# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 1 of 24 EMERGENCY HYDRAULIC POWER - RAM AIR TURBINE MODULE -CHECK/REPLACE PUMP
© 2012 Hamilton Sundstrand Corporation
PROPRIETARY
THIS DOCUMENT AND THE INFORMATIO N CONTAINED HEREIN ARE THE PROPERTY OF HAMILTON SUNDSTRAND CORPORATION (HSC). RECIPIENT AGREES TO HOLD ALL SU CH INFORMATION IN CONFIDENCE AND AGREES IT SHALL BE USED ONLY FOR RECIPIENT'S INTERNAL PURPOSES TO MAIN TAIN RECIPIENT'S EQUIPMENT OR AS MAY OTHERWISE BE PERMITTED IN AN APPLICABLE AGREEMENT BETWEEN RECI PIENT AND HSC. THIS DOCUM ENT AND THE INFORMATION CONTAINED HEREIN SHALL NOT BE USED FOR ANY OTHE R PURPOSE, INCLUDING THE CREATION, MANUFACTURE, DEVELOPMENT, OR DERIVATION OF ANY REPAIRS, MODIFICATI ONS, SPARE PARTS, DESIGN, OR CONFIGURATION CHANGES, OR TO OBTAIN FAA OR ANY OTHER GOVERNMENT OR REGU LATORY APPROVAL FOR SAME. RECIPIENT AGREES NOT TO DISCLOSE SUCH INFORMATION TO ANY THIRD PARTY, EXCEPT AS MAY OTHERWISE BE PROVIDED FOR IN AN APPLICABLE AGREEMENT BETWEEN RECIPIENT AND HS C. COPYING OR DISCLOSURE OF TH IS DOCUMENT AND THE INFORMATION CONTAINED HEREIN BY ANYONE WITHOUT HSC'S PRIOR WRITTE N PERMISSION IS NOT AUTHORIZED AND MAY RESULT IN CRIMINAL AND/OR CIVIL LIABILITY.
INFORMATION SUBJECT TO EXPORT CONTROL LAWS THE TECHNICAL DATA IN THIS DOCUMENT (OR FILE) IS CONTROLLED FOR EXPORT UNDER THE EXPORT ADMINISTRATION REGULATIONS (EAR), 15 CFR PARTS 730-774. VIOLATIONS OF THESE LAWS MAY BE SUBJECT TO FINES AND PENALTIES UNDER THE EXPORT ADMINISTRATION ACT.
EAR EXPORT CLASSIFICATION: ECCN 9E991
THE DATA IN THIS DOCUMENT WERE DEVELOPED ONLY TO MAINTAIN SYSTEMS AND/OR PARTS MANUFACTURED BY OR FOR HAMILTON SUNDSTRAND OR APPROVED BY HAMILTON SUNDST RAND. THE DATA MAY NOT BE APPLICABLE TO ANY OTHER SYSTEMS AND/OR PARTS, REGARDLESS OF THEIR APPARENT SI MILARITY TO SYSTEMS AND/OR PARTS MANUFACTURED BY OR FOR HAMILTON SUNDSTRAND OR APPROVED BY HAMILTON SUNDSTRAND. DO NOT RE LY IN ANY WAY ON DATA IN THIS DOCUMENT TO MAINTAIN OR OTHERWISE SUPPORT SYSTEMS AND/OR PARTS THAT WERE NOT MANUFACTURED BY OR FOR HAMILTON SUNDSTRAND OR APPROVED BY HAMILTON SUNDSTRAND WITHOUT EVI DENCE THAT THE FEDERAL AVIATION ADMINISTRATION OR OTHER REGULATORY AGENCY HAS DETERM INED THAT THE DATA IN TH IS DOCUMENT IS VALID FOR SUCH USE.
HAMILTON SUNDSTRAND ASSUMES NO LIABILITY WHATSO EVER, WHETHER CONTRACTUAL, WARRANTY, TORT OR OTHERWISE, FOR UNAUTHORIZED ALTERA TION OR ALTERATIONS NOT PERFORMED IN ACCORDANCE WITH HAMILTON SUNDSTRAND APPROVED PROCEDURES. 1. PLANNING INFORMATION A. Effectivity (1) The Hamilton Sundstrand Ram Air Turbine (R AT) Modules, Model ERPS06M, all serial numbers, used on Airbus A330 and A 340 aircraft, that are listed below:

