SB 601R---27---160

Page 1 of 1

Oct 03/2012

SERVICE BULLETIN

REVISION TRANSMITTAL SHEET

CL ---600 ---2B19 Canadair Regional Jet (CRJ) Aircraft

SERVICE BULLETIN 601R ---27 ---160

SUBJECT: Flight Controls --- Horizontal Stabilizer Trim Actuator (HSTA) ---

Serialization of the HSTA Pins and Trunnions

This page transmits:

Revision A of Service Bulletin 601R --- 27 --- 160,

pages 1 thru 20, dated Oct 03/2012.

The changes in this revision have no effect on aircraft that have

incorporated a previous issue of this service bulletin.

Reason:

Revised Planning Information, paragraph 1., to:

Remove aircraft serial numbers 8114 thru 8999 from the effectivity.

Revised Accomplishment Instructions, paragraph 2., to:

Add indelible ink as an alternate identification method to the vibro-peening.

Add steps for the installation of new trunnions.

This revision also includes small editorial changes that do not have an effect on the technical

content.

Instructions:

Discard the copy of Service Bulletin 601R --- 27 --- 160, dated Sep 29/2011. Replace with the

copy attached.

Service Bulletin History:

Initial issue, dated Sep 29/2011.

1
Page 1 of 20

Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

SERVICE BULLETIN

Technical

Publications

THIS SERVICE BULLETIN IS SENT TO EACH OPERATOR. IF THE OPERATOR HAS LEASED

HAS SOLD AIRCRAFT OR TRANSFERRED SPARES IN THE LAST SIX MONTHS, THIS SERVICE

BULLETIN MUST BE SENT TO THE NEW OWNER, UNLESS CONFIRMATION WAS RECEIVED

THAT BOMBARDIER COMMERCIAL AIRCRAFT HAS INCLUDED THE NEW OPERATOR

AIRCRAFT, THIS SERVICE BULLETIN MUST BE SENT TO THE LESSEE. IF THE OPERATOR

ON THE DISTRIBUTION LIST.

ATA SYSTEM: 27 ---42 NUMBER: 601R ---27 ---160

SUBJECT: Flight Controls --- Horizontal Stabilizer Trim Actuator (HSTA) ---

Serialization of the HSTA Pins and Trunnions

1. PLANNING INFORMATION

A. Effectivity

(1) Aircraft Affected:

Service Bulletin: CL ---600---2B19 aircraft with the components that follow

installed:

Part number:

600---92383---5, 600---92383---7, 600---92384---5,

600---92384---7, 601R92309---1, 601R92310---1,

601R92386---1

Installed at time of

delivery on aircraft

with serial numbers:

7003---7067, 7069---7990, 8000 thru 8113.

Spares:

It is necessary to give a serial number and change the

identification of all spare parts as shown in this service

bulletin.

All CL ---600---2B19

If parts listed above are installed, but were not identified at

the time of aircraft delivery, on the same or on a different

aircraft model, it is necessary to incorporate this service

bulletin.
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

Production: This change will be incorporated before delivery on Aircraft

Serial Numbers 8114 and subsequent.

NOTE: The instructions in this service bulletin are only applicable to the

systems and parts installed at the time of delivery of the aircraft or as

changed by Bombardier Service Bulletins. Before you do this

bulletin, examine all STC, STA or equivalent action changes to make

sure you can complete this bulletin.

B. Reason

(1) Condition

The pins and the trunnions of the HSTA are not serialized. Therefore, it is not

possible to keep a record of the life of the pins and the trunnions installed on

the HSTA.

(2) Evidence

None.

(3) Objective/Benefit

This service bulletin gives the procedure to serialize the pins and the

trunnions on the attachments of the HSTA.

Serialization of the pins and the trunnions, on the attachments of the HSTA,

will give traceability and service history to agree with Federal Aviation

Regulation FAR 25.1529.

C. Description

Access panels are removed. Circuits breakers are opened. The HSTA is removed.

The pins and the trunnions on the HSTA are serialized and their part numbers are

changed. The HSTA is installed. Return-to-service tests are done.

D. Compliance

Recommended Service Bulletin.

