SB 670BA ---35---012

Page 1 of 1

May 06/2013

SERVICE BULLETIN

REVISION TRANSMITTAL SHEET

SERVICE BULLETIN 670BA ---35 ---012

SUBJECT: Oxygen --- Crew Oxygen System --- In-Service Crew ---Oxygen ---System

Cleaning

These pages transmit:

Revision B of Service Bulletin 670BA --- 35 --- 012,

dated May 06/2013

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

this service bulletin incorporated.

Reason:

Revised Accomplishment Instructions:

Change some steps in the Close-Out section of this service bulletin.

Revised Material Information, paragraph 3., to:

Change some part numbers in kit 670BA35012K90A.

Add Kit 670BA35012K91

Revised Appendix A to:

Change some steps in the Procedure.

Change some items numbers in the illustration.

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

content.

Instructions:

Discard the copy of Service Bulletin 670BA --- 35 --- 012, Revision A, dated Nov 26/2012.

Replace with the copy attached.

Service Bulletin History:

Initial issue, dated June 23/2012.

Revision A, dated Nov 26/2012.

1
SB 670BA−35−012

Page 1 of 42

June 23/2012

Revision B, May 06/2013

SERVICE BULLETIN

Technical

Publications

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

TRANSFERRED SPARES IN THE LAST SIX MONTHS, SEND THIS SERVICE BULLETIN TO THE NEW

OWNER, UNLESS CONFIRMATION WAS RECEIVED THAT BOMBARDIER COMMERCIAL AIRCRAFT

HAS INCLUDED THE NEW OPERATOR ON THE DISTRIBUTION LIST.

SEND THIS SERVICE BULLETIN TO THE LESSEE. IF THE OPERATOR HAS SOLD AIRCRAFT OR

ATA SYSTEM: 35−10 NUMBER: 670BA−35−012

SUBJECT: Oxygen − Crew Oxygen System − In-Service Crew−Oxygen−System

Cleaning

1. PLANNING INFORMATION

A. Effectivity

(1) Aircraft Affected:

Aircraft Model Service Aircraft Serial Numbers

CL−600−2C10 10002 thru 10265

CL−600−2D15 and CL−600−2D24 15001 thru 15153, 15156 and 15157

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 service

bulletin, examine all Supplemental Type Certificates (STCs) and

Supplemental Type Approvals (STAs) or equivalent action changes

to make sure you can complete this service bulletin.

NOTE: The procedure in this service bulletin was validated on aircraft serial

number 15001.
SERVICE BULLETIN 670BA−35−012

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June 23/2012

Revision B, May 06/2013

B. Reason

(1) Condition

It is possible for the oxygen tubes of the crew oxygen system to have traces

of oil because of the procedure used for pressure testing and tube cleaning.

This can cause a fire hazard.

(2) Evidence

Field sampling of a line within the crew oxygen system on nine aircraft

showed traces of oil.

(3) Objective/Benefit

This service bulletin gives the procedure to clean the crew oxygen system.

C. Description

The passenger door is opened. The crew oxygen system is depressurized. The

circuit breakers are opened. The electrical power is removed from the aircraft. The

main avionics-compartment door is opened. The copilot and the pilot side consoles

are removed. The entrance storage compartment is removed. Galley 1 is removed.

The compartment and Galley 1 floor panels are removed.

The end-fittings and the unions are cleaned manually. The inner wall of the tubes

are cleaned with solvent and flushed with nitrogen. A leak test and a functional test

of the crew oxygen-system are done.

The crew oxygen system is pressurized.The circuit breakers are closed. The

compartment and Galley 1 floor panels are installed. Galley 1 is installed. The

entrance storage compartment is installed. The copilot and the pilot side consoles

are installed. The main avionics-compartment door is closed. The electrical power

is connected to the aircraft.

D. Compliance

Recommended Service Bulletin.

Bombardier recommends that this service bulletin be done at no more than 6600

flight hours from the release date of revision A of this service bulletin, unless

otherwise directed by the airworthiness authority of the operator.

This service bulletin does not affect Airworthiness Limitations (AWLs) or Damage

Tolerance Inspections (DTIs).
SERVICE BULLETIN 670BA−35−012

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June 23/2012

Revision B, May 06/2013

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. Contact the Fleet Services Team

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

thd.crj@aero.bombardier.com.

It will take an estimated 51 man-hours to complete this service bulletin. The

man-hours are divided in the table that follows:

TASK MAN-HOURS

(1) Job Set-Up 14

(2) Procedure 20

(3) Test 5

(4) Job Close-Out 12
SERVICE BULLETIN 670BA−35−012

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June 23/2012

Revision B, May 06/2013

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

670BA35012K1 Crew−Oxygen Low Pressure Parts

(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.

(3) Refer to paragraph 3.B. for a list of consumables for this service bulletin.

H. Tooling − Price and Availability

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

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

KIT NUMBER NAME

670BA35012K90A Crew−Oxygen Low Pressure

Flushing Kit

For aircraft that have not had revision A or a previous revision of this service

bulletin incorporated but that have ordered Kit 670BA35012K90

KIT NUMBER NAME

670BA35012K91 Hose Replacement Kit
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 5 of 42

June 23/2012

Revision B, May 06/2013

(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.

Refer to paragraph 3.C. for a list of special tools and equipment for this service

bulletin. Refer to the paragraphs below for terms and conditions.

I. Weight and Balance

Not changed.

J. Electrical Load Data

Not changed.

K. References

Restriction and/or Special Instruction (RSI) C−35−1068−00, revision D.

Aircraft Maintenance Manual (AMM).

For Bombardier reference only: PCA 74895.

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

bulletin content.

L. Other Publications Affected

None

M. Relationship Chart

Not applicable.
SERVICE BULLETIN 670BA−35−012

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June 23/2012

Revision B, May 06/2013

2. ACCOMPLISHMENT INSTRUCTIONS

A. Job Set-Up

Reference Information

REFERENCE DESIGNATION

AMM 12−00−00−867−801 Standard Aircraft Configuration for Maintenance

AMM 12−16−35−614−801 Servicing of the Crew Oxygen System

AMM 12−18−38−613−801 Servicing of the Forward Water System

AMM 20−21−00−910−801 Torquing of Threaded Fasteners

AMM 20−22−00−910−802 Torquing of Plumbing Line Fittings in the Oxygen System

AMM 20−51−00−000−802 Removal of Lockwire

AMM 20−51−00−400−802 Installation of Lockwire

AMM 23−31−10−710−801 Operational Test of the Attendant Handset/

Cradle

AMM 24−00−00−861−802 Remove Electrical Power from the Aircraft

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

AMM 25−15−07−000−801 Removal of the Pilot/Copilot Side−Console Panel

AMM 25−15−07−400−801 Installation of the Pilot/Copilot Side Console

Panel

AMM 25−15−10−000−801 Removal of the Control Column Panels

AMM 25−15−10−400−801 Installation of the Control Column Panels

AMM 25−17−01−000−801 Removal of the Flight Compartment Door

(PRE STC CR25−17−202)

