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This text is OCR from a scan. OCR can misread letters and numbers. © CASA. Filed by the FAA in regulations.gov docket FAA-2015-4809; AD 2016-07-18 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
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EADS ' CASA CN-235 - SERVICE BULLETIN
FIRE PROTECTION ENGINE FIRE EXTINGUISHING. MODIFICATION OF THE ENGINE FIRE DETECTION SYSTEM.
1. GENERAL INFORMATION A. EFFECTIVITY
(1) Models CN- 235-200, CN-235-300.
(2) Aircraft The Version/MSN relationship is provided for information only.
This relationship is correct at the time of issue in accordance with the information available in EADS-CASA. Any future changes that are a result of the transfer of an aircraft from one version to another will not be reflected in this list unless the Service Bulletin is revised for another reason.
VERSION MSN KIT No.
AEOI C-135. SB235260006K01 AE02 C-139, C-143, SB235260006K01 C-145.
IB02 C-018, C-030. SB235260006K01 L302 C-130. SB235260006K01 L303 C-172, C-186. SB235260006K01 QCO2 C-042. SB235260006K01 SMOI C-161. C-169, S8235260006K01
(3) Spares None B . CONCURRENT REQUIREMENTS None Date: Jul 08/2014 SB-235-26-0006 Original Pag : 1 of 38
EADS _ CASA CN-235 - SERVICE BULLETIN C. REASON
(1) HISTORY The possibility that a false alarm occurs because of damp in the connectors of the fire detectors has been found.
(2) OBJETIVE / ACTION To modify the location and routing of the fire detection system.
(3) ADVANTAGES To prevent false alarm and damp in the connectors of the fire detectors.
(4) OPERATIONAL/MAINTENANCE CONSEQUENCE None D. DESCRIPTION To accomplish this Service Bulletin it is necessary to:
- Put the aircraft in the safe condition for maintenance tasks.
- Put the access platform in position.
- Get access to the work area.
- Disconnect the fire detection sensors.
- Remove clamps and supports.
- Remove labels.
- Modify firewall.
- Install new clamps and supports.
- Connect the fire detection sensor.
- Set new labels.
- Do tests.
- Install the access panels.
- Record the accomplishment.
COMPLIANCE
(1) Classification Recommended
(2) Accomplishment Timescale None F. APPROVAL The technical content of this document has been approved by the authority of the DOA No. EASA.21J.032.
Date: Jul 08/2014 SB-235-26-0006 Original Pag : 2
EADS ' CASA CN-235 - SERVICE BULLETIN NOTE: This issue is a translation of SB-235-26-0006. In case of any disagreement, reference should be made to the Spanish Original issue, which has been approved by the authority of the DOA No. EASA.21J. 032.
G. MANPOWER The manpower estimates given in this Service Bulletin are based on the direct labour cost to do the work. These estimates assume that the work will be done by experienced personnel, and may need to be revised upwards to suit operators' circumstances. The estimates do not include the time to prepare, plan or inspect the work. Manufacture and procurement of part and tools, curing times (drying times for paints, sealants, adhesives, etc.) and general administration work are also not included.
Kit SB235260006K01 ON AIRCRAFT: 24 TOTAL MANHOURS : 24 ELAPSED TIME(HRS) :
NOTE: The indicated time is an approximated time for the accomplishment of the modification described in Service Bulletin.
H. WEIGHT AND BALANCE
(1) Variationof the Standard Basic Empty Weight (SBEW).
Kit SB235260006K01: Weight = + 0.27 Kg.
(2) Variation of the momentum with respect to the reference plane.
Kit SB235260006K01: Momentum = + 2.64 Kg m.
I. ELECTRICAL LOAD DATA Not changed J. REFERENCES Aircraft Maintenance Manual (AMM): 06-41-54, 20-15-00, 20-21-00, 20-27-00, 20-28-00, 20-38-00, 20-50-00, 26-11-00, 26-11-11, 71-10-12, 71-10-13, 71-11-12 Illustrated Tools and Equipment 20-00-01, 26-11-02 Manual (ITEM):
Date: Jul 08/2014 SB-235-26-0006 Original Pag : 3
EADS ' CASA CN-235 - SERVICE BULLETIN K. PUBLICATIONS AFFECTED Aircraft Maintenance Manual (AMM): 26-11-00, 26-11-11 Illustrated Parts Catalog (IPC): 26-11-00, 71-21-20 L. INTERCHANGEABILITY/MIXABILITY Not applicable M. RELATED FIGURES
- Figure 1 Modification of the firewall.
- Figure 2 Installation of support in the firewall.
- Figure 3 Modification of the fire detection sensor.
- Figure 4 Placement of labels.