Bombardier recommends that this service bulletin be done no more than 5000

flight hours from the release date on this service bulletin or no later than the

subsequent inspection of Airworthiness Limitation (AWL) 27---40---102 of the

Maintenance Requirements Manual (MRM) Part 2, Appendix B, whichever comes

first, unless otherwise directed by the airworthiness authority of the operator.
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

This service bulletin affects Airworthiness Limitations (AWLs) and/or Damage

Tolerance Inspections (DTIs). Reference applicable Pre/Post Modsum

TC601R18078 and/or service bulletin 601R---27---160 in the (MRM).

E. Approval

The technical content of this service bulletin has been approved under the authority

of the TCCA Design Approval Organization No: DAO #93---Q ---02.

F. Manpower

The man-hours given below are estimates for direct labor done by an experienced

crew on an aircraft prepared for maintenance.

These estimates do not include the time necessary for:

--- Administrative functions such as planning, liaising, familiarization, and report

writing.

--- Non-productive elapsed time such as rest time, having meals, and crew shift

changes.

--- Elapsed time such as for paint to dry, sealant to cure, and fuel tank venting.

--- Preparation for modification (unless specified in the Accomplishment

Instructions) such as cleaning and getting parts, tools, consumables, and

ground equipment.

--- Quality assurance inspections, troubleshooting and/or correction of

discrepancies found when a task is done.

--- All other activities that are not considered by Bombardier as directly related to

the accomplishment of this procedure.

NOTE: For on-site labor assistance, please speak with a Fleet Services

representative for a quote. The Fleet Services Team can be

contacted through the CRC at 514-855-8500 or email at

thd.crj@aero.bombardier.com.
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

It will take an estimated 20.0 man-hours to complete this service bulletin. The

man-hours are divided in the table that follows (elapsed cure time is not included in

the man-hour summary given above):

TASK MAN-HOURS

(1) Job Set-Up 8.0

(2) Procedure 1.0

(3) Test 3.0

(4) Job Close-Out 8.0

NOTE: The man-hours for the procedure do not include the hours to replace

damaged parts.

G. Material --- Price and Availability

(1) The kits in the tables that follow are available from Bombardier Commercial

Aircraft.

NOTE: For a list of kit contents, refer to paragraph 3.A.

KIT NUMBER NAME

601R27---160K1 HSTA --- Laminated shims kit

601R27---160K2 HSTA --- Hardware kit

(2) Please send a purchase order to the address below to schedule kit delivery:

Bombardier

Service Bulletin Kit Support Team

123 Garratt Blvd, N42---24

Toronto, Ontario

Canada M3K 1Y5

Fax: 416-375-3060

Phone: 416-375-3920

Email: sbkits@aero.bombardier.com

Please contact the Service Bulletin Kit Support Team at the address above for

terms and conditions.
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

(3) The parts in the table that follows can be necessary to do this service bulletin

and are available from Bombardier Commercial Aircraft.

PART NUMBER NAME QUANTITY ALTERNATE PART

NUMBER

601R92309---3 Lower pin 2 601R92309---1 ¡

601R92310---3 Upper pin 2 601R92310---1 ¡

601R92386---3 Trunnion 4 601R92386---1 ¡

¡ If the alternate part number is ordered, it is necessary to give a serial

number and change the identification of the part as given in this service bulletin.

(4) Please send a purchase order to the address below to schedule part delivery:

Bombardier

Service Bulletin Kit Support Team

123 Garratt Blvd, N42---24

Toronto, Ontario

Canada M3K 1Y5

Fax: 416-375-3060

Phone: 416-375-3920

Email: sbkits@aero.bombardier.com

For Business/Corporate Operators

All Business/Corporate operators (i.e. operators who do not have a commercial

airline operation) refer to SB 800-00-004 for commercial policy coverage and

logistics/planning arrangements (refer to www.cic.bombardier.com/technical

library/service bulletins/challenger/850/SB 800-00-004).

To place an order for parts or kits, please call Bombardier Parts Logistics at

514-855-2999 or 1-866-538-1247.

H. Tooling --- Price and Availability

There are no tool kits for this service bulletin. Refer to paragraph 3.C. for a list of

special tools and equipment for this service bulletin.

I. Weight and Balance

Not changed.
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

J. Electrical Load Data

Not changed.

K. References

Restriction and/or Special Instruction (RSI) C ---A275, Revision A.