AMM 25−17−01−400−801 Installation of the Flight Compartment Door

(PRE STC CR25−17−202)

AMM 25−24−13−000−801 Removal of the Entrance Storage Compartment

AMM 25−24−13−000−801 Installation of the Entrance Storage Compartment
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

REFERENCE DESIGNATION

AMM 25−26−05−000−803 Removal of the Passenger−Entry Compartment

Ceiling Panels

AMM 25−26−05−400−803 Installation of the Passenger−Entry Compartment Ceiling Panels

AMM 25−31−01−000−802 Removal of the Galley 1

AMM 25−31−01−400−802 Installation of the Galley 1

AMM 25−32−01−710−801 Operational Test of the Oven

AMM 25−32−06−710−801 Operational Test of the Beverage Maker

AMM 33−26−00−710−801 Operational Test of the Galley Lights

AMM 35−00−00−910−801 Oxygen Safety Precautions

AMM 35−00−00−910−802 Oxygen Servicing Safety Precautions

AMM 35−10−00−790−801 Leakage Test of the Crew Oxygen System

AMM 35−10−00−862−801 Depressurize the Crew Oxygen System

AMM 35−10−00−862−802 Pressurize the Crew Oxygen System

AMM 35−11−03−000−801 Removal of the Oxygen Cylinder

AMM 35−11−03−400−801 Installation of the Oxygen Cylinder

AMM 35−11−09−000−801 Removal of the Oxygen Pressure Switch

AMM 35−11−09−400−801 Installation of the Oxygen Pressure Switch

AMM 35−11−15−000−801 Removal of the Mask Stowage Box

AMM 35−11−15−400−801 Installation of the Mask Stowage Box

AMM 52−22−00−000−801 Removal of the Crew Escape Hatch

AMM 52−22−00−400−801 Installation of the Crew Escape Hatch

AMM 51−23−00−390−825 Humiseal Corrosion − Protective Coating

AMM 51−80−00−760−801 Electrical Bonding Test

AMM 53−00−47−000−802 Removal of the Passenger Compartment Floor

Panels
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

REFERENCE DESIGNATION

AMM 53−00−47−400−802 Installation of the Passenger Compartment

Floor Panels

AMM 53−12−32−000−801 Removal of the Flight Controls Access Panel

(131AL/132AR)

AMM 53−12−32−400−801 Installation of the Flight Controls Access Panel

(131AL/132AR)

SRM 51−26−00−001−001 Cleaning

(1) Make sure that the aircraft is in standard configuration for maintenance (Refer

to AMM 12−00−00−867−801).

WARNING: OBEY ALL THE SAFETY PRECAUTIONS WHEN YOU DO

MAINTENANCE ON OR NEAR ELECTRICAL/ELECTRONIC

EQUIPMENT. IF YOU DO NOT OBEY THE SAFETY PRECAUTIONS,

INJURIES TO PERSONS AND/OR DAMAGE TO THE EQUIPMENT CAN

OCCUR.

(2) Obey all the electrical/electronic safety precautions (Refer to AMM

24−00−00−910−801).

(3) Obey all the electrostatic discharge safety precautions (AMM

24−00−00−910−802).

WARNING: OBEY ALL THE OXYGEN SAFETY PRECAUTIONS WHEN YOU DO

WORK ON THE OXYGEN SYSTEM AND OXYGEN SYSTEM

COMPONENTS. 

 − MAKE SURE THE WORK AREA ADJACENT TO THE OXYGEN

SYSTEM COMPONENTS IS CLEANED

 − MAKE SURE TO INSTALL A CAP ON ALL COMPONENTS OF THE

OXYGEN SYSTEM THAT ARE DISCONNECTED. METAL OR PLASTIC

CAPS ARE THE ONLY ACCEPTED ITEMS TO CAP COMPONENTS OF

THE OXYGEN SYSTEM

 − MAKE SURE THE OXYGEN SYSTEM COMPONENTS THAT ARE

INSTALLED ON THE AIRCRAFT ARE CLEAN

IF YOU DO NOT OBEY THE SAFETY PRECAUTIONS, YOU CAN CAUSE

A FIRE OR AN EXPLOSION.
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

WARNING: DO NOT LET OIL, GREASE, OR SOLVENTS GET ON YOUR

HANDS, CLOTHING, OR THE EQUIPMENT USED TO DO WORK

ON THE OXYGEN SYSTEM. IF OXYGEN TOUCHES OIL,

GREASE, OR SOLVENTS, THEY CAN START TO BURN.

(4) Obey all the oxygen safety precautions (Refer to AMM 35−00−00−910−801).

(5) Remove electrical power from the aircraft (Refer to AMM

24−00−00−861−802).

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

CB PANEL CB NO. NAME

ACPC ACPC CABIN FEED1

ACPC ACPC CABIN FEED2

CBP−1 M10 PASS SIGNS

CBP−1 P4 LIGHTS CAB UTIL

CBP−1 P8 PASS OXYGEN MANUAL DEPLOY R

CBP−1 P9 PASS OXYGEN MANUAL DEPLOY L

CBP−1 Q6 AUDIO PILOT

CBP−1 Q7 AUDIO C/PLT

CBP−1 Q8 AUDIO OBS

CBP−1 LOWER S11 PWR SENS

CBP−2 LOWER U3 EMER LTS

CBP−2 LOWER V2 AUDIO PILOT

CBP−2 B8 GALLEY EXHAUST FAN

CBP−2 B11 GALLEY HEATER

CBP−2 D8 WATER SYSTEM

CBP−2 F11 GALLEY HEATER CONT

CBP−2 H4 AUDIO OBS

CBP−2 M6 LIGHTS GALLEY AREA

CBP−2 P9 PASS OXYGEN AUTO DEPLOY R
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

CB PANEL NAME CB NO.

CBP−2 P10 PASS OXYGEN AUTO DEPLOY L

CBP−2 P11 CREW OXYGEN MONITOR

CBP−2 Q3 CABIN INPH

CBP−2 Q4 PASS ADDR

(7) Depressurize the crew oxygen system (Refer to AMM 35−10−00−862−801).

(8) Remove the oxygen mask stowage-box of the third crew (Refer to AMM

35−11−15−000−801).

(9) Remove the entrance storage compartment (Refer to AMM

25−24−13−000−801).

(10) Remove the flight compartment door (Refer to AMM 25−17−01−000−801).

(11) Remove Galley 1 (Refer to AMM 25−31−01−000−802).

