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 05/2011Table 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 05/2011Table 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 05/2011Table 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 05/2011Table 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 05/2011Table 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 05/2011Table 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 05/2011B. 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 05/2011These 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 05/2011H. 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 05/20112. 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 05/2011WARNING : 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 05/2011ba7012a01.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 05/2011C. 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 05/20113. 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 05/2011THANK YOU FOR ANSWERING THIS EVALUATION FORM UPON COMPLETION OF THIS EVALUATION FORM/COMPLIANCE SHEET, FAX TO 450-476-7300 

### SERVICE BULLETIN EVALUATI ON 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