Modification Summary TC601R18078, Revision B.

Refer to the SB Introduction document for definition or explanation of Service

Bulletin content.

Aircraft Maintenance Manual

Maintenance Requirement Manual

Structural Repair Manual (SRM)

For Bombardier reference only: PCA 05479.

L. Other Publications Affected

Aircraft Illustrated Part Catalog (AIPC)

Aircraft Maintenance Manual (AMM)

Maintenance Requirement Manual (MRM)

M. Relationship Chart

PRE-SB

PART NUMBER NAME POST-SBPART NUMBER NAME

600---92384---5 Pin K601R92308---5 or

601R92310---3 Pin

600---92384---7 Pin K601R92308---7 or

601R92310---3 Pin

601R92310---1 Pin K601R92308---9 or

601R92310---3 Pin

600---92383---5 Pin K601R92308---11 or

601R92309---3 Pin

600---92383---7 Pin K601R92308---13 or

601R92309---3 Pin

601R92309---1 Pin K601R92308---15 or

601R92309---3 Pin

601R92386---1 Trunnion K601R92308---19 or

601R92386---3 Trunnion
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

2. ACCOMPLISHMENT INSTRUCTIONS

Reference Information

REFERENCE DESIGNATION

AMM 12---00---07---861---801 Connect External AC Power

AMM 20---21---00---910---801 Torque procedures for Threaded Fasteners

AMM 24---00---00---910---801 Electrical/Electronic Safety Precautions

AMM 27---40---00---710---802 Operational Test of the Horizontal Stabilizer Trim

System

AMM 27---41---00---740---801 Functional Check (Ground Maintenance Test) of

the HSTCU

AMM 27---42---01---000---801 Removal of the Horizontal-Stabilizer Trim

Actuator (HSTA)

AMM 27---42---01---400---801 Installation of the Horizontal-Stabilizer Trim

Actuator (HSTA)

AMM 51---26---00---110---801 Solvent Cleaning

AMM 55---32---05---000---806 Removal of the Middle Upper Fairing

AMM 55---32---05---400---806 Installation of the Middle Upper Fairing

AMM 55---32---05---000---807 Removal of the Middle Lower Fairing

AMM 55---32---05---400---807 Installation of the Middle Lower Fairing

SRM 51---21---11 Corrosion Prevention Procedures

SRM 51---21---16 Finish Codes

SRM 51---23---00 Pressure, Environmental, Fuel Tank and Firewall

Sealing

SRM 51---25---06 Fluid ---Resistant (FR) Epoxy Primer

SRM 51---25---16 Fluid ---Resistant (FR) Polyurethane Topcoat

SRM 51---26---00 Cleaning

SRM 51---41---02 Bolts, Screws and related items
SERVICE BULLETIN 601R---27 ---160

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Revision A, Oct 03/2012

Tolerance Information

Linear Tolerances Angular Tolerance

X.XX in. (X.X mm) X.X in. (X mm)

+/ ---0 ̊ 30” +/ --- 0.03 in. +/--- 0.1 in.

+/ --- 0.8 mm +/ --- 3 mm

NOTE: The tolerances above apply to the dimensions given in this service

bulletin, except when specified differently.
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

A. Job Set-Up

(1) Obey all the electrical/electronic safety precautions (AMM

24---00---00---910---801).

(2) Open, safety, and tag the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP ---2 B8 STAB CH1 HSTA 222

CBP ---2 F5 STAB CH1 HSTCU 222

CBP ---3 A5 STAB CH2 HSTA 221

CBP ---4 A1 STAB CH2 HSTCU 222

WARNING: PUT THE SAFETY DEVICES, THE WARNING SIGNS, AND THE

WARNING PLACARDS IN POSITION BEFORE YOU START A

PROCEDURE ON OR NEAR: FLIGHT CONTROLS FLIGHT CONTROL

SURFACES COMPONENTS THAT MOVE. MAKE SURE THAT THERE

ARE NO PERSONS OR EQUIPMENT ON OR NEAR THE FLIGHT

CONTROL SURFACES. ACCIDENTAL MOVEMENT OF THE FLIGHT

CONTROLS CAN CAUSE INJURIES TO PERSONS AND/OR DAMAGE

TO EQUIPMENT.