(12) Remove the passenger compartment floor panels that follow:

PANEL NAME REFERENCE

231BLF Passenger Compartment Floor PanelsAMM 53−00−47−000−802

232BRF Passenger Compartment Floor PanelsAMM 53−00−47−000−802

(13) Remove the flight controls access−panel on the copilot side (Refer to AMM

53−12−32−000−801).

(14) Remove the floor panel on the copilot side control−column floor−panel

(Refer to AMM 25−15−10−00−801).

(15) Remove the crew escape hatch (Refer to AMM 52−22−00−000−801).

(16) Remove the oxygen pressure switch (Refer to AMM 35−11−09−000−801).

(17) Open the main avionics-compartment door.
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Revision B, May 06/2013

(18) Remove the access panels that follow:

PANEL NAME REFERENCE

221DZ Pilot/copilot Side−Console Panel AMM 25−15−07−000−801

222DZ Pilot/Copilot Side−Console Panel AMM 25−15−07−000−801

132 AR Flight Controls Access Panel AMM 53−12−32−000−801
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

B. Procedure

Refer to Figure 1.

(1) Remove and discard the oxygen flex hose (13) from the oxygen bottle

between FS295.00 and FS310.00.

(2) Remove and discard the oxygen flex hose (12) from the elbow fitting (26)

between FS295.00 and FS280.00.

(3) Remove and discard the two oxygen flex hoses (10) from the co-pilot and

pilot stowage boxes between FS265.00 and FS250.00.

Refer to Figure 2.

(4) Clean the swaged end-fittings of the tubes and unions of the low-pressure

crew oxygen system as follows:

(5) Clean the two mating ends, male and female threaded parts, of every

disassembled end-fitting with Methyl Propyl Ketone (MPK).

NOTE: It is not necessary to remove the bonding jumpers.

NOTE: You can loosen or remove clamps as necessary to get better access to

the end-fittings.

(a) At FS295.00, disconnect the 90-degree tube (9) from the bulkhead tee

fitting (27).

CAUTION:PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS

AND CAUSE DAMAGE TO COMPONENTS.

(b) With a clean cloth moisten with MPK, manually clean the swaged

end-fittings of the 90-degree tube (9) and the bulkhead tee fitting (27).

(c) Clean all the surfaces of the end-fitting, the 90-degree tube (9), and the

threads of the bulkhead tee fitting (27).

(d) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fittings and the threads.

(e) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are without contaminants.
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

(f) When all the parts are cleaned and dried, connect the 90-degree tube

(9) to the bulkhead tee fitting (27) at FS295.00.

(6) Disconnect the vertical tube (7) and the observer tube (8) from the bulkhead

tee fitting (27) at FS295.00.

(7) Clean the two mating ends, male and female threaded parts, of every

disassembled end fitting with MPK as follows:

NOTE: It is not necessary to remove the bonding jumpers.

NOTE: You can loosen or remove clamps as necessary to get better access to

the end-fittings.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the end-fittings of

the vertical tube (7), the observer tube (8) and the bulkhead tee fittings

(27).

(b) Clean all the surfaces of the end-fitting, the vertical tube (7), the observer

tube (8), and the bulkhead tee fittings (27).

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fitting and the threads.

(d) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are without contaminants.

(e) When all the parts are cleaned and dried, connect the vertical tube (7)

and the observer tube (8) to the bulkhead tee fitting (27) at FS295.00.

(8) Disconnect the elbow fitting (26) from the observer tube (8) at FS295.00.

(9) Clean the two mating ends, male and female threaded parts, of every

disassembled end-fitting with MPK.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the swage

end-fittings of the observer tube (8) and the elbow fitting (26).
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

(b) Clean all the surfaces of the end-fitting, the observer tube (8), and the

elbow fitting (26).

(c) Manually apply MPK on a cotton swab or a cloth and clean the inner wall

of the elbow fitting (26).

(d) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fittings and the threads.

(e) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are without contaminants.

(f) When all the parts are cleaned and dried, connect elbow fitting (26) to

the observer tube (8) at FS295.00.

(10) Disconnect the vertical tube (7) from the lateral tube (4) between FS295.00

and FS280.00.

(11) Clean the two mating ends, male and female threaded parts, of every

disassembled end-fitting with MPK as follows:

NOTE: It is not necessary to remove the bonding jumpers.

NOTE: You can loosen or remove clamps as necessary to get better access to

the end-fittings.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the end-fittings of

the vertical tube (7) and the end-fittings of the lateral tube (4).

(b) Clean all the surfaces of the end-fitting, the vertical tube (7), and the

lateral tube (4).

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fittings and the threads.

(d) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are without contaminants.

(e) When all the parts are cleaned and dried, connect the vertical tube (7) to

the lateral tube (4) between FS295.00 and FS280.00.
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

(12) Disconnect the pilot tube (3) from the lateral tube (4) between FS295.00 and

FS280.00.

(13) Clean the two mating ends, male and female threaded parts, of every

disassembled end-fitting with MPK as follows:

NOTE: It is not necessary to remove the bonding jumpers.

NOTE: You can loosen or remove clamps as necessary to get better access to

the end-fittings.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the end-fittings of

the pilot tube (3) and the tee end-fittings of lateral tube (4).

(b) Clean all the surfaces of the end-fittings, the pilot tube (3), and the lateral

tube (4).

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fittings and the threads.

(d) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are without contaminants.

(e) When all the parts are cleaned and dried, connect the pilot tube (3) to

the lateral tube (4) between FS295.00 and FS280.00.

(14) Disconnect the pilot tube (3), the union (14). and the pilot tube (1) at

FS280.00.

(15) Clean the two mating ends, male and female threaded parts, of every

disassembled end-fitting with MPK as follows:

NOTE: It is not necessary to remove the bonding jumpers.

NOTE: You can loosen or remove clamps as necessary to get better access to

the end-fittings.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

(a) With a clean cloth moisten with MPK, manually clean the end-fittings of

the pilot tube (3), the end-fittings of the pilot tube (1) and threads of

union (14) .

(b) Clean all the surfaces of the end-fitting, the pilot tube (3), the pilot tube

(1), and the union (14).

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fittings and threads.

(d) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are without contaminants.

(e) When all the parts are cleaned and dried, connect the pilot tube (3) and

the lateral pilot tube (1) to the union (14) at FS280.00.

(16) Disconnect the lateral tube (4) from the lateral tube (5) between FS295.00 and

FS280.00.

(17) Clean the two mating ends, male and female threaded parts, of every

disassembled end-fitting with MPK as follows:

NOTE: It is not necessary to remove the bonding jumpers.

NOTE: You can loosen or remove clamps as necessary to get better access to

the end-fittings.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the end-fittings of

the lateral tube (4) and the end-fittings of the lateral tube (5).

(b) Clean all the surfaces of the end-fitting, the lateral tube (4), and the

lateral tube (5).

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fittings and the threads.

(d) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are free of contaminants.

