## SSI 92-070 Revision A – April 25, 2014
TRANSMITTAL Special Service Instruction 92-070 dated February 19, 2014 has been revised. This page accompanies Revision A, dated April 25, 2014. 92-070A dated April 25, 2014 supersedes the basic issue of 92-070, dated February 19, 2014. Text changes are indicated by a vertical line in the outer margin of the page . Illustration changes are indi cated by a vertical line next to the figure title. 

### INSTRUCTIONS TO OPERATORS: Operators that have complied with 92-070 dated Febr uary 19, 2014, no further action is required. Operators that have not complied with the basic issue da ted February 19, 2014, comply with revision A in its entirety. 

### HIGHLIGHTS OF THIS REVISION: Drawings Required for Modification Added 92070-55094. Effectivity Revised serial numbers to 920006 through 920084. Instructions Added note prior to step A. (1) indicating alternate clamp and hardware sizes can be used to achieve proper fit. Added note prior to step B. (8) indicating No. 1 AC generator feeder must not be in contact with hydraulic lines. Added Figure 1 showing acceptable and unacceptable clearance between No. 1 AC generator feeder and hydraulic lines. Material Information Updated Modification Kit Required and Source Information.Sikorsky Aircraft Corporation 6900 Main Street P.O. Box 9729 Stratford, Connecticut 06497-9129 (203) 386-4000

N OTICE TO A LL P ERSONS R ECEIVING T HIS D OCUMENT : W ARNING : T HIS DOCUMENT , OR AN EMBODIMENT OF IT IN ANY MEDIA , DISCLOSES INFORMATION WHICH IS PROPRIETARY , IS THE PROPERTY OF SIKORSKY AIRCRAFT CORPORATION AND / OR ITS SUBSIDIARIES , IS AN UNPUBLISHED WORK PROTECTED UNDER APPLICABLE COPYRIGHT LAWS , AND IS DELIVERED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED , DISCLOSED , REPRODUCED , IN WHOLE OR IN PART ( INCLUDING REPRODUCTION AS A DERIVATIVE WORK ), OR USED FOR MANUFACTURE FOR ANYONE OTHER THAN SIKORSKY AIRCRAFT CORPORATION AND / OR ITS SUBSIDIARIES WITHOUT ITS WRITTEN CONSENT , AND THAT NO RIGHT IS GRANTED TO DISCLOSE OR SO USE ANY INFORMATION CONTAINED HEREIN . A LL RIGHTS RESERVED . A NY ACT IN VIOLATION OF APPLICABLE LAW MAY RESULT IN CIVIL AND CRIMINAL PENALTIES

. E XPORT W ARNING : T HESE COMMODITIES , TECHNICAL DATA OR SOFTWARE ARE SUBJECT TO THE EXPORT CONTROL OF EITHER THE I NTERNATIONAL T RAFFIC IN A RMS R EGULATIONS (ITAR) OR THE E XPORT A DMINISTRATION R EGULATIONS (EAR) AND CANNOT BE EXPORTED WITHOUT THE PRIOR AUTHORIZATION OF EITHER THE D EPARTMENT OF S TATE OR THE D EPARTMENT OF C OMMERCE . T HE TERM “E XPORT ” INCLUDES ANY DISCLOSURE AND / OR PROVISION OF ACCESS TO COMMODITIES , TECHNICAL DATA OR SOFTWARE TO OR BY FOREIGN NATIONALS ( WHETHER LOCATED IN THE U NITED S TATES OR A BROAD ). T HIS REQUIREMENT ALSO APPLIES TO FOREIGN NATIONAL EMPLOYEES OF U.S. C OMPANIES AND THEIR FOREIGN SUBSIDIARIES

. S-92 ® IS A REGISTERED TRADEMARK OF SIKORSKY AIRCRAFT CORPORATION

. 