(3) Install the applicable warning placards on the pilot’s and the copilot’s control

wheels and the STAB TRIM/MACH TRIM panel.

CAUTION: MAKE SURE THAT THE REAR FUSELAGE SUPPORT IS PUT DIRECTLY

BELOW THE RIVET LINE AT FS755.00 (37 INCHES AFT OF THE

BAGGAGE COMPARTMENT DOOR). IF THE REAR FUSELAGE

SUPPORT IS NOT DIRECTLY BELOW THE RIVET LINE, DAMAGE TO

THE AIRCRAFT CAN OCCUR.

(4) Remove the access panels that follow:

ACCESS DESIGNATION REFERENCE

Middle Upper

Fairing

Access panel AMM 55---32---05---000---806

Middle Lower

Fairing

Access panel AMM 55---32---05---000---807
SERVICE BULLETIN 601R---27 ---160

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Revision A, Oct 03/2012

B. Procedure

Refer to Figure 1.

(1) Remove the HSTA from the aircraft (AMM 27---42---01---000---801).

.

(a) Record the position of the removed trunnions.

(2) Discard the cotter pins (2), (12), and (18), the bolts (7), (15) and (19), the

laminated shims (8), the nuts (11), and the washers (10).

(3) Clean the trunnions (9), the upper pins (1) and the lower pins (13) with solvent

(SRM 51---26---00)

(4) Do a visual inspection of the trunnions (9), the upper pins (1) and the lower

pins (13) for gouges, scratches or corrosion.

(5) Discard the upper pins (1) and the lower pins (13) that have gouges,

scratches or corrosion.

(6) Keep the trunnions (9) that have gouges, scratches or corrosion for

subsequent steps.

(7) Change the identification of the trunnions (9), the upper pins (1) and the lower

pins (13) that are not damaged and add a serial number as follows:

NOTE: It is permitted to use this step to change the identification of the spare

parts.

NOTE: If trunnions P/N 601R92386---3, lower pins P/N 601R92309---3, and

upper pins P/N 601R92310---3 are used to replace the defective parts,

it is not necessary to do this step.

NAME PART NUMBER

(PRE ---MOD)

PART NUMBER

(POST ---MOD)

SERIAL

NUMBER

Upper pin 600---92384---5 K601R92308---5 SS/N RJ/XXXYYYYY ¡

Upper pin 600---92384---7 K601R92308---7 SS/N RJ/XXXYYYYY ¡

Upper pin 601R92310---1 K601R92308---9 SS/N RJ/XXXYYYYY ¡

Lower pin 600---92383---5 K601R92308---11 SS/N RJ/XXXYYYYY ¡

Lower pin 600---92383---7 K601R92308---13 SS/N RJ/XXXYYYYY ¡

Lower pin 601R92309---1 K601R92308---15 SS/N RJ/XXXYYYYY ¡
SERVICE BULLETIN 601R---27 ---160

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Revision A, Oct 03/2012

NAME SERIAL

NUMBER

PART NUMBER

(POST ---MOD)

PART NUMBER

(PRE ---MOD)

Trunnion 601R92386---1 K601R92308---19 SS/N RJ/XXXYYYYY ¡

¡ XXX, is for the three-letters airline designator code that the International Civil

Aviation Organization (ICAO) gave to the airline.

YYYYY, is for the five-digit sequence number that the operator chose.

(a) If the ICAO airline designator code is not available, write the serial

number as follows:

SS/N RJ/BA(aircraft serial number) ---1 or subsequent number.

When the identification of the serial number is done on a spare part, the

aircraft serial number of one of the aircraft of the fleet and a subsequent

number is used.

Example:

AIRCRAFT

SERIAL

NUMBER

PART NUMBER SERIAL NUMBER

8999 K601R92308---9 SS/N RJ/BA8999---1

8999 K601R92308---9 SS/N RJ/BA8999---2

7900 K601R92308---15 SS/N RJ/BA7900---1

7901 K601R92308---15 SS/N RJ/BA7901---1

Spare K601R92308---19 SS/N RJ/BA7901---2

7821 K601R92308---19 SS/N RJ/BA7821---1

NOTE: It is permitted to use indelible ink as an alternate identification method

to the vibro ---peening to write the serial number and the identification

number on the upper and the lower pins.