(e) When all the parts are cleaned and dried, connect the lateral tube (4) to

the lateral tube (5) between FS295.00 and FS280.00.
SERVICE BULLETIN 670BA−35−012

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Revision B, May 06/2013

(18) Disconnect the lateral tube (5) from the lateral tube (6) between FS295.00 and

FS280.00.

(19) Clean both mating ends, male and female threaded parts, of every

disassembled end-fitting with MPK as follows:

NOTE: It is not necessary to remove the bonding jumpers.

NOTE: You can loosen or remove clamps as necessary to get better access to

the end-fittings.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the swage

end-fittings of the lateral tube (5) and the swage end-fittings of the lateral

tube (6).

(b) Clean all the surfaces of the end-fitting, the lateral tube (5), and the

lateral tube (6).

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fitting and the threads.

(d) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are without contaminants.

(e) When all the parts are cleaned and dried, connect the lateral tube (5) to

the lateral tube (6) between FS295.00 and FS280.00.

(20) Disconnect the lateral tube (6), the union (14), and the co-pilot tube (2) at

FS280.00.

(21) Clean both mating ends, male and female threaded parts, of every

disassembled end-fitting with MPK as follows:

NOTE: It is not necessary to remove the bonding jumpers.

NOTE: You can loosen or remove clamps as necessary to get better access to

the end-fittings.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 18 of 42

June 23/2012

Revision B, May 06/2013

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the swage

end-fittings of the lateral tube (6), the co-pilot tube (2), and the union

(14) threads.

(b) Clean all the surfaces of end-fittings, the lateral tube (6), the co-pilot tube

(2), and the union (14).

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fitting and the threads.

(d) If necessary, do the manual cleaning operation again until the

end-fittings and the threads are without contaminants.

(e) When all the parts are cleaned and dried, connect the lateral tube (6)

and the co-pilot tube (2) to the union (14) at FS280.00.

(22) Remove the union fitting (21) from the pilot and the co-pilot mask

stowage-box between FS265.00 and FS250.00.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the threads and the

inner wall of the union fitting (21).

(b) Clean all the surfaces of the threads and the inner diameter of the union

fitting (21).

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the end-fittings and the threads.

(d) If necessary, do the manual cleaning operation again until the threads

and the inner diameter are without contaminants.

(e) When all the parts are cleaned and dried, connect the union fitting (21)

to the pilot, and the co-pilot mask stowage-box between FS265.00 and

FS250.00.

Refer to Figure 5.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 19 of 42

June 23/2012

Revision B, May 06/2013

(23) Remove the union fitting (1) from the third crew mask stowage-box.

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the threads and in

the inner wall of the union fitting (1).

(b) Clean all surfaces of the threads and the inner diameter of the union

fitting (1).

(c) Visually inspect all surfaces to make sure that there is no oil residue on

the end-fittings and the threads.

(d) If necessary, do the manual cleaning operation again until the threads

and the inner wall are without contaminants.

(e) When the part is cleaned and dried, connect the union fitting (1) to the

third crew mask stowage-box.

Refer to Figure 1 .

(24) Clean the union fitting (24) in the pilot and the co-pilot console as follows:

NOTE: Do not remove the union fiting (24) from the pilot and the co-pilot floor

console. Do the manual cleaning in the area of the upper end of the

union fitting (24).

CAUTION: PUT PROTECTION BENEATH THE CLEANING AREA. THIS WILL

PREVENT THE CLEANING FLUID FROM SPILLING ON AREAS AND

CAUSE DAMAGE TO COMPONENTS.

(a) With a clean cloth moisten with MPK, manually clean the threads and the

inner diameter of the union fitting (24) between FS265.00 and FS250.00.

(b) Clean all surfaces of the threads and the inner diameter of the union

fitting (24).

(c) Visually inspect all surfaces to make sure there is no oil residue on the

end-fittings and threads.

(d) If necessary, do the manual cleaning operation again until the threads

and the inner wall are without contaminants.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 20 of 42

June 23/2012

Revision B, May 06/2013

(25) Manually clean the pressure switch as follows:

CAUTION: MAKE SURE MPK DOES NOT GET INTO THE PRESSURE SWITCH. MPK

CAN CAUSE DAMAGE TO THE PRESSURE SWITCH.

(a) With a clean cloth moisten with MPK, manually clean the threads of the

pressure switch.

(b) Clean all the surfaces of the threads of the pressure switch.

(c) Visually inspect all the surfaces to make sure that there is no oil residue

on the threads of the pressure switch.

(d) If necessary, do the manual cleaning operation until the threads are

without contaminants.

(e) Do a detailed inspection of the pressure switch. Make sure there is no

internal contamination.

(f) If the pressure switch has signs of internal contamination, discard the

pressure switch.

Refer to Figure 3.

(26) Do the preparation for the solvent flushing procedure of the crew-oxygen

system in the cockpit as follows:

NOTE: For solvent flushing tools 670BA35012 TOOL -1, 670BA35012 TOOL -2

and 670BA35012 TOOL -3, Refer to Appendix A.

(a) Connect the hose assembly (50) with the female end-fitting (32) to the

pilot union (24).

(b) Connect the hose assembly (40) with the female end-fitting (32) to the

copilot union (24).

(c) Put the hose (15) through the opening at the base of the copilot control

column and through the flight-control access-panel opening between

FS169 and FS202.

(d) Put the evacuation hose (15) in the graduated pail (28).

(27) Prepare for the solvent flushing procedure of the crew oxygen system

between FS295.00 and 280.00 as follows:
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 21 of 42

June 23/2012

Revision B, May 06/2013

NOTE: You can cut the inlet tube of the pump (17) to adjust to the height

of the 5 US gallon (18.93 L) container of MPK.

(a) Connect the male adapter (18) from the pump assembly (17) to the 90-

degree tube (9).

(b) Connect the hose assembly (60) with the female end-fitting (32) to the

elbow fitting (26).

(c) At the other end of the hose (60) close the lower end with the metal cap

(16).

(28) Do the solvent flushing procedure as follows:

CAUTION: DURING THE SOLVENT FLUSHING, TWO PERSONS ARE NECESSARY.

THIS WILL PREVENT INJURIES TO PERSONNEL AND DAMAGE TO THE

EQUIPMENT AND AIRCRAFT.

(a) Put the 5 US gallon (18.93 L) container of MPK at the main doorstep.

(b) With the pump assembly (17), fill the crew oxygen-system lines with

MPK until the flow is stable and continuous.

(c) Close the crew oxygen system with the metal cap (16) on the evacuation

hose (15). Make sure that the oxygen lines stay filled and do not drain.

(29) Do the solvent flushing of the upper portion of the oxygen system as follows:

CAUTION: DURING THE SOLVENT FLUSHING, TWO PERSONS ARE NECESSARY.

THIS WILL PREVENT INJURIES TO PERSONNEL AND DAMAGE TO THE

EQUIPMENT AND AIRCRAFT.

