Oxygen – Crew Oxygen System – Removal from Service of some Crew

Oxygen Cylinders and Regulator Assemblies

1. PLANNING INFORMATION

A. Effectivity

(1) Aircraft Affected:

Aircraft Model Service Aircraft Serial

Numbers

Production Aircraft

Serial Numbers

CL−600−2C10 10002 thru 10999 none

[1]

CL−600−2D15 and

CL−600−2D24

15001 thru 15990 none

[1]

CL−600−2E25 19001 thru 19990 none

[1]

[1] There is no production effectivity at this time.

With the following Cylinder and Regulator Assemblies (CRAs):

SERVICE BULLETIN

ATA SYSTEM: 35−10 NUMBER: 670BA−35−011

S.B. 670BA−35−011

Page 1 of 16

Jul 05/2011

Technical

Publications

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

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

DIVISION HAS INCLUDED THE NEW OPERATOR ON THE DISTRIBUTION LIST.

SUBJECT:
Table 1: Cylinder and Regulator Assemblies (CRA’s)

Part number: 806371−120

Serial number(s):

C08100387, C08100388, C08100389, C08100390, C08100391,

C08120736 , C08120737, C08120738, C08120739,

C09010080, C09010081, C09010082, C09010083, C09010084,

C09010379, C09010380, C09010381, C09010446 , C09010447,

C09010448, C09010450, C09010451

C09030125, C09030126 , C09030127, C09030128, C09030129,

C09030130, C09030131, C09030132, C09030133, C09030134,

C09030404, C09030405

C09050319, C09050320 , C09050321, C09050322

C09060107, C09060108, C09060109

C09070175, C09070176, C09070177, C09070178

C09080221, C09080222, C09080223, C09080224

C09090543, C09090544, C09090545, C09090546, C09090742,

C09090743

C09100220, C09100221, C09100222, C09100223, C09100224

C09120201

C10030705, C10030706

Part number: 806371–130

Serial number(s):

C08100201, C08100363, C08100626, C08100627, C08100629,

C08100630, C08100631, C0810063, C08100633, C08100634,

C08100635

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 2 of 16

Jul 05/2011
Table 1: Cylinder and Regulator Assemblies (CRA’s)

C08110063, C08110064, C08110066, C08110067, C08110069

C08120732, C08120733, C08120734, C08120735, C08120924,

C08120925, C08120926, C08120927, C08120928 C08120929,

C08120930, C08120931, C08121018, C08121019, C08121020,

C08121021, C08121022, C08121023, C08121024, C08121025,

C08121026, C08121027 C08121028, C08121149, C08121150,

C08121151, C08121152

C09010041, C09010042, C09010043, C09010044, C09010077,

C09010078, C09010079, C09010472, C09010473, C09010474,

C09010475, C09010476, C09010598, C09010599, C09010600,

C09010601, C09010602, C09010603, C09010604, C09010605,

C09010606, C09010607, C09010720, C09010721, C09010722,

C09010723, C09010724, C09010725, C09010726, C09010727,

C09010728, C09010729

C09020068, C09020069, C09020070, C09020071, C09020072,

C09020344, C09020345, C09020439, C09020440, C09020441,

C09020442, C09020443, C09020444, C09020445, C09020446,

C09020447, C09020448, C09020449, C09020450, C09020504,

C09020505

C09030216, C09030217, C09030218, C09030219, C09030220,

C09030221, C09030222, C09030223, C09030224, C09030225,

C09030226, C09030227, C09030228, C09030384, C09030385,

C09030386, C09030387, C09030388, C09030389, C09030390,

C09030391, C09030392, C09030393, C09030394, C09030395,

C09030396, C09030397, C09030398, C09030399, C09030400,

C09030401, C09030402, C09030403, C09030819, C09030820,

C09030821, C09030822, C09030823, C09030824, C09030825,

C09030826

C09040594, C09040595, C09040596, C09040597, C09040598,

C09040599, C09040600, C09040601, C09040602, C09040603,

C09040604, C09040605

C09050123, C09050124, C09050323, C09050324, C09050325,

C09050326, C09050462, C09050463, C09050464, C09050465,

C09050466, C09050467, C09050468, C09050469

C09060094, C09060135, C09060136, C09060137, C09060138,

C09060139, C09060140, C09060141, C09060142, C09060143,

C09060144, C09060322, C09060517, C09060518, C09060519,

C09060520, C09060521, C09060522, C09060523

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 3 of 16

Jul 05/2011
Table 1: Cylinder and Regulator Assemblies (CRA’s)