(b) Prepare the surface for identification of the upper pins (1) and the lower

pins (13) for vibro-peening as follows:

NOTE: If indelible ink is used as an alternate identification method to the

vibro-peening, it is necessary to do steps 4 and 5 only.

1 Install waterproof paper and masking tape on the adjacent

surfaces.
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

2 Clean the surface with a solvent cleaner (AMM

51---26---00---110---801).

3 Remove the cadmium plating with aluminium oxide abrasive

(400-grit or finer).

4 If indelible ink is used as an alternate identification method to the

vibro ---peening, lightly rub the surface of the identification area with

a scotch brite and make sure not to remove the paint.

5 Clean the area with a solvent cleaner (AMM

51---26---00---110---801).

(c) Use identification method 2D1 of Aerospace Standard AS 478 and the

instructions that follow to vibro ---peen the part number and the serial

number on the upper pins(1) (Refer to Figure 1, sheet 2, view B):

NOTE: If indelible ink is used as an alternate identification method to the

vibro-peening, the depth criteria is not necessary.

--- The part number and the serial number of the upper pin (1) must be

at 0.52 in. (13.2 mm) from the edge of the upper pin (1) and at a

minimum of 0.440 in. (11.18 mm) from the center of the hole.

--- The part number and the serial number must be in block capital

letters and Arabic numerals without serif fonts.

--- Letter height must be 0.10 inch (2.5 mm).

--- The depth of the letter must be between 0.001 and 0.006 in.

(0.03 and 0.15 mm).

(d) Use identification method 2D1 of Aerospace Standard AS 478 and the

instructions that follow to vibro ---peen the part number and the serial

number on the lower pins(13) (Refer to Figure 1, sheet 2, view D):

NOTE: If indelible ink is used as an alternate identification method to the

vibro-peening, the depth criteria is not necessary.

--- The part number of the lower pin (13) must be at 0.52 in. (13.2 mm)

from the edge of the lower pin (13) and at a minimum of 0.450 in.

(11.43 mm) from the center of the hole.

--- The serial number of the lower pin (13) must be at 0.81 in. (20.6) from

the edge and at a minimum of 0.130 in. (3.30 mm) from the lower

edge of the lower pin (13).

--- The part number and the serial number must be in block capital

letters and Arabic numerals without serif fonts.
SERVICE BULLETIN 601R---27 ---160

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Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

--- Letter height must be 0.10 inch (2.5 mm).

--- The depth of the letter must be between 0.001 and 0.006 in.

(0.03 and 0.15 mm).

(e) For the vibro-peening identifications done on the upper pins (1) and the

lower pins (13), do as follows:

1 Apply a brush coat of cadmium plating on the bare metal surfaces

of the upper pins (1) and the lower pins (13) (SRM 51---21---11).

2 Apply a layer of fluid-resistant primer on the bare metal surfaces of

the upper pins (1) and the lower pins (13) (SRM 51---25---06).

(f) For the indelible ink identifications done on the upper pins (1) and the

lower pins (13), do as follows:

1 Apply a layer of clear polyurethane topcoat on the identification

(SRM 51---25---16).

2 Make sure that you can read the identification.

(g) Prepare the surface for identification of the trunnions (9) with indelible

ink as follows:

1 Lightly rub the surface of the identification area with a scotch brite

and make sure not to remove the paint.

2 Clean the area with a solvent cleaner (AMM

51---26---00---110---801).

(h) With an indelible ink pen and the instructions that follow, write the part

number and the serial number on the trunnions (9): (Refer to Figure 1,

sheet, view C):

NOTE: The indelible ink must not cause damage to the surface of the

trunnions (9).

--- The part number and the serial number of the trunnion (9) must be at

0.66 in. (16.8 mm) and at 0.04 in. (1.1 mm) from the edges of the

trunnion (9).

--- The part number and the serial number must be in capital letters and

Arabic numerals without serif fonts.

--- Letter height must be 0.10 in. (2.5 mm).

(i) Apply a clear polyurethane topcoat on the identification and serial

number of the trunnions (9) (SRM 51---25---16).