(a) Hold the graduated pail (28) under the hose (60) at FS295.00.

(b) Remove the metal cap (16) from the hose (60) between FS295.00 and

FS280.00.

(c) With the pump assembly (17), fill the upper stream of the crew oxygen

system until the flow is stable and continuous.

(d) Close the crew oxygen system with the metal cap (16) on the hose (60)

between FS295.00 and FS280.00. Make sure that the oxygen lines stay

filled and do not drain.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 22 of 42

June 23/2012

Revision B, May 06/2013

(e) Let the MPK stay in the crew oxygen-system tubes for a minimum of 20

minutes.

(30) Do the transfer of solvent in the upper stream of the oxygen system as

follows:

CAUTION: DURING THE SOLVENT FLUSHING, 2 PERSONS ARE NECESSARY.

THIS WILL PREVENT INJURIES TO PERSONNEL AND DAMAGE TO THE

EQUIPMENT AND AIRCRAFT.

CAUTION: PUT PROTECTION ON THE AREA BEFORE REMOVING THE METAL

CAP (16). THIS WILL PREVENT INJURIES TO PERSONNEL AND

DAMAGE TO THE EQUIPMENT AND AIRCRAFT.

(a) Hold the graduated pail (28) under the hose (60) at FS295.00.

(b) Remove the metal cap (16) from the hose (60) at FS295.00.

(c) With the pump assembly (17) transfer 0.5 US gallon (1.9 L) into the

graduated pail (28) at FS295.00.

(d) Close the crew oxygen system with the metal cap (16) on the hose (60)

between FS295.00 and FS280.00.

(31) Do the transfer of solvent in the down stream of the oxygen system as follows:

CAUTION: DURING THE SOLVENT FLUSHING, 2 PERSONS ARE NECESSARY.

THIS WILL PREVENT INJURIES TO PERSONNEL AND DAMAGE TO THE

EQUIPMENT AND AIRCRAFT.

(a) Remove the metal cap (16) from the evacuation hose (15) at the

graduated pail (28).

(b) With the pump assembly (17), transfer 2.5 US gallon (9.5 L) from the 5

US gallon (18.93 L) container into the graduated pail (28).

CAUTION:PUT PROTECTION ON THE AREA BEFORE YOU REMOVE THE

PUMP ASSEMBLY (17). THIS WILL PREVENT INJURIES TO

PERSONNEL AND DAMAGE TO THE EQUIPMENT AND AIRCRAFT.

(c) Remove the pump assembly (17) from the 90-degree tube (9) at

FS295.00.

(d) Remove the 5 US gallon (18.93 L) container at the main doorstep.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 23 of 42

June 23/2012

Revision B, May 06/2013

Refer to Figure 4.

(32) Remove the remaining solvent from the observer tube as follows:

CAUTION: DURING THE REMOVAL OF THE MPK, TWO PERSONS ARE

NECESSARY. THIS WILL PREVENT INJURIES TO PERSONNEL AND

DAMAGE TO THE EQUIPMENT AND AIRCRAFT.

(a) Remove the metal cap (16) from the hose (60) at FS295.00.

(b) Connect the nitrogen supply (29) to the 90-degree tube (9) at FS295.00.

NOTE: Use the shortest hose possible to connect the nitrogen supply to

the 90 degree tube.

(c) Close the crew oxygen system with the metal cap (16) on the evacuation

hose (15).

(d) Hold the hose (60) with one hand and hold a clean cloth with the other

hand at the open end of the hose (60) between FS295.00 and FS280.00.

(e) Gradually open the nitrogen supply (29) to 80 psi (5.52 BAR).

(f) Let the nitrogen flow for a minimum of one minute and until no solvent

spits out.

(g) Gradually close the nitrogen supply to 10 psi maximum (0.69 BAR).

(h) Loosen the metal cap (16) from the evacuation hose (15) and hold the

evacuation hose (15) in the collector pail (25).

(i) Close the crew oxygen system with the metal cap (16) on the hose (60)

between FS295.00 and FS280.00.

(j) Remove the metal cap (16) from the evacuation hose (15).

(33) Remove the solvent in the crew oxygen tubes as follows:

CAUTION: DURING THE REMOVAL OF THE MPK IN THE CREW OXYGEN TUBES,

TWO PERSONS ARE NECESSARY. THIS WILL PREVENT INJURIES TO

PERSONNEL AND DAMAGE TO THE EQUIPMENT AND AIRCRAFT.

(a) Hold the evacuation hose (15) in the collector pail (25) at the beginning.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 24 of 42

June 23/2012

Revision B, May 06/2013

(b) Gradually open the nitrogen supply (29) to 80 psi (5.52 BAR).

(c) Gradually remove the evacuation hose (15) from the collector pail (25)

and hold a cloth at the end of the evacuation hose (15).

(d) Let the nitrogen flow for a minimum of one minute and until no solvent

spits out.

(e) Close the nitrogen supply (29).

Refer to Figure 3.

(f) Disconnect the hose assembly (50) from the union (24).

(g) Disconnect the hose assembly (40) from the union (24).

Refer to Figure 4.

(h) Disconnect the hose assembly (60) from the elbow fitting (26).

(i) Gradually open the nitrogen supply (29) to 10 psi (0.69 BAR).

Refer to Figure 3.

(j) Make sure there is a flow of nitrogen at the unions (24) on the pilot and

the copilot side.

Refer to Figure 4.

(k) Make sure there is a flow of nitrogen at the elbow fitting (26).

(l) Let nitrogen flow in the system for 10 minutes.

(m) Close the nitrogen supply.

(n) Connect the hose assembly (60) from the elbow fitting (26).

Refer to Figure 3.

(o) Connect the hose assembly (50) from the union (24).

(p) Connect the hose assembly (40) from the union (24).

(q) Install the metal cap (16) on the evacuation hose (15).

Refer to Figure 4.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 25 of 42

June 23/2012

Revision B, May 06/2013

(r) Make sure the metal cap (16) is removed from the hose assembly (60)

(s) Hold the hose (60) with one hand and hold a clean cloth with the other

hand at the open end of the hose (60) between FS295.00 and FS280.00.

(t) Gradually open the nitrogen supply to 80 psi (5.52 BAR).

(u) Let the nitrogen flow for a minimum of one minute.

(v) Make sure no liquid spits out.

(w) Close the nitrogen supply (29).

(x) Install the metal cap (16) on the hose assembly (60).

(y) Remove the metal cap (16) from the evacuation hose (15).

(z) Hold the hose (15) with one hand and hold a clean cloth with the other

hand at the open end of the hose (15).

(aa) Gradually open the nitrogen supply (29) to 80 psi (5.52 BAR).

(ab) Let the nitrogen flow for a minimum of one minute.

(ac) Make sure no liquid spits out.