Date: Jul 08/2014 SB-235-26-0006 Original Pag : 4
EADS ' CASA CN-235 - SERVICE BULLETIN
2. MATERIAL INFORMATION A. MATERIAL - PRICE AND AVAILABILITY
(1) Material Operators with aircraft shown in the effectivity of this Service Bulletin should send a purchase order to EADS-CASA. Quote the number of the Service Bulletin. The address is:
EADS- CASA
SERVICES - MATERIAL SUPPORT Avda. de Aragón, 404 28022 MADRID SPAIN Fax: +34 91 585 55 05
(2) Price and Availability Sales terms must be agreed between the Operator and EADS-CASA in accordance with the established procedure.
B. INDUSTRY SUPPORT INFORMATION None C. LIST OF COMPONENTS SB235260006K01
FIG ITEM N/P NEW QTY UM KEYWORD ITEM N/P OLD INT INST DISP 1 MS20995C32 2,0 M1 Lockwir 2 35-75402-0301 2 Label 3 35-75402-0601 2 Label 8 NAS1149C0332R 2 Washer 9 MS21043-3 2 Nut 11 NAS1096-3-8 4 Screw 16 35-75428-0101 support 18 37731-301 12 Washer 21 AS21919WCJ28 Clamp 40 LN9178-3208F 20 Rivet 51 MS21913J6 2 plug 52 AS5178J06 2 Nut Date: Jul 08/2014 SB-235-26-0006 Original Pag : 5
EADS ' CASA CN-235 - SERVICE BULLETIN
FIG ITEM N/P NEW QTY UM KEYWORD ITEM N/P OLD INT INST DISP 53 NAS1149C0932R 4 Washer D. LIST OF MATERIALS - OPERATOR SUPPLIED
(1) Consumable Materials
DESCRIPTION REFERENCE TO CML QTY PER A/C INST DISP MAT NO.
Epoxy Adhesive Mat. No. Z-15.237 As required Silicone Adhesion Promoter Mat. No. Z-15.904 As required Fire-Wall Sealant Mat. No. Z-16.206 As required Silicone Sealant Mat. No. Z-16.306 As required Fluorosilicone Sealant Mat. No. Z-16.403 As required Fluorocarbon Sealant Mat. No. Z-16.421 As required Sealant Mat. NO. AIMS-04- As required 05-014B/-015B Tape Mat. No. Z-22.172 As required Solvent Mat. No. Z-23.139 As required Self-Adhering Insulation Tape Mat. No. Z-22.127 As required Lint-Free Cotton Cloths Mat. No. Z-24.930 As required NOTE: To accomplish this Service Bulletin it is also necessary to use the consumable materials listed in the referenced procedures.
(2) Components None E. PARTS TO BE RE-IDENTIFIED BY THE OPERATOR Effectivity: All, except QC02.
ITEM N/P NEW KEYWORD ITEM N/P OLD INT INST DISP
(61) 35-A3825-0101 Front (60) 35-52151-0109 03 Modify firewall Date: Jul 08/2014 SB-235-26-0006 Original Pag : 6
EADS ' CASA _ CN-235 - SERVICE BULLETIN
ITEM N/P NEW KEYWORD ITEM N/P OLD INT INST DISP
(63) 35-A3825-0201 Rear (62) 35-52151-0207 03 Modify firewall NOTE : INT 03 - Not Interchangeable.
Effectivity: QCO2.
ITEM N/P NEW KEYWORD ITEM N/P OLD INT INST DISP
(61) 35-A3728-0101 Front (60) 35-52151-0105 03 Modify firewall
(63) 35-A3729-0101 Rear (62) 35-52151-0205 03 Modify firewall NOTE: INT 03 - Not Interchangeable.
F. TOOLING - PRICE AND AVAILABILITY None G. SPECIAL TOOLS None Date: Jul 08/2014 SB-235-26-0006 Original Pag : 7
EADS CASA CN-235 - SERVICE BULLETIN
INTENTIONALLY LEFT BLANK Date: Jul 08/2014 SB - 235-26-0006 Original Pag : 8
EADS CASA CN-235 - SERVICE BULLETIN
3. ACCOMPLISHMENT INSTRUCTIONS WARNING: Make sure all warning indications are respected in the reference procedures.
WARNING: Mo Isure that you obey all the safety precautions of the amn A. GENERAL
(1) Preparation NOTE: All the dimensions shown herein are in millimeters, unless otherwise specified.
(a) Disconnect all the electrical power supplies and make sure that all the corresponding electrical circuits are isolated.
(b) Prepare the aircraft for the tasks and obey all the safety precautions.
(c) Put warning notices in the correct positions to prevent unwanted operation of any control or system.
(d) Get access to the aircraft and find the area where the Service Bulletin will be applied.
(e) Prepare the consumable material necessary to do the work.
(2) Standard Practices
(a) Standard Torques (AMM 20-21-00).
(b) Sealing (AMM 20-38-00).
(c) Surface Treatment (AMM 20-50-00).
(d) Electrical Items (AMM 20-15-00).
(e) Electrical Wiring and Bundles (AMM 20-27-00).