(j) Make sure that you can read the identification of the trunnions (9).
SERVICE BULLETIN 601R---27 ---160

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Revision A, Oct 03/2012

(8) Record the serial number of the trunnions (9), the upper pins (1) and the

lower pins (13) in the applicable logbooks.

NOTE: To find the history of the part at the time of serialization refer to ATA

Report 51---93---01 “Structural Maintenance Program Guidelines

For Continuing Airworthiness” paragraph 4.6, “Removable

Structural Components”. If a part has been mixed between aircraft

certified at 51,000 Lb MTOW and 53,000 Lb MTOW, the intervals

applicable to 53,000 Lb MTOW must apply to the part.

(9) Install the HSTA (AMM 27---42---01---400---801 and the steps that follow):

(a) If new P/N 601R92386---3 trunnions are installed and the diameter of the

two holes of the trunnions is less than 0.375 in. (9.27 mm), do as follows:

1 Backdrill the two holes of each removed trunnion into an aluminium

plate or equivalent that has a minimum thickness of 0.250 in. (6.35

mm).

2 Make sure that the diameter of the holes in the aluminium template

is from 0.375 in. to 0.380 in. (9.53 mm to 9.65 mm).

3 On the trunnion surface, make sure that the location of the two

holes and the center hole in the removed trunnion are aligned with

the two holes and the center hole of the new trunnion.

4 Backdrill the two holes from the drilled aluminium template to each

new trunnion (9).

5 Remove the burrs and sharp edges from the new trunnions (9).

6 Apply chemical conversion coating on the bare metal areas of the

new trunnions (9).

7 Apply fluid-resistant primer on the bare metal areas of the new

trunnions (9).

(b) If the new shims (8) were peeled, apply a layer of fluid-resistant primer

on the bare metal surfaces of the shims (8) (SRM 51---25---06).

(c) Apply sealant on the mating faying surfaces of the shims (8) and the

trunnion (9) (SRM 51---23---00).

(d) Make sure that the cotter pins (2), (12), and (18), the bolts (7), (15) and

(19), the nuts (11), and the washers (10) used to install the HSTA are

new.

(e) Torque the installed fasteners (AMM 20---21---00---910---801).

NOTE: To prevent over ---torque, it is permitted to replace the washer (10)

with washer P/N NAS1149F0616P or to add a washer P/N

NAS1149F0616P with the washer (10).
SERVICE BULLETIN 601R---27 ---160

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Revision A, Oct 03/2012

HSTA Pins and Trunnions --- Removal/Installation

Figure 1 (Sheet 1 of 2)

rsb601r27160_001.dg sd 29aout 2011

1. Upper pin

600--92384--5 (Pre--Mod)

K601R92308--5 or

601R92310--3 (Post--Mod), or

600--92384--7 (Pre--Mod)

K601R92308--7 or

601R92310--3 (Post--Mod), or

601R92310--1 (Pre--Mod)

K601R92308--9 or

601R92310--3 (Post--Mod).

2. Cotter pin

MS24665--134 (Pre--Mod)

MS24665--153 (Post--Mod).

3. Nut.

4. Washer.

5. Spacer.

6. Bolt.

NAS6206--14D.

8. Laminated shim

601R92303--17.

9. Trunnion.

601R92386--1 (Pre--Mod)

K601R92308--19 or 601R92386--3 (Post--Mod).

10. Washer

AN960--616L (Pre--Mod)

NAS1149F0632P (Post--Mod).

11. Nut MS17826--6.

12. Cotter pin

MS24665--134 or

MS24665--283 (Pre--Mod)

MS24665--300 (Post--Mod).

13. Lower pin.

600--92383--5 (Pre--Mod)

K601R92308--11 or 601R92309--3 (Post--Mod) or

600--92383--7 (Pre--Mod)

K601R92308--13 or 601R92309--3 (Post--Mod) or

601R92309--1 (Pre--Mod)

K601R92308--15 or 601R92309--3 (Post--Mod).

LEGEND

14. Bolt.

15. Bolt NAS6206--8D.

16. Washer.

17. Nut.

18. Cotter pin

MS24665--134 (Pre--Mod)

MS24665--153 (Post--Mod).