(ad) Close the nitrogen supply (29).

(ae) Remove the nitrogen supply (29) from the 90−degree tube (9) at

FS295.00.

Refer to Figure 3.

(34) Remove parts of the flushing and drying procedure of the crew oxygen

system as follows:

CAUTION: DO NOT USE THE SOLVENT FROM THE COLLECTOR PAIL (25) AND

THE GRADUATED PAIL (28) FOR ANOTHER CLEANING PROCEDURE

OF THE CREW OXYGEN SYSTEM. THE MPK COLLECTED DURING THE

PROCEDURE IS CONTAMINATED.

(a) Remove the graduated pail (28) and the collector pail (25).
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 26 of 42

June 23/2012

Revision B, May 06/2013

(b) Remove the hose assembly (40), (50) and (15) with the female

end-fittings (32) at the union (24) from the pilot and copilot side console

panel .

CAUTION: DO NOT USE MPK FROM THE GRADUATED PAIL (28) FOR

ANOTHER CLEANING PROCEDURE OF THE CREW OXYGEN

SYSTEM. THE MPK COLLECTED DURING THE PROCEDURE IS

DIRTY.

(c) Remove the graduated pail (28) between FS295.00 and FS280.00.

(d) Remove the hose assembly (60) with the female end-fitting (32) at the

elbow fitting (26) between FS295.00 and FS280.00 .

Refer to Figure 1.

(35) Install the flex hose (10) on the union (24) and on the fitting adapter (21) on

the stowage box (30) at the pilot and the copilot console.

(36) Install the flex hose (12) at the elbow fitting (26) between FS295.00 and

FS280.00.

(37) Close the flex hose (12) with the metal cap (16) between FS295.00 and

FS280.00.

(38) Install the oxygen pressure switch (Refer to AMM 35−11−09−400−801).

(39) If removed install the oxygen cylinder (Refer to AMM 35−11−03−400−801).

(40) Install the flex hose (13) on the oxygen cylinder (11) and on the oxygen

pressure switch at FS295.00.

(41) If clamps were loosen or removed during the manual cleaning procedure,

install the clamps and torque the threaded fasteners (Refer to AMM

20−21−00−910−801).

(42) If humiseal was removed from the bonding jumper of the oxygen crew lines

during the manual cleaning procedure, apply humiseal on the bonding

jumper.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 27 of 42

June 23/2012

Revision B, May 06/2013

C. Job Close-Out

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

(2) Obey all the oxygen safety precautions (Refer to AMM 35−00−00−910−801).

(3) Obey all the oxygen servicing safety precautions (Refer to AMM

35−00−00−910−802).

(4) Do the servicing of the crew oxygen system (Refer to AMM

12−16−35−614−801).

(5) Pressurize the crew oxygen system (Refer to AMM 35−10−00−862−802).

(6) Do the leak test of the crew oxygen system (Refer to AMM

35−10−00−790−801).

(7) Depressurize the crew oxygen system (Refer to AMM 35−10−00−862−801).

(8) Install the passenger compartment floor-panels that follow:

PANEL NAME REFERENCE

231BLF Passenger Compartment Floor PanelsAMM 53−00−47−400−802

232BRF Passenger Compartment Floor PanelsAMM 53−00−47−400−802

132 AR Flight Controls Access Panel AMM 53−12−32−400−801

(9) Install Galley 1 (Refer to AMM 25−31−01−400−802).

(10) Install the flight compartment door (Refer to AMM 25−17−01−400−801).

(11) Install the entrance storage compartment (Refer to AMM

25−24−13−400−801).

(12) Remove the the metal cap (16) from the flex hose between FS295.00 and

FS280.00.

(13) Install the oxygen mask stowage-box of the third crew (Refer to AMM

35−11−15−400−801).
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 28 of 42

June 23/2012

Revision B, May 06/2013

(14) Install the right-hand side flight controls access-panel 132 AR (Refer to AMM

53−12−32−400−801).

(15) Install the copilot column floor-panel (Refer to AMM 25−15−10−400−801).

(16) Install the crew escape hatch (Refer to AMM 52−22−00−400−801).

(17) Remove the tags and close the circuit breakers that follow:

CB PANEL CB NO. NAME

ACPC ACPC CABIN FEED1

ACPC ACPC CABIN FEED2

CBP−1 M10 PASS SIGNS

CBP−1 P4 LIGHTS CAB UTIL

CBP−1 P8 PASS OXYGEN MANUAL DEPLOY R

CBP−1 P9 PASS OXYGEN MANUAL DEPLOY L

CBP−1 Q6 AUDIO PILOT

CBP−1 Q7 AUDIO C/PLT

CBP−1 Q8 AUDIO OBS

CBP−1 LOWER S11 PWR SENS

CBP−2 LOWER U3 EMER LTS

CBP−2 LOWER V2 AUDIO PILOT

CBP−2 B8 GALLEY EXHAUST FAN

CBP−2 B11 GALLEY HEATER

CBP−2 D8 WATER SYSTEM

CBP−2 F11 GALLEY HEATER CONT

CBP−2 H4 AUDIO OBS

CBP−2 M6 LIGHTS GALLEY AREA

CBP−2 P9 PASS OXYGEN AUTO DEPLOY R

CBP−2 P10 PASS OXYGEN AUTO DEPLOY L

CBP−2 P11 CREW OXYGEN MONITOR
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 29 of 42

June 23/2012

Revision B, May 06/2013

CB PANEL NAME CB NO.

CBP−2 Q3 CABIN INPH

CBP−2 Q4 PASS ADDR

(18) Install the access panels that follow:

PANEL NAME REFERENCE

221DZ Pilot/copilot Side−Console PanelAMM 25−15−07−400−801

222DZ Pilot/Copilot Side−Console PanelAMM 25−15−07−400−801

(19) Do the servicing of the crew oxygen system (Refer to AMM

12−16−35−614−801)

(20) Pressurize the crew oxygen system (Refer to AMM 35−10−00−862−802)

(21) Do the leak test of the crew oxygen system (Refer to AMM

35−10−00−790−801).

(22) Do the operational test of the crew oxygen system as follows:

(a) On the pilot oxygen mask stowage-box, push and hold down the PRESS

TO TEST AND RETEST lever for two to three seconds.

(b) Make sure that the flow indicator shows a yellow cross which changes to

black.

(c) Repeat steps (a) and (b) two times for the three oxygen stowage boxes.

(23) Close the main avionics-compartment door.