# SPECIAL SERVICE INSTRUCTIONS SSI No. 92-070A
Subject : STANDARD PRACTICES – AIRFRAME – Clamping Electrical Wires and Bundles - Upper Deck Wiring Harness Installation, Field Modification Purpose : To remove and reroute Upper Deck Wiring Harnesses to prevent chafe condition. Model : S-92 ® Effectivity : S-92A model helicopters with serial numbers 920006 through 920084. Component : LH and RH upper deck wiring harnesses, mounting hardware, and associated attaching hardware. Description : Helicopter is prepared for maintenance. Access is gained to the LH and RH Upper Deck Wiring Harnesses and electrical harnesses. Clamps are removed from the No. 1 and No. 2 AC Generator/Engine Inlet Anti-ice Feeders and LH and RH electrical main harnesses. The No. 1 and No. 2 AC Generator Feeders are removed. Electrical lines mounting provisions are reworked. The LH and RH top deck harnesses are rerouted. The LH Top Deck Rotor Ice Protection System (RIPS), No. 1 AC Generator Feeder, No. 1 Engine Inlet Feeder, No. 2 AC Generator Feeder, and No. 2 Engine Inlet Feeder are installed. Clamps and hardware are installed on applicable harnesses. Helicopter is returned to service. Drawings Required for Modification : 92070-20059, 92070-55034, 92070-55094, and 92551-00446. References : (a) Maintenance Manual SA S92A-AMM-000, Task, 30-61-00-710-001. (b) Maintenance Manual SA S92A-AMM-000, Task, 53-70-00-900-001. (c) Maintenance Manual SA S92A-AMM-000, Task, 71-62-04-900-001. (d) Maintenance Manual SA S92A-AMM-000, Task, 71-62-04-900-002. (e) Maintenance Manual SA S92A-AMM-000, Task, 20-20-02-910-001.
February 19, 2014 Revision A – April 25, 2014 Page 1 of 8 

# Sikorsky A United Technologies CompanySPECIAL SERVICE INSTRUCTIONS NO. 92-070A
(f) Maintenance Manual SA S92A-AMM-000, Chapter/Section, 25-29-01. (g) Functional Check Flight Procedures Manual, SA S92A-FCP-000. Compliance : Sikorsky Aircraft recommends compliance with this SSI. Approval : The design change affected by this document is classified as Minor, and is FAA approved in accordance with the applicable requirements of United States Federal Aviation Regulations 14 CFR Part 29. FAA approval constitutes EASA and Transport Canada approval under the terms of current bilateral agreement procedures. Instructions: A. Preparation for modification: NOTE

x A complete review of this SSI is recommended before starting the procedure.

x Before beginning this modification procedure, use the material information list to inventory the kit. Make sure all parts are present and in serviceable condition.

x The instructions in this SSI shall be done by personnel experienced in standard working/repair and safety practices.

x Slight variations to the instructions contained herein are allowed, as long as the intent of the modification is accomplished.