(f) Electrical Bonding (AMM 20-28-00).
(3) Work Breakdown On aircraft:
- Put the aircraft in the safe condition for maintenance tasks.
- Put the access platform in position.
- Get access to the work area.
- Disconnect the fire detection sensors.
Date: Jul 08/2014 SB-235-26-0006 Original Pag : 9
EADS ' CASA CN-235 - SERVICE BULLETIN Remove clamps and supports.
Remove labels.
- Modify firewall.
Install new clamps and supports.
- Connect the fire detection sensor.
- Set new labels.
- Do tests.
- Install the access panels.
- Record the accomplishment.
B. MODIFICATION NOTE: The item numbers referred to in this paragraph correspond to those given in the kit and to the different illustrations.
NOTE: The procedure for the left powerplant is described. The procedure for the right powerplant is symmetrical.
NOTE: The FIN numbers shown between parenthesis refer to the right powerplant.
(1) Preliminary operations
(a) Put the access platform under the left powerplant.
(b) Remove and keep the access panels:
- 413AR (423AR) .
- 413AL (423AL).
- 413AT (423AT) .
- 414AT (424AT).
Refer to AMM 06-41-54, AMM 71-10-12, AMM 71-11-12 and AMM 71-10-13.
NOTE: Remove the panel 413AB (423AB) only when the removal of the bottom fire sensor set is necessary.
Refer to AMM 71-10-12.
(c) Do the preliminary operations described in AMM 26-11-11.
(2) Removal NOTE: Keep the items that you removed before in storage bags to install them later.
(a) Disconnect the top fire detection sensor (100).
Refer to Figure 3 Sheet 4.
1 At the end of the support (12):
Date: Jul 08/2014 SB-235-26-0006 Original Pag : 10
EADS ' CASA CN-235 - SERVICE BULLETIN Remove and discard the lockwire (1).
- Disconnect the connector (30) from the receptacle (29).
- Remove and discard the washer (18) from the connector
- Put a protective cover/plug on the connector (30) and the receptacle (29).
(b) Disconnect the bottom fire detection sensor (110).
Refer to Figure 3 Sheet 7.
1 Both ends of the support (13):
- Remove and discard the lockwire (1).
- Disconnect the connector (33) from the flanged coupling
- Disconnect the connector (36) from the flanged coupling
(37).
- Remove and discard the 2 washers (18) from the connectors (33) and (36).
- Put a protective cover/plug on the connectors (33) and
(36) and on the flanged couplings (17) and (37).
(c) Disconnect the end wire of the fire detection system (120).
1 At the end of the firewall set (50):
Refer to Figure 3 Sheet 2.
- Remove and discard the lockwire (1).
- Disconnect the connector (34) from the receptacle (4).
- Remove and discard the washer (18) from the connector
(34).
- Put a protective cover/plug on the connector (34) and the receptacle (4).
- Remove and keep the washer (5).
- Remove and keep the coupler (4).
2 At the end of the support (13):
Refer to Figure 3 Sheet 7.
- Remove and discard the lockwire (1).
- Disconnect the connector (27) from the flanged coupling
(17) .
- Remove and discard the washer (18) from the connector
(27) .
- Put a protective cover/plug on the connector (27) and the flanged coupling (17).
(d) Disconnect the end wire of the fire detection system (130).
Date: Jul 08/2014 SB-235-26-0006 Original Pag : 11
EADS ' CASA CN-235 - SERVICE BULLETIN 1 At the end of the support (12):
Refer to Figure 3 Sheet 4.
- Remove the receptacle (29) from the clamp (10).
2 At the end of the support (13):
Refer to Figure 3 Sheet 7.
Remove and discard the lockwire (1).
- Disconnect the connector (28) from the flanged coupling
(37).
- Remove and discard the washer (18) from the connector
(28).
- Put a protective cover/plug on the connector (28) and the flanged coupling (37).
3 Disconnect and keep the end wire of the fire detection system (130).
Refer to Figure 3 Sheet 7.
(e) Remove and keep the support (12), installed on the firewall set (50).
Refer to Figure 3 Sheet 4.
Remove and keep:
- 1 clamp (6).
- 1 washer (8).
- 1 clamp (10).
- 1 screw (11).
- 1 grounding terminal (19).
Remove and discard the 2 rivets (40) that connect to the firewall set (50).
Remove and discard the 6 rivets (40) that connect from the flanged couplings (17) and (37) to the support (13). Remove and keep the flanged couplings (17) and (37). Remove and discard the support (13) of the bottom cowling (22) of the engine. Refer to Figure 3 Sheet 5.
(g) Remove and keep the support (25) of the bottom cowling (22) of the engine. Refer to Figure 3 Sheet 7.
(h) At the 2 clamp sets (21) of the side bar of the engine support.
Date: Jul 08/2014 SB-235-26-0006 Original Pag : 12