT OF LOCK ASSY AT LOWER LINK FITTING
(SHEET 04 OF 06)
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 16

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
PYLON FITTINGS
(REF.)
14 2 3
LOCK NUT
PN NAS509−14C
(INSTALL)4
LOCK WIRE
PN MS20995C32
(INSTALL)
PROFILE "U"
PN 191−28250−401
(INSTALL)
4
LOCK WASHER
PN 191−28249−001
(INSTALL)
4
SCREW
PN NAS1802−04−5
(02 POSITIONS)
(INSTALL)
4
POST − MOD
C
C
COTTER PIN
(REMOVE AND DISCARD)
CASTLE NUT
(REMOVE AND DISCARD)
WASHER
(REMOVE AND DISCARD)
APPLY CORROSION INHIBITING COMPOUND (MEP_10−063) ANDROX AV−15
E
EM170SB540199A.DGN
SERVICE BULLETIN
SB No.: 190-54-0013
PAGE: 16
DATE: 27/Nov/2012
REVISION No.:
FIGURE 1 - REPLACEMENT OF LOCK ASSY AT LOWER LINK FITTING
(SHEET 05 OF 06)
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 17

DD
ACCEPTABLE CONDITION
30°
(REF.)
PARALLEL
22°
(REF.)
EE
ACCEPTABLE CONDITION
30°
(REF.)
PARALLEL
22°
(REF.)
EM170SB540280A.DGN
NOMINAL CONDITION
NOMINAL CONDITION
SERVICE BULLETIN
DATE: 27/Nov/2012
REVISION No.:
SB No.: 190-54-0013
PAGE: 17
FIGURE 1 - REPLACEMENT OF LOCK ASSY AT LOWER LINK FITTING
(SHEET 06 OF 06)
Copyright © 2012 by Embraer S.A. All rights reserved.

### Page 18

(No text on this page.)

### Page 19

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.

### Page 20

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