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

logbooks: Service Bulletin 670BA−35−012 Revision B, Oxygen − Crew

Oxygen System − In-Service Crew-Oxygen-System Cleaning, incorporated."
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 30 of 42

June 23/2012

Revision B, May 06/2013

Removal and Installation of Flex Hoses

Figure 1 (Sheet 1 of 1)

ba7416a01.cgm_cr/25−apr−2012

B

A

A

B

C

C

13

8 D

D

FS295.00

FS295.00

PILOT MASK

STOWAGE

BOX (REF)

D

FS265.00

RIGHT SIDE SHOWN

LEFT SIDE SIMILAR

24

26

12

21

10

LEGEND

 8. Tube, observer.

10. Flex hose.

12. Flex hose.

13. Flex hose.

21. Fitting adapter.

24. Union fitting.

26. Elbow fitting.

COCKPIT

FLOOR

(REF)
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 31 of 42

June 23/2012

Revision B, May 06/2013

Manual Cleaning End−Fittings and Threads

Figure 2 (Sheet 1 of 3)

ba7417a01.cgm/cr/25−apr−2012

A

A

PILOT MASK

STOWAGE

BOX (REF)

BULKHEAD TEE

FITTING (REF)

B

C

D

E F

F

END

FITTING

(REF)

END

FITTING

(REF)

END

FITTING

(REF)

BULKHEAD

FITTING

(REF)

END

FITTING

(REF)

FITTING

(REF)

TEE

FITTING

(REF)

BULKHEAD

FITTING

(REF)

COPILOT MASK

STOWAGE BOX

(REF)
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 32 of 42

June 23/2012

Revision B, May 06/2013

Manual Cleaning End−Fittings and Threads

Figure 2 (Sheet 2 of 3)

ba7417a02.cgm/cr/26−apr−2012

9

27

7

26

B

FS295.00

8

C

7

1 14

3

4

LEGEND

 1. Pilot tube.

 3. Pilot tube.

 4. Lateral tube.

 7. Vertical tube.

 8. Obsrever tube.

 9. 90 degree tube.

14. Union.

26. Elbow fitting.

27. Bulkhead tree fitting.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 33 of 42

June 23/2012

Revision B, May 06/2013

Manual Cleaning End−Fittings and Threads

Figure 2 (Sheet 3 of 3)

5

4

6

D

LEGEND

 2. Co−Pilot tube.

 4. Lateral tube.

 5. Lateral tube.

 6. Lateral tube.

14. Union.

21. Fitting adapter.

24. Bulkhead union fitting.

30. Mask stowage box.

FS295.00

RBL37.00

2

14

6

E

ba7417a03.cgm/cr/rb, 25−apr−2012

FS265.00

LBL12.00

RBL12.00

RIGHT SIDE SHOWN

LEFT SIDE SIMILAR

F

30

24

COCKPIT

FLOOR (REF)

21
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 34 of 42

June 23/2012

Revision B, May 06/2013

Flushing of the Oxygen System

Figure 3 (Sheet 1 of 3)

ba7421a01.cgm_sd, 5 oct 2012

A

A

B

FS295.00

B

20

17

9

26

FS295.00

32

60

32

16

8

9

18

C

17 (REF)

LEGEND

 8. Tube, observer.

 9. 90−Degree tube.

16. Metal cap.

17. Manual drum pump.

18. Male end−adapter.

20. 5 gallons (18.93L).

24. Bulkhead union−fitting.

28. Graduated pail.

32. Female end−fitting.

60. Hose assembly.

28
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 35 of 42

June 23/2012

Revision B, May 06/2013

Flushing of the Oxygen System

Figure 3 (Sheet 2 of 3)

ba7421a02.cgm, sd 19juillet/2012

50

C

D

E

D

40 D

RIGHT SIDE SHOWN

LEFT SIDE SIMILAR

24

32

50

40

COCKPIT

FLOOR (REF)

15

E

50

15

40

LEGEND

15. Hose assembly.

24. Union fitting.

32. Female end−fitting.

40. Hose assembly.

50. Hose assembly.
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 36 of 42

June 23/2012

Revision B, May 06/2013

Flushing of the Oxygen System

Figure 3 (Sheet 3 of 3)

ba7421a03.cgm, sd, 5 oct 2012

28

15

16

15

32

25

LEGEND

15. Hose assembly.

16. Metal cap.

25. Collector pail.

28. Graduated pail.

32. End fitting.

G

F

G
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 37 of 42

June 23/2012

Revision B, May 06/2013

Purging and Drying the Oxygen System

Figure 4 (Sheet 1 of 2)

ba7424a01.cgm_cr/27−apr−2012

A

A

B

FS295.00

B

9

26

FS295.00

8

9

29

LEGEND

 8. Tube, observer.

 9. 90−Degree tube.

15. Hose assembly.

16. Metal cap.

18. Male end−adapter

24. Bulkhead union−fitting.

26. Elbow fitting.

29. Nitrogen supply.

32. Female end−fitting.

60. Hose assembly.

29

32

60

32

16

C
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 38 of 42

June 23/2012

Revision B, May 06/2013

Purging and Drying the Oxygen System

Figure 4 (Sheet 2 of 2)

25

ba7424a02.cgm_cr/27−apr−2012

C

D

D

15

16

LEGEND

15. Hose assembly.

16. Metal cap.

25. Collector pail.

32. Female end fitting.

15

32
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 39 of 42

June 23/2012

Revision B, May 06/2013

Third Crew Mask Stowage Box

Figure 5 (Sheet 1 of 1)

ba7524a01.cgm, sd 19juillet/2012

A

THIRD CREW MASK

STOWAGE BOX

(REF)

CONNECTOR

LEGEND

1. Union fitting.

A

1
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 40 of 42

June 23/2012

Revision B, May 06/2013

3. MATERIAL INFORMATION

A. Kit Information

Kit Contents:

KIT 670BA35012K1

PART

NUMBER QUANTITY NAME ALTERNATEPARTS NOTES

38019−5−0110 2 Flex Hose Assembly

Pilot and Co−Pilot

− −

S6946−03 1 Flex Hose Assembly

Observer

− −

S6946−04 1 Flex Hose Assembly

Regulator

− −

KIT 670BA35012K90A

PART NUMBER QUANTITY NAME ALTERNATE

PARTS NOTES

0208P−8−4 1 Brass Reducer

Coupling

−

125HBL−4−4 1 Brass Barbed Fitting −

2808K171 1 Tee Fitting −

30182−8−12b 1 Brass Barbed Fitting −

4HA27 1 Drum Pump Assembly −

5229−05 5 Plug Male (JIC) 37o −

5388K14 10 Hose Clamps −

5388K24 1 Hose Clamps −

5549K33 1 2 Feet hose,

Polyurethane Tubing

1/4" ID, 3/8" OD

−
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 41 of 42

June 23/2012

Revision B, May 06/2013

PART NUMBER NOTES ALTERNATE

PARTS QUANTITY NAME

5549K35 1 25 Feet hose,

Polyurethane Tubing

5/16" ID, 7/16" OD

−

M12510−04−05 1 Adapter,1/4 ID, Male

Thread

−

M22512−05−05 5 End Fittings, Female −

Equivalent or commercially available equipment that can be used with MPK solvent.