Part Number 766351 770952B 768084 1702934 770379 1702934A 770952 1702934B 770952AOriginal Issue Date: Aug 6/12 ERPS06M-29-19 Page 2 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. B. Concurrent Requirements (1) If applicable, the Hamilton Sundstrand service bulletins that follow must be done on the RAT module prior to, or in conjunction with, this bulletin: - ERPS06G-29-6 (Replace Balance Weight/Washer Screws) - ERPS06M-29-13 (Actuator Coil Spring) - ERPS06M-29-18 (Modify Actuator). (2) Hamilton Sundstrand Service Bulletin 5909522-29-1 (Anti-Stall Valve Check) must be done prior to, or in conjunction with, this bulletin. NOTE: For a suspect hydraulic pump, the Ha milton Sundstrand Service Bulletin 5909522-29-1 will be done by Parker Hannifin GmbH (during incorporation of Parker Hannifin GmbH Service Bulletin 42079-29-425).
C. Reason (1) For RAT modules that cont ain a suspect hydraulic pump , analysis has determined that the potential exists for insufficient engagement margin of the hydraulic pump inlet impeller hex drive shaft (internal). This coul d possibly cause disengagement of the inlet impeller and result in failure of the RAT hydraulic pump to provide full hydraulic pressure. Replacement of the suspect hy draulic pump (with a pump having an inlet impeller with a deeper hex drive socket together with a matched-length hex drive shaft) will ensure adequate engagement of the hex drive shaft and eliminate the possibility of disengagement of the inlet impeller. Incorporat ion of this bulletin will provide improved reliability of the RAT module. (2) For RAT modules that do not contain a su spect hydraulic pump, incorporation of this bulletin (to reidentify the hydraulic pump) w ill let the RAT module advance to a new part number. (3) This service bulletin introduces the following new Hamilton Sundstrand part number RAT modules. These RAT modules are equi pped with the Parker hydraulic pump PN 5916485 (which has been reidentified) or the Parker hydraulic pump PN 5916430 (which has been modified).

766351A 768084A 770379A 770952C 770952D 770952E 1702934C 1702934D

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 3 Use or disclosure of this data is subject to restrictions on the front page of this document. D. Description (1) If the hydraulic pump is suspect, this bul letin gives the instructions to replace the hydraulic pump, identify the RAT module, and test the RAT module. (2) If the hydraulic pump is not suspect, this bulletin gives the instructions to identify the hydraulic pump and the RAT module. E. Compliance (1) Incorporation of this service bulletin is to be accomplished at the earliest opportunity. F. Approval (1) The technical content of this document is approved under the authority of DOA No. EASA.21J.031. G. Manpower (1) If the hydraulic pump is su spect, approximately 14.0 man-hours are required to replace the hydraulic pump, identify the RAT module, and test the RAT module. (2) If the hydraulic pump is not suspect, approximately 1.0 man-hour is required to identify the hydraulic pump and the RAT module. H. Weight and Balance (1) None
I. Electrical Load Data (1) Not changed J. Software Accomplishment Summary (1) Not ApplicableOriginal Issue Date: Aug 6/12 ERPS06M-29-19 Page 4 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. K. References (1) Hamilton Sundstrand Component Maintenance Manual (CMM) 29-21-31 (2) Hamilton Sundstrand Standard Practices Manual (SPM) 20-00-00 (3) Applicable Airbus Aircraft Maintenance Manual (AMM) (4) Hamilton Sundstrand Engineering Changes 12A314, 12B559, and 12B977 (5) Parker Hannifin GmbH Service Bulletin 42079-29-425 (6) Equipment Definition Evolution Sheet (EDES) A334RAT05-004 (7) This service bulletin is subject of Aircraft Modification Number 202537 D50553 (classified minor) and is covered by Aircraft Service Bulletin Numbers A330-29-3122 and A340-29-4093. (8) Under no circumstances shall the modified equipment, resulting from the application of this service bulletin, be installed on the aircraft type unless the corresponding modification and, if applicable, its aircraft service bulletin are approved.
L. Other Publications Affected (1) Hamilton Sundstrand CMM 29-21-31 and Parker Hannifin GmbH CMM 29-21-34 will be revised to incorporate this bulletin. M. Interchangeability or Intermixability of Parts (1) Refer to the Aircraft Service Bulletin Numbers A330-29-3122 and A340-29-4093 for interchangeability or intermixability of parts.

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 5 Use or disclosure of this data is subject to restrictions on the front page of this document. 2. MATERIAL INFORMATION A. Material - Price and Availability (1) In order to agree on a well-organized upgrade process, operators should contact the Parker Hannifin GmbH Customer Support Or ganization in Germany before removing a suspect hydraulic pump. (2) The contact information and shipment addr ess for Parker Hannifin GMBH is as follows (also refer to Parker Hannifin GMBH Service Bulletin 42079-29-425):

NOTE: Any e-mail messages should be sent to both contact persons listed below.

Contact 1: Claudia Schorsch, Team Leader Customer Service Administration E-mail: cschorsch@parker.com Telephone: +49 6134 204 217 Fax: +49 6134 204 188