C09070168, C09070169, C09070170, C09070171, C09070172,

C09070173, C09070174

C09080237, C09080238, C09080239, C09080240, C09080241,

C09080242, C09080415, C09080416, C09080417, C09080418,

C09080419, C09080420, C09080488, C09080489, C09080490,

C09080491, C09080492, C09080493, C09080494, C09080495,

C09080496, C09080497, C09080497, C09080498, C09080499

C09090108, C09090109, C09090110, C09090111, C09090112,

C09090113, C09090114, C09090115, C09090539, C09090540,

C09090541, C09090542, C09090611, C09090612, C09090613,

C09090614, C09090615, C09090616, C09090617, C09090618,

C09090619, C09090620, C09090621, C09090622, C09090680,

C09090681, C09090682, C09090683, C09090684, C09090685,

C09090686, C09090687, C09090854, C09090855, C09090856,

C09090857, C09090858, C09090859

C09100214, C09100215, C09100216, C09100217, C09100218,

C09100219, C09100720

C09110049, C09110050, C09110051, C09110052, C09110053,

C09110141, C09110142, C09110143, C09110144, C09110145,

C09110146, C09110147, C09110148, C09110149, C09110150,

C09110151, C09110152, C09110153, C09110154, C09110251

C10020281, C10020282, C10020283, C10020284, C10020285,

C10020286, C10020287, C10020288, C10020289, C10020290,

C10020291, C10020292, C10020310, C10030297, C10030300,

C10030643, C10030644, C10030645, C10030646, C10030647,

C10030650, C10040013, C10040014, C10040015, C10040016,

C10040017, C10040018, C10040019, C10040020, C10040422,

C10040423

Spares: Examine all spare parts. If a part with a serial

number listed above is found, it is necessary to

incorporate Avox Systems service bulletin

10009507−35−01.

or the following regulators:

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 4 of 16

Jul 05/2011
Table 2: Regulators

Part number: 806370−06

Serial number(s):