KIT 670BA35012K91

PART

NUMBER QUANTITY NAME ALTERNATEPARTS NOTES

0208P−8−4 1 Brass Reducer

Coupling

−

5549K33 1 2 Feet hose,

Polyurethane Tubing

1/4" ID, 3/8" OD

−

5549K35 1 25 Feet hose,

Polyurethane Tubing

5/16" ID, 7/16" OD

−

Equivalent or commercially available equipment that can be used with MPK solvent.

B. Consumable Information

The materials that follow are necessary to do this service bulletin. You can order

them from Bombardier or purchase them 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

MIL−STD−608 5 Gallon Methyl Propyl

Ketone (UHP)

 
SERVICE BULLETIN 670BA−35−012

SB 670BA−35−012

Page 42 of 42

June 23/2012

Revision B, May 06/2013

SPECIFICATION REFERENCE QUANTITY NAME

Cloth, Lint−Free

Cotton

As

necessary

Cloth 05−332 

Protective coating As

necessary

Humiseal−1B15 09−021 

Refer to AMM 51−31−00−992−801.

 You can use Methyl Ethyl Ketone ASTM D740 Type 1 at same purity.

 UHP (Ultra High Purity) = 99.5% minimum

NOTE: To complete this list of consumables, refer to the different tasks as

references in this service bulletin.

C. Special Tools and Equipment

SPECIAL TOOLS AND EQUIPMENT

PART NUMBER QUANTITY NAME ALTERNATE

PARTS

S−7914WS 1 Pail, 5 Gallon capacity 

F−1727−001 1 Wash Bottle

(ProlabScientific)



7002 2 Graduated Pail 

(#7002 Gemblers)



Equivalent or commercially available equipment that can sustain MPK

solvent.

NOTE: To complete this list of special tools and equipment, refer to the different

tasks, and the appendix that are given as references in this service

bulletin.

D. Disposition of Parts

Not applicable.

1 
APPENDIX A

Page A1 of A4

June 23/2012

Revision B, May 06/2013

PROCEDURE

The procedure contained in this appendix are given as references in the

ACCOMPLISHMENT INSTRUCTIONS of Service Bulletin 670BA ---35---012.
APPENDIX A

APPENDIX A

Page A2 of A4

June 23/2012

Revision B, May 06/2013

Appendix A gives the procedure to do the assembly of the materials for the

cleaning and flushing procedures given in Service Bulletin

670BA ---35 ---012.

Parts for tool assemblies 670BA35012--TOOL--1, 670BA35012--TOOL--2 and

670BA35012--TOOL--3

PART

NUMBER QUANTITY NAME ALTERNATEPARTS NOTES

4HA27 1 Manual Drum Pump --- ---

5388K14 12 Hose Clamps --- ---

5388K24 1 Hose Clamps --- ---

5549K33 1 Hose, Fluid Resistant

Polyurethane Tubing

1/4” ID, 3/8” OD

--- 2 Feet

hoses

5549K35 1 Hose, Fluid Resistant

Polyurethane Tubing

5/16” ID, 7/16” OD

--- 25 Feet

hoses

M22512---05---05 5 End-Fitting Female

Adapter

--- ---

2808K171 1 Tee Fitting --- ---

M12510---04---05 1 End Fitting Male

Adapter

--- ---

30182---8---12b 1 Brass Barbed Fitting --- ---

0208P ---8---4 1 Brass Reducer Fitting --- ---

125HBL ---4---4 1 Brass Reducer

Coupling

--- ---
APPENDIX A

APPENDIX A

Page A3 of A4

June 23/2012

Revision B, May 06/2013

Refer to Figure 1 A.

1. Make 670BA35012---TOOL ---1 as follows:

A. Cut hose part number (P/N) 5549K35 to a length of 60 in. (40.64 cm.), to

make item (60).

B. At the two ends of the hose (60), install the female end-fittings (32) and

attach with the clamp (19).

2. Make 670BA35012---TOOL ---2 as follows:

A. Cut hose P/N 5549K35 to a length of 16 in. (40.64 cm.), to make item

(40).

B. At one end of the hose (40), install the female end-fitting (32) and attach

with the clamp (19).

C. At the other end of the hose (40), install the tee fitting (33) and attach

with the clamp (19).

D. Cut hose P/N 5549K35 to a length of 6 ft (1.82 m.), to make item (50).

E. At one end of the hose (50), install the female end-fitting (32) and attach

with the clamp (19).

F. At the other end of the hose (50), install on the tee fitting (33) and attach

with the clamp (19).

G. Cut hose P/N 5549K35 to a length of 10 ft (3.05 m.), to make item (15).

H. At one end of the hose (15), install the female end-fitting (32) and attach

with the clamp (19).

I. At the other end, install the hose (15) on the tee fitting (33) and attach

with the clamp (19).

3. Make 670BA35012---TOOL ---3 as follows:

A. Assemble the brass barbed fitting (66) with the brass reducer coupling

(67) and the brass male barbed (68).
APPENDIX A

APPENDIX A

Page A4 of A4

June 23/2012

Revision B, May 06/2013

B. Cut hose P/N 5549K33 to a length of 24 in. (60.9 cm.), to make item (65).

C. Install the hose (65) on the brass male fitting (68) and attach with the

clamp (19).

D. At the other end of the hose (65) install the male end-adapter (18) and

attach with the clamp (19).

E. Install the manual drum pump (17) on the brass barbed fitting (66) and

attach with the clamp (69).
APPENDIX A

APPENDIX A

Page A5 of A4

June 23/2012

Revision B, May 06/2013

Special Tools and Equipement

Figure 1 (Sheet 1 of 1)

ba7487a01.cgm, cr,fp, 6--May--2013

LEGEND

15. Hose, 10 ft. (3.05 m)

5549K35.

17. Manual drum pump

4HA27.

18. Male end--adapter

M12510--04--05.

19. Hose clamp

5388K14.

32. End--fitting female adapter

M22512--05--05.

33. Tee--fitting

2808K171.

40. Hose, 18 in. (45.7 cm)

5549K35.

50. Hose, 6 ft. (1.82 m)

5549K35.

60. Hose, 60 in. (1.52 m)

5549K35.

65. Hose, 24 in. (60.9 cm)

5549K33.

66. Brass barbed fitting

30182--8--12b.

67. Brass reducer coupling

0208P--8--4.

68. Brass male barbed fitting

125HLB--44.

69. Clamp

5388K24.

670BA35012--TOOL--3

66

67

DRUM PUMP

(REF)

17

68

65

18

32 19

60

19

32

670BA35012--TOOL--1

32 19 50

19

33

19

40

32

19 32

15

19

670BA35012--TOOL--2

19

19

19

69
THANK YOU FOR ANSWERING THIS EVALUATION FORM 

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

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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: 

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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