Contact 2: Wolfgang Schlesag, Business Development Manager E-mail: wschlesag@parker.com Telephone: +49 6134 204 227 Fax: +49 6134 204 188 Shipment Address: Parker Hannifin GmbH Service Center Wiesbaden Lorenz-Schott-Strasse 9 D-55252 Mainz-Kastel Germany (3) If the hydraulic pump is not suspect, the hydraulic pump identification plate (refer to Table 1 and Table 3 of this bulletin) will be provided by Parker Hannifin GmbH. Operators should place a “no-c harge” purchase order to Parker Hannifing GmbH, that includes sufficient quantities of identifica tion plates for their entire fleet (with the understanding that not all identification plates may be required). (4) If the hydraulic pump is suspect, a limit ed number of hydraulic pum ps will be placed in a rotable pool for operator use. These wi ll be available to operators for exchange, based upon availability. In addition, th e A330/A340 RAT pump replacement parts kit 914-157 (refer to Table 2 and Table 4 of this bulletin) will be provided with the rotable unit. Requests for rotable units should be sent (along with fleet data) in an e-mail message to Hamilton Sundstrand Retrofit Management as follows: To: Matt Wheeler ( matt.wheeler@hs.utc.com ) Subject: SB ERPS06M-29-19 Rotable Pool RequestOriginal Issue Date: Aug 6/12 ERPS06M-29-19 Page 6 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. (5) Hamilton Sundstrand will suppl y the replacement parts required for accomplishment of this bulletin on a no-charge basis until October 27, 2014 . The replacement parts are currently available in limited quantities. Operators approved by Hamilton Sundstrand to perform the modification of units at thei r facility should place a single “no-charge” order to Hamilton Sundstrand. Operators can forward these orders to their assigned Hamilton Sundstrand Commercial Spares Admi nistrator (or fax to +1-815-226-2624, if the responsible Administrator is not known). In addition, operators can also use the Hamilton Sundstrand website at www.hamiltonsundstrand.com to contact the Commercial Spares group. Upon entering t he website, select “Customer Service” followed by “Commercial Spares” for other contact and order processing options that are available. (a) The two methods for establishing order q uantities based on available fleet records are listed below. In each case, Ham ilton Sundstrand will acknowledge the operator order with an established delivery rate.

1 For operators who can establish a listi ng of affected units in their fleet through the review of records, Hamilton Sundstrand requests that a single purchase order be submitted for the to tal parts requirement. To minimize processing delays, orders must clearly reference the service bulletin number, serial numbers of affected units, total quantity of parts, and anticipated incorporation schedule. [To ca lculate the total quantity of parts to order, refer to Table 1 , Table 2 , Table 3 , or Table 4 of this bulletin for the parts breakdown on a per unit basis.] If, at some point in the future, an operator finds that additional quantities of parts are required, they should contac t Hamilton Sundstrand with the details so that arrangements can be made to provide them with the additional quantities.
2 For operators who cannot establish the total fleet requirements through the review of records, Hamilton Sundstrand requests that an initial purchase order be submitted to support 25 perc ent of their operating fleet or two aircraft, whichever is greater. This w ill allow an operator to have parts available on shelf in the event that an affected unit is found while performing inspections in accordance with this se rvice bulletin. To minimize processing delays, orders must clearly reference the service bulletin number and quantity of parts. [To calculate the total quantity of parts to order, refer to Table 1 , Table 2 , Table 3 , or Table 4 of this bulletin for the parts breakdown on a per unit basis.] If the initial quantity of parts provided is used and aircraft remain to be inspected, operators should contact Hami lton Sundstrand with the details so that arrangements can be made to provide additional parts.

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 7 Use or disclosure of this data is subject to restrictions on the front page of this document. B. Industry Support Information (1) If the hydraulic pump is suspect: (a) Hamilton Sundstrand will give a maximum labor allowance of 14.0 man-hours multiplied by the operator's current approved hourly rate for replacement of the pump on the aircraft and for on-wing test ing. The labor allowance will expire October 27, 2014

. (2) If the hydraulic pump is not suspect: (a) Hamilton Sundstrand will also give a maximum labor allowance of 1.0 man-hour multiplied by the operator's current approved hourly rate for accomplishment of this bulletin. The labor allowance will expire October 27, 2014

. (3) Operators should forward a claim for labor reimbursement to their assigned Hamilton Sundstrand Rockford Warranty Administrator. If the responsible Administrator is not known, the claim should be mailed to Warranty Administration, 4747 Harrison Ave., Rockford, IL 61125, USA, MS 106-6. The claim should reference the bulletin number, serial numbers modified, date modified , total hours, and approved labor rate. (4) Hamilton Sundstrand will incorporate this modification into returned RAT modules at no charge until October 27, 2014 . Operators should contact the Rockford Plant 6 Repair Station for scheduling information. For the Rockford Plant 6 Repair Station contact information, operators should use the Hamilton Sundstrand website at www.hamiltonsundstrand.com . (Upon entering the website, select “Customer Service” followed by “Worldwide Repair Services”. Then, select the link for the Rockford Plant 6 Repair Station.) C. Material Necessary For Each Unit (1) Refer to Hamilton Sundstrand CMM 29-21-31 for expendable parts information. (2) Material to be PurchasedOriginal Issue Date: Aug 6/12 ERPS06M-29-19 Page 8 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. Table 1

Table 1 Note 1: Parker Hannifin GmbH will prov ide the noted part at no charge (refer to paragraph 2. A. of this bulletin for details). Table 1 Note 2: The noted material is commercially available. Table 1 New Parts Required (On the Aircraft, Non-Suspect Hydraulic Pump)