19. Bolt NAS6206--20D.

1

1

7

12

11

10

9

8

9

12

11

10

8

9

13

18

17 16

13 14

15

BRACKET

(REF)

HSTA

(REF)

ATTACHMENT

FITTING (REF)

C

1

19

5

1

3

2

4

7. Bolt.

1 To prevent over--torque,it is permitted

to replace the washer (10) with

washer P/N NAS1149F0616P

or to add a washer

P/N NAS1149F0616P

with the washer (10).

D
SERVICE BULLETIN 601R---27 ---160

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Revision A, Oct 03/2012

HSTA Pins and Trunnions --- Removal/Installation

Figure 1 (Sheet 2 of 2)

rsb601r27160_002.dg sd/cr 03--aug--2012

NOTES

Upper pin P/N 601R92310--3

is supplied with a serial number.

Thus, view B is not applicable to this P/N.

Trunnion P/N 601R92386--3

is supplied with a serial number.

Thus, view C is not applicable to this P/N.

Lower pin P/N 601R92309--3

is supplied with a serial number.

Thus, view D is not applicable to this P/N.

2

4

3

B

0.52 in. (13.2 mm)

0.440 in. (11.18 mm)

MINIMUM

1 2

D

0.450 in. (11.43 mm)

MINIMUM

0.52 in. (13.2 mm)

0.130 in.

(3.30 mm)

MINIMUM

0.81 in. (20.6 mm)

13 4

C

0.66 in. (16.8 mm)

0.04 in. (1.1 mm)

3 9

5

6

5 6

5 6

LEGEND

1. Upper pin

600--92384--5 (Pre--Mod)

K601R92308--5 (Post--Mod), or

600--92384--7 (Pre--Mod)

K601R92308--7 (Post--Mod), or

601R92310--1 (Pre--Mod)

K601R92308--9 (Post--Mod).

9. Trunnion.

601R92386--1 (Pre--Mod)

K601R92308--19 (Post--Mod)

13.Lower pin.

600--92383--5 (Pre--Mod)

K601R92308--11 (Post--Mod) or

600--92383--7 (Pre--Mod)

K601R92308--13 (Post--Mod) or

601R92309--1 (Pre--Mod)

K601R92308--15 (Post--Mod).

1. The part number and the serial number must

be in capital letters and arabic numerals

without serif font.

Letter height must be 0.10 inch (2.5mm).

XXX is for the three--letter airline designator that

the International Civil Aviation Organization (ICAO)

gave to the airline.

The Accomplishment Instructions gives an alternate

for the operators that do not have an ICAO code.

YYYYY is the five--digit sequence number

that the operator selected and recorded.

If the vibro--peening method is used, the

depth of the letter must be between 0.001

and 0.006 in. (0.03 and 0.15 mm).

The letter Z shown in the part number is

replaced with the applicable dash number

listed in the legend for the upper pin (1)

and the lower pin (13).
SERVICE BULLETIN 601R---27 ---160

Page 17 of 20

Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

C. Job Close-Out

(1) Remove all tools, equipment, and unwanted materials from the work area.

(2) Install the access panels that follow:

ACCESS DESIGNATION REFERENCE

Middle Upper

Fairing

Access panel AMM 55---32---05---400---806

Middle Lower

Fairing

Access panel AMM 55---32---05---400---807

(3) Apply external AC power to the aircraft (Refer to AMM 12---00---07---861---801).

(4) Do the operational test of the HSTA trim system (AMM

27---40---00---710---802).

(5) Do the functional test of the HSTCU (AMM 27---41---00---740---801).

(6) Remove the applicable warning placards from the pilot’s and the copilot’s

control wheels and the STAB TRIM/MACH TRIM panel.

(7) When this service bulletin is completed, make this entry in the applicable

logbooks: “Service Bulletin 601R---27---160, Revision A, Flight Controls ---

Horizontal Stabilizer Trim Actuator (HSTA) --- Serialization of the HSTA Pins

and Trunnions, incorporated.”
SERVICE BULLETIN 601R---27 ---160

Page 18 of 20

Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

3. MATERIAL INFORMATION

A. Kit Information

KIT 601R27 ---160K1

PART

NUMBER QUANTITY NAME ALTERNATEPARTS NOTES

601R92303---17 3 Laminated Shim --- ---

KIT 601R27 ---160K2 ¡

PART NUMBER QUANTITY NAME ALTERNATE

PARTS NOTES

MS17826---6 9 Nut --- ---

MS24665---153 9 Cotter Pin --- ---

MS24665---300 9 Cotter Pin --- ---

NAS1149F0616P 9 Washer --- ---

NAS1149F0632P 9 Washer --- ---

NAS6206---14D 3 Bolt --- ---

NAS6206---20D 3 Bolt --- ---

NAS6206---8D 5 Bolt --- ---

¡ The kit can contain more hardware and/or material than necessary.
SERVICE BULLETIN 601R---27 ---160