C08090678, C08090679, C08090680, C08090681, C08090682,

C08090683, C08090684, C08090685, C08090696, C08090697,

C08090698, C08090699, C08090700, C08090701, C08090702,

C08090703, C08090704, C08090705, C08090706

C08100555, C08100556, C08100557, C08100558, C08100559,

C08100560, C08100561, C08100563, C08100564, C08100565

C08110607, C08110608, C08110609, C08110610, C08110611,

C08110612, C08110613, C08110614, C08110615, C08110616,

C08110617, C08110618, C08110619, C08110620, C08110621,

C08110622, C08110623, C08110624, C08110625, C08110626,

C08110672, C08110673, C08110674, C08110675, C08110676,

C08110677, C08110678, C08110679, C08110680, C08110681,

C08110682, C08110683, C08110684, C08110685, C08110686,

C08110687, C08110688, C08110689, C08110690, C08110691

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 5 of 16

Jul 05/2011
Table 2: Regulators

C09010016, C09010017, C09010018, C09010019, C09010020,

C09010021, C09010101, C09010102, C09010103, C09010104,

C09010105, C09010106, C09010107, C09010108, C09010109,

C09010110, C09010111 C09010112, C09010254, C09010255,

C09010256, C09010257, C09010258, C09010259, C09010260,

C09010261, C09010262, C09010263, C09010264, C09010324,

C09010325, C09010326, C09010327, C09010328, C09010329,

C09010330, C09010331, C09010332, C09010333, C09010334,

C09010335, C09010336, C09010337, C09010338, C09010339,

C09010340, C09010341, C09010342, C09010343, C09010344,

C09010345, C09010346, C09010347, C09010348, C09010648,

C09010649, C09010650, C09010651, C09010652, C09010653,

C09010654, C09010655, C09010656, C09010657, C09010658,

C09010659, C09010660, C09010661, C09010662, C09010663,

C09010664, C09010665, C09010666, C09010667, C09010668,

C09010669, C09010670, C09010671, C09010672, C09010673,

C09010674, C09010675, C09010676, C09010677, C09010678,

C09010679

C09020274, C09020275, C09020276, C09020277, C09020278,

C09020279, C09020280, C09020281, C09020282, C09020283,

C09020284, C09020285, C09020286, C09020287, C09020288,

C09020289, C09020290, C09020291, C09020292, C09020293,

C09020294, C09020295, C09020296, C09020297, C09020298,

C09020299, C09020300, C09020301, C09020302, C09020303,

C09020304

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 6 of 16

Jul 05/2011
Table 2: Regulators

C09030066, C09030067, C09030068, C09030069, C09030070,

C09030071, C09030072, C09030073, C09030074, C09030075,

C09030076, C09030077, C09030078, C09030079, C09030080,

C09030081, C09030082, C09030083, C09030084, C09030085,

C09030086, C09030087, C09030088, C09030089, C09030090,

C09030091, C09030092, C09030093, C09030094, C09030095,

C09030096, C09030097, C09030098, C09030099, C09030100,

C09030101, C09030102, C09030103, C09030104, C09030105,

C09030106, C09030482, C09030483, C09030484, C09030485,

C09030486, C09030487, C09030488, C09030489, C09030490,

C09030491, C09030492, C09030493, C09030494, C09030495,

C09030496, C09030497

C09040178, C09040179, C09040180, C09040181, C09040182,

C09040183, C09040184, C09040185, C09040186, C09040187,

C09040198, C09040199, C09040200, C09040201, C09040202,

C09040203, C09040204, C09040205, C09040206, C09040207,

C09040667, C09040668, C09040669, C09040670, C09040671,

C09040672, C09040673, C09040674, C09040675, C09040676,

C09040678, C09040679, C09040680, C09040681, C09040682,

C09040683, C09040684, C09040685, C09040686, C09040687

C09050137, C09050138, C09050139, C09050140, C09050141,

C09050142, C09050143, C09050144, C09050145, C09050146,

C09050147, C09050148, C09050149, C09050211, C09050212

C09060286, C09060287, C09060288, C09060289, C09060290,

C09060291, C09060292, C09060293, C09060294, C09060295,

C09060296, C09060372, C09060373, C09060374, C09060375,

C09060376, C09060377, C09060378, C09060379, C09060380,

C09060381, C09060382, C09060383, C09060384, C09060385,

C09060386, C09060387, C09060388, C09060389, C09060390,

C09060391, C09060392, C09060393, C09060394, C09060395,

C09060396, C09060397

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 7 of 16

Jul 05/2011
Table 2: Regulators

C09080144, C09080145, C09080146, C09080147, C09080148,

C09080149, C09080150, C09080151, C09080152, C09080153

C09090139, C09090140, C09090141, C09090142, C09090143,

C09090144, C09090145, C09090146, C09090147, C09090148,

C09090149, C09090150, C09090151, C09090152, C09090153,

C09090154, C09090155, C09090156, C09090157, C09090158,

C09090159, C09090160, C09090161, C09090162, C09090163,

C09090164, C09090165, C09090166, C09090167, C09090168,

C09090169, C09090390, C09090391, C09090392, C09090393,

C09090394, C09090395, C09090396, C09090397, C09090398,

C09090399, C09090400, C09090401, C09090402, C09090403

C09100225, C09100226, C09100227, C09100228, C09100229,