New Part Number Keyword Old Part Number Qty Unit Price Special Instructions/ Disposition 48438 (Parker PN) Identification Plate None 1 (Note 1) If the hydraulic pump is not suspect, install new MS20995C32 Safety Wire None AR (Note 2) If the hydraulic pump is not suspect, use to install the hydraulic pump identification plate

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 9 Use or disclosure of this data is subject to restrictions on the front page of this document. Table 2

Table 2 Note 1: The noted parts are contai ned in the noted A330/A340 RAT pump replacement parts kit 914-157. The parts kit will be provided with the rotable unit (refer to paragraph 2. A. of this bulletin for details). Table 2 New Parts Required (On the Aircraft, Suspect Hydraulic Pump)

New Part Number Keyword Old Part Number Qty Unit Price Special Instructions/ Disposition
5916430 Hydraulic Pump 5909522 1 (Note 1) If suspect, remove old, install new Same O-Ring NAS1612-20 2 (Note 1) If installed, remove old, install new Same Backup Ring MS28774-023 4 (Note 1) Remove old, install new Same O-Ring NAS1611-023 2 (Note 1) Remove old, install new Same Backup Ring MS28774-021 4 (Note 1) Remove old, install new Same O-Ring NAS1611-021 2 (Note 1) Remove old, install new Same Backup Ring MS28774-014 4 (Note 1) Remove old, install new Same O-Ring NAS1611-014 2 (Note 1) Remove old, install new Same O-Ring NAS1611-042 1 (Note 1) Remove old, install new
5912160 Radial Seal 5912160 5910299 1 (Note 1) Remove old, install new
914-157 A330/A340 RAT Pump Replacement Parts Kit None 1 (Note 1) Install newOriginal Issue Date: Aug 6/12 ERPS06M-29-19 Page 10 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. Table 3 Table 3 New Parts Required (In the Shop , Non-Suspect Hydraulic Pump)

New Part Number Keyword Old Part Number Qty Unit Price Special Instructions/ Disposition 48438 (Parker PN) Identification Plate None 1 (Note 1) If the hydraulic pump is not suspect, install new MS20995C32 Safety Wire None AR (Note 2) If the hydraulic pump is not suspect, use to install the hydraulic pump identification plate Same (Note 3) Modification Plate 761251 1 (Note 4) Remove old and install new or mark as necessary 1700217-8 (Note 3) Identification Plate 1700217-1 1 (Note 4) Remove old and install new (for RAT module PN 770379) or mark as necessary 1700217-9 (Note 3) Identification Plate 1700217-2 1 (Note 4) Remove old and install new (for RAT module PN 770952) or mark as necessary 1700217-10 (Note 3) Identification Plate 1700217-3 1 (Note 4) Remove old and install new (for RAT module PN 770952A) or mark as necessary

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 11 Use or disclosure of this data is subject to restrictions on the front page of this document. Table 3 Note 1: Parker Hannifin GmbH will prov ide the noted part at no charge (refer to paragraph 2. A. of this bulletin for details). Table 3 Note 2: The noted material is commercially available. Table 3 Note 3: The noted modification plate and identification plates are only required if the RAT module is in the shop. Table 3 Note 4: Hamilton Sundstrand will provide or install the noted parts at no charge (refer to paragraph 2. A. of this bulletin for details). 1700217-11 (Note 3) Identification Plate 1700217-4 1 (Note 4) Remove old and install new (for RAT module PN 770952B) or mark as necessary 1700217-12 (Note 3) Identification Plate 1700217-5 1 (Note 4) Remove old and install new (for RAT module PN 1702934) or mark as necessary 1700217-13 (Note 3) Identification Plate 1700217-6 1 (Note 4) Remove old and install new (for RAT module PN 1702934A and PN 1702934B) or mark as necessary Table 3 New Parts Required (In the Shop, Non-Suspect Hydraulic Pump) (Continued)

New Part Number Keyword Old Part Number Qty Unit Price Special Instructions/ DispositionOriginal Issue Date: Aug 6/12 ERPS06M-29-19 Page 12 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. Table 4 Table 4 New Parts Required (In the Shop, Suspect Hydraulic Pump)

New Part Number Keyword Old Part Number Qty Unit Price Special Instructions/ Disposition
5916430 Hydraulic Pump 5909522 1 (Note 1) If suspect, remove old, install new Same O-Ring NAS1612-20 2 (Note 1) (Note 2) If installed, remove old, install new Same Backup Ring MS28774-023 4 (Note 1) (Note 2) Remove old, install new Same O-Ring NAS1611-023 2 (Note 1) (Note 2) Remove old, install new Same Backup Ring MS28774-021 4 (Note 1) (Note 2) Remove old, install new Same O-Ring NAS1611-021 2 (Note 1) (Note 2) Remove old, install new Same Backup Ring MS28774-014 4 (Note 1) (Note 2) Remove old, install new Same O-Ring NAS1611-014 2 (Note 1) (Note 2) Remove old, install new Same O-Ring NAS1611-042 1 (Note 1) (Note 2) Remove old, install new
5912160 Radial Seal 5912160 5910299 1 (Note 1) (Note 2) Remove old, install new
914-157 A330/A340 RAT Pump Replacement Parts Kit None 1 (Note 2) Install new