Page 19 of 20

Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

B. Consumable Information

The materials that follow are necessary to do this service bulletin and can be

ordered from Bombardier or purchased directly from industry sources. If the

material is ordered from Bombardier, there can be some lead time because of the

shelf life of the material.

CONSUMABLES

SPECIFICATION QUANTITY NAME REFERENCE

--- As

necessary

Indelible ink Commercially

available

BAMS 565---001 As

necessary

Fluid-resistant

primer

¡13---007

BAMS 565---002 As

necessary

Polyurethane

topcoat, clear

¡16---003

MIL ---C ---81706 As

necessary

Chemical

conversion

coating

¡25---025

MIL ---PRF---81733

type IV

As

necessary

Sealant,

Pressure and

Environmental

www.prc---desoto.com

¡ Refer to AMM 51---31---00---990---801

C. Special Tools and Equipment

There are no special tools and equipment for this service bulletin.
SERVICE BULLETIN 601R---27 ---160

Page 20 of 20

Sep 29/2011 SB 601R---27---160

Revision A, Oct 03/2012

D. Disposition of Parts

The table that follows shows the disposition of installed parts on the aircraft (or

spares), and the relation of installed parts (or spares) to the new parts to be

installed with this service bulletin.

PRE-SB

PART NUMBER

NAME QUANTITY DC POST-SB

PART NUMBER

600---92384---5 Upper Pin 2 RWK K601R92308---5 ¡

600---92384---7 Upper Pin 2 RWK K601R92308---7 ¡

601R92310---1 Upper Pin 2 RWK K601R92308---9 ¡

600---92383---5 Lower Pin 2 RWK K601R92308---11 ©

600---92383---7 Lower Pin 2 RWK K601R92308---13 ©

601R92309---1 Lower Pin 2 RWK K601R92308---15 ©

601R92386---1 Trunnion 4 RWK K601R92308---19 ¢

¡ P/N 601R92310---3 can replace P/N K601R92308---5, ---7, or ---9.

© P/N 601R92309---3 can replace P/N K601R92308---11, ---13, or ---15.

¢ P/N 601R92386---3 can replace P/N K601R92308---19.

Disposition code (DC):

RWK: Rework part as shown in this service bulletin.

1
THANK YOU FOR ANSWERING THIS EVALUATION FORM 

UPON COMPLETION OF THIS EVALUATION FORM/COMPLIANCE SHEET, FAX TO 

450-476-7300 or email to CRJ_SB_Evaluation_Form@aero.bombardier.com

SERVICE BULLETIN EVALUATION FORM/COMPLIANCE SHEET 

(YOUR IDEAS WILL HELP US PROVIDE BETTER BULLETINS) 

SERVICE BULLETIN : ISSUE: 

 STRONGLY DISAGREE NEUTRAL AGREE STRONGLY 

 DISAGREE AGREE 

 Instructions to do the Service Bulletin 

were accurate. 

Comments:

    

 Illustration(s), figure(s), picture(s) and/or 

kit drawing(s) were helpful to carry out 

instructions. 

Comments:

    

 If a parts kit was required, did the kit 

contents received agree with the 

contents listed in the bulletin? 

Comments: 

    

 Aircraft hands-on work was 

accomplished in estimated time. 

 Comments:

    

 Overall, I was satisfied with this Service 

Bulletin. 

 Comments: 

    

PLEASE SUPPLY US WITH THE FOLLOWING DATA AND FAX TO (450) 476-7300: 

OPERATOR: NAME (Please print) 

SERVICE CENTER: TELEPHONE: 

AIRCRAFT SERIAL NO.: FACSIMILE: 

DATE OF SB 

INCORPOARTION