C09100230, C09100231, C09100232, C09100233, C09100234,

C09100235, C09100236, C09100237, C09100238, C09100239,

C09100240, C09100241, C09100242, C09100243, C09100244,

C09100245, C09100246, C09100247, C09100248, C09100249,

C09100250, C09100251, C09100252, C09100253, C09100254

C09120215, C09120216, C09120217, C09120218, C09120219,

C09120220, C09120221, C09120222, C09120227, C09120232,

C09120233, C09120234, C09120337, C09120338, C09120339

C10010340, C10010341, C10010342, C10010343, C10010344,

C10010345, C10010346, C10020425, C10020426, C10020427,

C10020428, C10020429, C10020430, C10030425, C10030426,

C10030427, C10030428, C10030429, C10030430, C10030431,

C10030432, C10030433, C10030434, C10030435, C10030436,

C10030437, C10030536, C10030537, C10030538, C10030539,

C10030540, C10030541, C10030542, C10030543, C10030544,

C10030545, C10030546

Spares: Examine all spare parts. If a part with a serial

number listed above is found, it is necessary to

incorporate Avox Systems service bulletin

10009507−35−01.

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 this bulletin can be completed.

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 8 of 16

Jul 05/2011
B. Reason

(1) Condition

It is possible for oxygen regulators to have deformation in the area of the

threads used to secure the regulator to the cylinder. This can cause leakage

that can lead to a loss of oxygen from the cylinder.

(2) Evidence

Deformed regulator bodies were found while doing a inspections during a

routine hydrostatic test at a Maintenance Repair Organization (MRO).

(3) Objective/Benefit

This service bulletin gives the procedure to do the Avox Systems service

bulletin. This will remove the suspected oxygen cylinders and regulators

from service.

C. Description

The access−panel of the entrance compartment is removed. If necessary, the

crew oxygen cylinder is removed. The Avox Systems service bulletin is done. If

removed, a serviceable oxygen cylinder is installed and a leak test of the oxygen

cylinder is done. The access−panel of the entrance compartment is installed.

D. Compliance

Recommended Service Bulletin.

Bombardier recommends that this service bulletin be done no more than 1800

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

31/2012, whichever comes first, unless otherwise directed by the airworthiness

authority of the operator.

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

Tolerance Inspections (DTIs).

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 labour done by an

experienced crew on an aircraft prepared for maintenance.

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 9 of 16

Jul 05/2011
These estimates do not include the time necessary for:

− Administrative functions such as planning, liaising, familiarization, and

report writing.

− Nonproductive 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 labour 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.

It will take an estimated 1.5 man−hours to complete this service bulletin. The

man−hours are divided as shown in the table that follows:

TASK MAN−HOURS

(1) Job Set−Up 0.25

(2) Procedure 0.5

(3) Test 0.5

(4) Job Close−Out 0.25

NOTE: This estimate does not include the man−hours necessary to do Avox

Systems Service Bulletin 10009507−35−01.

G. Material − Price and Availability

(1) Refer to Avox Systems service bulletin 10009507−35−01.

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

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 10 of 16

Jul 05/2011
H. Tooling − Price and Availability

There are no special tools and equipment for this service bulletin.

I. Weight and Balance

Not changed.

J. Electrical Load Data

Not changed.

K. References

− Restriction and/or Special Instruction (RSI), C−35−1423−00.

− Avox Systems Service Bulletin 10009507−35−01, revision 0, dated

August 31/2010.

− Aircraft Maintenance Manual (AMM).

− For Bombardier reference only: PCA 74737.

L. Other Publications Affected

None.

M. Relationship Chart

Not applicable.

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 11 of 16

Jul 05/2011
2. ACCOMPLISHMENT INSTRUCTIONS

A. Job Set−Up

(1) Reference Information

REFERENCE DESIGNATION

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

Maintenance

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

Precautions

AMM 25−24−14−000−801 Removal of the Entrance Storage

Compartment Access Panel

AMM 25−24−14−400−801 Installation of the Entrance Storage

Compartment Access Panel

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

AMM 35−10−00−790−801 Leakage Test of 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

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

(AMM 12−00−00−867−801).