Same (Note 3) Modification Plate 761251 1 (Note 1) Remove old and install new or mark as necessary

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 13 Use or disclosure of this data is subject to restrictions on the front page of this document. 1700217-8 (Note 3) Identification Plate 1700217-1 1 (Note 1) Remove old and install new (for RAT module PN 770379) or mark as necessary 1700217-9 (Note 3) Identification Plate 1700217-2 1 (Note 1) Remove old and install new (for RAT module PN 770952) or mark as necessary 1700217-10 (Note 3) Identification Plate 1700217-3 1 (Note 1) Remove old and install new (for RAT module PN 770952A) or mark as necessary 1700217-11 (Note 3) Identification Plate 1700217-4 1 (Note 1) Remove old and install new (for RAT module PN 770952B) or mark as necessary 1700217-12 (Note 3) Identification Plate 1700217-5 1 (Note 1) Remove old and install new (for RAT module PN 1702934) or mark as necessary Table 4 New Parts Required (In the Shop, Suspect Hydraulic Pump) (Continued)

New Part Number Keyword Old Part Number Qty Unit Price Special Instructions/ DispositionOriginal Issue Date: Aug 6/12 ERPS06M-29-19 Page 14 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. Table 4 Note 1: Hamilton Sundstrand will provide or install the noted parts at no charge (refer to paragraph 2. A. of this bulletin for details). Table 4 Note 2: The noted parts are contained in the A330/A340 RAT pump replacement parts kit 914-157. Table 4 Note 3: The noted modification plate and identification plates are only required if the RAT module is in the shop. (3) Material Supplied by the Operator (a) None D. Material Necessary For Each Spare (1) The same as the material necessary for each unit.
E. Reidentified Parts (1) If the hydraulic pump is not suspect, it may be reidentified (refer to Table 5 of this bulletin):

Table 5 1700217-13

(Note 3) Identification Plate 1700217-6 1 (Note 1) Remove old and install new (for RAT module PN 1702934A and PN 1702934B) or mark as necessary

Table 5 Reidentified Parts
Old Part Number Keyword New Part Number
5909522 Hydraulic Pump 5916485 Table 4 New Parts Required (In the Shop, Suspect Hydraulic Pump) (Continued)

New Part Number Keyword Old Part Number Qty Unit Price Special Instructions/ Disposition

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 15 Use or disclosure of this data is subject to restrictions on the front page of this document. (2) Incorporation of this bulletin advances the RAT module part number as shown in Table 6 of this bulletin [refer to paragraph 3. F. (On the Aircraft) or paragraph 3. G. (In the Shop) of this bulletin].

Table 6

Table 6 Note 1: Hamilton Sundstrand Service Bulletin ERPS06M-29-18 (which must be done prior to, or in conjunction with, this bulleti n for RAT module PN 1702934A) advances the RAT module part number from 1702934A to 1702934B. F. Tooling - Price and Availability (1) No tooling other than that required for shop maintenance of the RAT module is required to do this modification. Table 6 Rat Module Part Numbers From To 766351 766351A 768084 768084A 770379 770379A 770952 770952C 770952A 770952D 770952B 770952E 1702934 1702934C 1702934A (Note 1) 1702934B 1702934DOriginal Issue Date: Aug 6/12 ERPS06M-29-19 Page 16 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. 3. ACCOMPLISHMENT INSTRUCTIONS
A. General CAUTION: THE RAT MODULE CONTAINS DESIGN CRITICAL CHARACTERISTICS, PROCESSES, AND PROCEDURES. THE DESIGN CRITICAL CHARACTERISTICS ARE IDENTIFIED WITH THE SYMBOL >>DCC<<. REFER TO THE INTRODUCTION SECTION OF HAMILTON SUNDSTRAND CMM 29-21-31 FOR A COMPLETE EXPLANATION OF DESIGN CRITICAL CHARACTERISTICS. (1) The facility performing the work (user) s hould obtain the material safety data sheets [Occupational Safety and Health Act (O SHA) Form 20 or equivalent] from the manufacturers or suppliers of materials to be used. The user must become completely familiar with the manufacturer/supplier information and adhere to the procedures, recommendations, warnings, and cautions of the manufacturer/supplier for the safe use, handling, storage, and disposal of these materials. The user should also read the long version of the warnings contained in this bulletin. The long version warnings are contained in Hamilton Sundstrand Warnings Re gistry 341-006 available free of charge to all organizations that are on distribution for this bulle tin. The Warnings Registry 341-006 is also available at myhs.hamiltonsundstrand.com

. (2) A unit modified according to this serv ice bulletin might be returned to the shop for maintenance or repair before the new or modified part numbers or procedures in this bulletin are incorporated into the applicable CMM. Until this service bulletin is incorporated into the CMM, operators are allowed to disassemble, clean, check, repair, assemb le, and test the unit according to the applicable CMM, using the new or modified part numbers or procedures in this bulletin.