WARNING: OBEY ALL THE SAFETY PRECAUTIONS WHEN YOU DO

MAINTENANCE ON OR NEAR ELECTRICAL/ELECTRONIC

EQUIPMENT. YOU CAN CAUSE INJURY TO PERSONS AND/OR

DAMAGE TO EQUIPMENT.

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

24−00−00−910−801).

(4) Remove electrical power from the aircraft (AMM 24−00−00−861−802).

WARNING: OBEY ALL THE OXYGEN SAFETY PRECAUTIONS WHEN YOU

DO WORK ON THE OXYGEN SYSTEM AND OXYGEN SYSTEM

COMPONENTS. IF YOU DO NOT OBEY THE SAFETY

PRECAUTIONS, YOU CAN CAUSE A FIRE OR AN EXPLOSION.

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 12 of 16

Jul 05/2011
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.

(5) Obey all the oxygen safety precautions (AMM 35−00−00−910−801).

(6) Remove the access panel that follows:

PANEL NAME REFERENCE

231AZ Entrance−Storage−Compartment

Access Panel

AMM 25−24−14−000−801

B. Procedure

Refer to Figure 1.

(1) If necessary, remove the oxygen cylinder (1) (AMM 35−11−03−000−801).

NOTE: It may be necessary to remove the oxygen cylinder assembly to get

access to the part number/serial number.

(2) Do the steps that follow from the Avox Systems service bulletin

10009507–35–01.

(a) Do steps 3.A. and 3.B. of the Avox Systems service bulletin

10009507–35–01.

(b) Do step 3.C.of the Avox Systems service bulletin 10009507–35–01.

(c) Do step 3.D. of the Avox Systems service bulletin 10009507–35–01.

(d) Do steps 3.E. through 3.H. of the Avox Systems service bulletin

10009507–35–01.

(3) If removed, install a serviceable oxygen cylinder (1) (AMM

35−11−03−400−801)

NOTE: Only install an oxygen cylinder assembly that is not listed in table 1

and/or table 2 or that was re−identified by Avox Systems service bulletin

10009507–35–01.

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 13 of 16

Jul 05/2011
ba7012a01.cgm

A

LEGEND

1. Oxygen cylinder.

1

A

SERVICE BULLETIN 670BA−35−011

Oxygen Cylinder Location

Figure 1

S.B. 670BA−35−011

Page 14 of 16

Jul 05/2011
C. Job Close−Out

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

(2) If the oxygen cylinder (1) was removed, do a leak test of the crew oxygen

system (AMM 35−10−00−790−801).

(3) Install the access panel that follows:

PANEL NAME REFERENCE

231AZ Entrance−Storage−Compartment

Access Panel

AMM 25−24−14−400−801

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

logbooks: "Service Bulletin 670BA−35−011, Oxygen − Crew Oxygen System

– Removal from Service of some Crew Oxygen Cylinders and Regulator

Assemblies, incorporated."

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 15 of 16

Jul 05/2011
3. MATERIAL INFORMATION

A. Kit Information

None.

B. Consumable Information

For a list of consumables, refer to the different tasks and the Avox Systems service

bulletin given as references in this service bulletin.

C. Special Tools and Equipment

There are no special tools and equipment for this service bulletin.

D. Disposition of Parts

Not applicable.

SERVICE BULLETIN 670BA−35−011

S.B. 670BA−35−011

Page 16 of 16

Jul 05/2011
THANK YOU FOR ANSWERING THIS EVALUATION FORM 

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

450-476-7300 

SERVICE BULLETIN EVALUATION FORM/COMPLIANCE SHEET 

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• Instructions to do the Service Bulletin 

were accurate. 

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kit drawing(s) were helpful to carry out 

instructions. 

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contents received agree with the 

contents listed in the bulletin? 

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

OPERATOR: NAME (Please print) 

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