After this service bulletin is incorporated into the CMM, the CMM procedures will supersede this bulletin. B. Check (1) Make sure the Hamilton Sundstrand se rvice bulletins that follow have been incorporated, if applicable: - ERPS06G-29-6 (Replace Balance Weight/Washer Screws) - ERPS06M-29-13 (Actuator Coil Spring) - ERPS06M-29-18 (Modify Actuator). (2) If the hydraulic pump is not suspect, make sure the Hamilton Sundstrand Service Bulletin 5909522-29-1 (Anti-Stall Valve Check) has been incorporated, if applicable.
NOTE: For a suspect hydraulic pump, Ha milton Sundstrand Service Bulletin 5909522-29-1 will be done by Parker Hannifin GmbH (during incorporation of Parker Hannifin GmbH Service Bulletin 42079-29-425).

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 17 Use or disclosure of this data is subject to restrictions on the front page of this document. (3) Do a check for a suspect hydraulic pump (280, IPL Figure 1, CMM 29-21-31) or (240, IPL Figure 1A) as follows: (a) Review the list of suspect hydraul ic pump serial numbers as shown in Table 7 of this bulletin. (You may also refer to Ap pendix 1 of Parker Hannifin GmbH Service Bulletin 42079-29-425.)

Table 7

(b) If the hydraulic pump serial num ber is suspect, do the following:
1 Replace the hydraulic pump (proceed to paragraph 3. C. of this bulletin).
2 Return the suspect pump to Parker Hannifin GmbH [refer to paragraph 2.A. (2) of this bulletin for the contact information and shipment address]. (c) If the hydraulic pump serial number is not suspect, do the following steps.
1 On the hydraulic pump identification plate, use a permanent marking method to completely obliterate the existing Hamilton Sundstrand part number (5909522) and the Parker part number (4207902). Table 7 Suspect Hydraulic Pump Serial Numbers BP 193, BP 194, BP 195, BP 196, BP 531, BP 532, BP 533, BP 534, BP 535, BP 537, BP 538, BP 539, BP 540, BR 453, BR 454, BR 455, BR 456, BR 457, BR 458, BR 459, BR 460, BR 461, BR 462, BR 463, BR 464, BR 465, BR 466, BR 467, BR 468, BR 469, BR 470, BR 471, BR 472, BT 924, BT 925, BT 926, BT 927, BT 929, BT 930, BT 931, BU 648, BU 649, BU 650, BU 651, BU 991, BU 992, BU 993, BU 994, BU 995, BU 996, BU 997, BU 998, BU 999, CA 414, CA 415, CA 416, CA 417, CA 418, CA 419, CA 420, CA 421, CA 422, CA 423, CA 424, CA 425, CA 426, CB 372, CB 373, CB 374, CB 375, CB 918, CB 919, CB 920, CB 921, CC 456, CC 457, CC 458, CC 459, CC 460, CC 461, CC 462, CC 463, CC 464, CC 465, CC 466, CD 322, CD 323, CD 324, CD 325, CD 475, CD 476, CD 477, CD 478, CD 479, CD 480, CD 481, CD 482, CD 483, CD 484, CD 485, CD 486, CD 487, CE 932, CE 933, CE 934, CE 935, CE 936, CE 937, CE 938, CE 939, CE 940, CF 862, CF 863, CF 864, CF 865, CF 866, CF 867, CF 868, CF 869, CG 525, CG 526, CG 527, CG 528, CG 529, CG 530, CG 531, CG 532, CG 883, CG 884, CG 886, CG 887, CG 888, CG 889, CG 890, CH 340, CH 341, CH 342, CH 343, CH 344, CH 345, CH 346, CH 347, CH 348, CH 722, CH 723, CH 724, CH 726, CH 727, CH 728, CH 729, CH 730, CH 731, CH 732, CH 733, CK 305, CK 306, CM 130, CM 131, CM 132, CM 133, CM 134, CM 135, CM 136, CM 137, CM 138, CM 139, CM 140, CM 427, CM 428, CM 429, CM 430, CM 431, CM 432, CM 433, CM 434, CM 435, CM 436, CM 437, CM 438, CM 817, CM 819, CM 820, CM 821, CM 822, CM 823, CM 824, CM 825, CM 826, CM 827, CM 828, CM 829, CM 830, CN 772, CN 773, CN 774, CN 775, CN 778, CN 779, CN 780, CP 786, CP 787, CP 788, CP 789, CP 790, CP 791, CP 994, CP 996, CP 997, CP 998, CP 999, CR 360, CR 361, CR 364, CR 365, CR 838, CR 839, CR 840, CR 841, CR 842, CR 843, CR 844, CR 845, CR 846, CT 273, CT 274, CT 555, CT 556, CT 557, CT 559, CT 560, CT 561, CU 050, CU 051, CU 052, CU 053, CU 055, CU 056, CU 057, CU 353, DA 366, DB 461, DB 462, DB 463, DB 464, DB 465Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 18 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. 2 Use new safety wire (PN MS20995C32) to attach a new identification plate (Parker PN 48438) to the hydraulic pump as follows: NOTE: The hydraulic pump advances to Hamilton Sundstrand part number 5916485 and Parker part number 4207903. CAUTION: THE EXISTING HYDRAULIC PUMP SAFETY WIRE SHOULD NOT BE REMOVED. IT SECURES AN ADJUSTING SCREW. REMOVAL OF THIS EXISTING SAFETY WIRE COULD LET A CRITICAL PUMP SETTING BE CHANGED.

a Do not remove the existing hydraulic pump safety wire. WARNING: THE FORCE MADE WHEN LOCKWIRE (ALSO KNOWN AS SAFETY WIRE) IS TWISTED OR CUT CAN CAUSE THE LOCKWIRE TO BECOME A PROJECTILE. THE FORCE CAN CAUSE THE LOCKWIRE TO DAMAGE OR GO THROUGH THE SURFACE OF YOUR EYES. THIS DAMAGE COULD CAUSE PERMANENT BLINDNESS IN THE EFFECTED EYE. BEFORE YOU REMOVE OR INSTALL THE LOCKWIRE, PUT ON SAFETY GLASSES WITH SIDE-SHIELDS OR SAFETY GOGGLES. IF THE LOCKWIRE GETS INTO YOUR EYE, GET IMMEDIATE MEDICAL AID. IF THE LOCKWIRE HAS GONE THROUGH THE SURFACE OF THE EYE, DO NOT TRY TO REMOVE THE LOCKWIRE. M AKE SURE THAT A TRAINED MEDICAL PERSON REMOVES THE LOCKWIRE.
b Use safety wire to attach a new hydraulic pump identification plate (Parker PN 48438) (refer to Figure 1 of this bulletin).

1) Thread approximately 18 to 20 in ches (457 to 508 millimeters) of new safety wire (PN MS20995C32) through the grommets of the new identification plate (Parker PN 48438). 2) Position the new identification plate (Parker PN 48438) adjacent to existing hydraulic pump identification plate. 3) Use a single-wire method to wrap the safety wire around the hydraulic pump housing (adjacent to flange). 4) Put the safety wire pigtail at the bottom of the hydraulic pump for accessibility.
3 Proceed to paragraph 3. F. (Identification - On the Aircraft) or paragraph 3. G. (Identification - In the Shop) of this bulletin.

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 19 Use or disclosure of this data is subject to restrictions on the front page of this document. C. Disassembly (1) Disassemble the RAT module as necessa ry to remove the hydraulic pump (280, IPL Figure 1) or (240, IPL Figure 1A) (refer to CMM 29-21-31, DISASSEMBLY). Discard the parts that follow. - O-ring (110, IPL Figure 1) (if installed) - Backup ring (180, IPL Figure 1) or (160, IPL Figure 1A) - O-ring (190A, IPL Figure 1) or (170, IPL Figure 1A) - Backup ring (210, IPL Figure 1) or (190, IPL Figure 1A) - O-ring (220A, IPL Figure 1) or (200, IPL Figure 1A) - Backup Ring (240, IPL Figure 1) or (220, IPL Figure 1A) - O-ring (250A, IPL Figure 1) or (230, IPL Figure 1A) - Radial seal (323 or -323A, IPL Figure 1) or (340, IPL Figure 1A) - O-ring (324A, IPL Figure 1) or (320, IPL Figure 1A) D. Assembly (1) Use the hydraulic pump PN 5916430 [i n place of (280, IPL Figure 1) or (240, IPL Figure 1A)] and the following new parts to assemble the RAT module (refer to CMM 29-21-31, ASSEMBLY). - O-ring (324A, IPL Figure 1) or (320, IPL Figure 1A) - Radial seal (-323A, IPL Figure 1) or (340, IPL Figure 1A) - O-ring (250A, IPL Figure 1) or (230, IPL Figure 1A) - Backup Ring (240, IPL Figure 1) or (220, IPL Figure 1A) - O-ring (220A, IPL Figure 1) or (200, IPL Figure 1A) - Backup ring (210, IPL Figure 1) or (190, IPL Figure 1A) - O-ring (190A, IPL Figure 1) or (170, IPL Figure 1A) - Backup ring (180, IPL Figure 1) or (160, IPL Figure 1A) - O-ring (110, IPL Figure 1) (if removed)
E. Test (1) If the RAT module is in the shop, do a test of the RAT module (refer to Hamilton Sundstrand CMM 29-21-31, TESTING AND FAULT ISOLATION). (2) If the RAT module is on the aircraft and the hydraulic pump has been replaced, do a functional test of the RAT (refe r to the applicable Airbus AMM). (3) If the RAT module is on the aircraft, and if the RAT hydraulic pump has been reidentified on the aircraft, no test is necessary.Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 20 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. F. Identification (On the Aircraft)
NOTE: If the RAT module identification plate or modification plate is missing, operators should contact Hamilton Sundstrand for a replacement part.
NOTE: If additional information is required to mark the RAT module identification or modification plate, operators should contact the following Hamilton Sundstrand Service Engineer: Greg Kuczek Phone: +1-815-226-6581 Fax: +1-860-660-4995 E-Mail: gregory.kuczek@hs.utc.com (1) If the RAT module is on the aircraft, identify the RAT module as follows: (a) Use a ball point pen (or an equivalent permanent marking method) to change the part number (of the RAT module) on the RAT module identifica tion plate as shown in Table 8 of this bulletin. (Refer to Figure 2 of this bulletin for the location of the identification plate).

Table 8

Table 8 Note 1: Hamilton Sundstrand Service Bulletin ERPS06M-29-18 (which must be done prior to, or in conjunction with, this bulleti n for RAT module PN 1702934A) advances the RAT module part number from 1702934A to 1702934B. Table 8 RAT Module Part Number Change
From Part Number To Part Number
766351 766351A

768084 768084A
770379 770379A
770952 770952C
770952A 770952D
770952B 770952E
1702934 1702934C
1702934A (Note 1)
1702934B 1702934D

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 21 Use or disclosure of this data is subject to restrictions on the front page of this document. (b) Use a ball point pen (or an equivalent permanent marking method) to mark an X through Mod Dot 19 on the RAT module modification plate. (Refer to Figure 2 of this bulletin for the location of the modification plate). NOTE: The next time the modified RAT module is in the shop: 1. For RAT modules with bar-coded identification plates, the existing identification plate should be replaced with a new identification plate (refer to Table 9 of this bulletin and Hamilton Sundstrand CMM 29-21-31, ASSEMBLY). 2. The existing modification plate should be replaced with a new modification plate (PN 761251) (refer to Hamilton Sundstrand CMM 29-21-31, ASSEMBLY). G. Identification (In the Shop) (1) (PN 766351 or 768084) Identify the RAT module as follows (refer to SPM 20-00-00, ASSEMBLY): (a) Mark the letter A after the part number (766351 or 768084) in the P/N block of the identification plate (540, IPL Figure 1, CMM 29-21-31). (b) Replace the modification plate (555) as follows:
1 If not already marked, mark the app licable new RAT module part number (766351A or 768084A) on a new modification plate (555).
2 Transfer any pertinent information from the existing modification plate to the new modification plate (555).
3 Mark an X through Mod Dot 19 on the new modification plate (555).
4 Replace the existing modification plate with the new modification plate (555). (2) (PN 770379, 770952, 770952A, 770952B, 1702934, 1702934A, or 1702934B) Identify the RAT module as follows (refer to SPM 20-00-00, ASSEMBLY): (a) Replace the identification plate as follows: NOTE: Incorporation of this bulletin advances the RAT module part number (refer to Table 9 of this bulletin).
1 Transfer any pertinent information from the existing identification plate to a new identification plate (refer to Table 9 of this bulletin).
2 Replace the existing identification plat e with the new identification plate (refer to Table 9 of this bulletin and CMM 29-21-31, ASSEMBLY).Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 22 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. (b) Replace the modification plate (350, IP L Figure 1A, CMM 29-21-31) as follows:
1 If not already marked, mark the ap plicable new RAT module part number (refer to Table 9 of this bulletin) on a new modification plate (350).
2 Transfer any pertinent information from the existing modification plate to the new modification plate (350).
3 Mark an X through Mod Dot 19 on the new modification plate (350).
4 Replace the existing modification plate with the new modification plate (350).

Table 9

Table 9 Note 1: Hamilton Sundstrand Service Bulletin ERPS06M-29-18 (which must be done prior to, or in conjunction with, this bulleti n for RAT module PN 1702934A) advances the RAT module part number from 1702934A to 1702934B. Table 9 RAT Module Identification
From Part Number To Part Number Existing Identification Plate Part Number New Identification Plate Part Number
770379 770379A 1700217-1 (-540A, IPL Figure 1) 1700217-8
770952 770952C 1700217-2 (-540B) 1700217-9
770952A 770952D 1700217-3 (-540C) 1700217-10
770952B 770952E 1700217-4 (-540D) 1700217-11
1702934 1702934C 1700217-5 (360, IPL Figure 1A) 1700217-12
1702934A (Note 1) 1700217-6 (-360A) 1700217-13
1702934B 1702934D 1700217-6 (-360A) 1700217-13

# SERVICE BULLETIN

Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 23 Use or disclosure of this data is subject to restrictions on the front page of this document. Figure 1

Figure 1 Installation of the New Hydraulic Pump Identification Plate VIEW B IDENTIFICATION PLATE PN 48438 SAFETY WIRE

SAFETY WIRE

SB-ERPS06M2919-108681HS P/N5916485

IDENTIFICATION PLATE BParker P/N4207903HS P/N5916485Original Issue Date: Aug 6/12 ERPS06M-29-19 Page 24 

# SERVICE BULLETIN

Use or disclosure of this data is subject to restrictions on the front page of this document. Figure 2

Figure 2 Location of the RAT Module Modification and Identification Plates SB-ERPS06M2919-108687 RAT MODULE MODIFICATION PLATE

RAT MODULE IDENTIFICATION PLATE