x Alternate clamp and hardware sizes can be used to achieve proper fit. WARNING TO PREVENT ELECTRICAL SHOCK OF PERSONNEL, MAKE SURE ELECTRICAL POWER IS DE-ENERGIZED. DO NOT APPLY POWER TO HELICOPTER UNTIL INSTRUCTED TO DO SO. (1) Turn off electrical and hydraulic power and make helicopter safe for ground maintenance. (2) Gain access to LH and RH upper deck wiring harnesses as follows: (a) Open No. 1 and No. 2 engine cowling/work platform. (Refer to Maintenance Manual SA S92A-AMM-000, Task, 53-70-00-900-001). (b) Open main rotor pylon sliding fairing. (Refer to Maintenance Manual SA S92A-AMM-000, Task, 53-70-00-900-001). (c) Remove No. 1 and No. 2 engine center cover assemblies. (Refer to Maintenance Manual SA S92A-AMM-000, Task, 71-62-04-900-001). (d) Remove applicable ceiling panels. (Refer to Maintenance Manual SA S92A-AMM-000, Chapter/Section, 25-29-01). B. Completion of modification: (1) Remove existing clamp setups and hardware securing No. 1 AC generator feeder (92552- 07103-041), and No. 2 AC generator feeder (92552-07104-041). (Dwg 92551-00446). February 19, 2014 Revision A – April 25, 2014 2SPECIAL SERVICE INSTRUCTIONS NO. 92-070A
(2) Remove No. 1 AC generator feeder (92552-07103-041) (Item 30). (Dwg 92551-00446, sheets 8, 12, 13, 14, 16, 16.3, 16.4, 16.5, and 16.6). (3) Remove No. 2 AC generator feeder (92552-07104-041) (Item 31). (Dwg 92551-00446, sheets 30, 30.1, 31, 33, 33.1, 34, 34.1, 34.2, 35.2, and 36). (4) Rework electrical lines mounting provision between stations 221.50 and 399.54, and LH and RH BL 16.50 and 26.62. (Dwg 92070-20059-011, Rev A, sheets 1-3). (5) Reroute LH top deck harness (92552-04101-046) (Item 18). (Dwg 92070-55034, sheets 9, 10, 12, 13, 15 - 20, and 22 - 27). (6) Reroute RH top deck harness (92552-04102-046) (Item 19). (Dwg 92070-55034, sheets 14, 28 - 35, 37 - 46, and 48). NOTE Observe standard practices for clamping electrical wires and bundles. (Refer to Maintenance Manual SA S92A-AMM-000, Task, 20-20-02-910- 001). (7) Install LH top deck RIPS (92552-04118-047) (Item 237). (Dwg 92070-55034, sheets 21 - 27). CAUTION NO. 1 AC GENERATOR FEEDER (92552-07103-042) MUST NOT BE IN CONTACT WITH HYDRAULIC LINES. (8) Install No. 1 AC generator feeder (92552-07103-042) (Item 130). (Dwg 92070-55034, sheets 17 - 19, 52, and 54 - 56). (9) If necessary, heat and reshape No. 1 AC generator feeder boot to prevent contact with hydraulic lines. (Refer to Figure 1). (10) Install No. 1 engine inlet feeder (92552-07105-041) (Item 132). (Dwg 92070-55034, sheets 23 - 27, 49 - 56). (11) Install No. 2 AC generator feeder (92552-07104-042) (Item 131). (Dwg 92070-55034, sheets, 37, 38, 40 - 42, 60, 61, and 64). (12) Install No. 2 engine inlet feeder (92552-07106-041) (Item 133). (Dwg 92070-55034, sheets 45, 46, 48, 57 - 63). (13) Install clamp setups and hardware in accordance with Dwg 92070-55034. (14) Install ceiling panels. (Refer to Maintenance Manual SA S92A-AMM-000, Chapter/Section, 25-29-01). (15) Install No. 1 and No. 2 engine center cover assemblies. (Refer to Maintenance Manual SA S92A-AMM-000, Task, 71-62-04-900-002). (16) Close main rotor pylon sliding fairing. (Refer to Maintenance Manual SA S92-AMM-000, Task, 53-70-00-900-001).
February 19, 2014 Revision A – April 25, 2014 3SPECIAL SERVICE INSTRUCTIONS NO. 92-070A
(17) Close No. 1 and No. 2 engine cowling/work platform. (Refer to Maintenance Manual SA S92A-AMM-000, Task, 53-70-00-900-001). C. Return helicopter to service. D. Perform operational check as follows:(1) Perform test procedures. (Refer to Functional Check Flight Procedures Manual, SA S92AFCP-000). (2) Perform IBIT test. (Refer to Maintenance Manual SA S92A-AMM-000, Task, 30-61-00-710- 001).

February 19, 2014 Revision A – April 25, 2014 4SPECIAL SERVICE INSTRUCTIONS NO. 92-070A

NO. 1 AC GENERATOR FEEDER AND HYDRAULIC LINES CLEARANCE FIGURE 1

February 19, 2014 Revision A – April 25, 2014 5SPECIAL SERVICE INSTRUCTIONS NO. 92-070A
E. Record of compliance: (1) Make helicopter logbook entries to show compliance with this SSI as follows: (a) Make helicopter level logbook entry on form SA7343-15 (Aircraft ASB and CSN Release Signoff). (b) When SSI modifies a component that can be removed from this helicopter: 1. Make component log card entries on forms SA7343-22 (Aircraft Component Log Cards) & SA7343-21 (Component Log Cards) as applicable. 2. If a component modified by this SSI does not have a log card and the SSI does not create one, then annotate compliance on the next higher assembly that the component belongs to which does have a log card. (2) Upon compliance with this SSI, complete attached SPECIAL SERVICE INSTRUCTIONS COMPLIANCE RECORD CARD and return it to Sikorsky Aircraft Corporation.

February 19, 2014 Revision A – April 25, 2014 6SPECIAL SERVICE INSTRUCTIONS NO. 92-070A

Electrical Load Data : None. Software Load Data : None. Weight and Balance : Change resulting from these instructions is as follows: W/I Upper Deck Reroute F/M: Change in weight: +23.0 lb @ station 302.5, +7.0 in. lbs/1000, BL 2.9 (LH), +0.1 in. lbs/1000 W/I Miscellaneous Hardware Kit: Change in weight: +25.0 lb @ station 300.0, +7.5 in. lbs/1000, BL 0.0, 0.0 in. lbs/1000 Mod Kit Mounting Provisions Electrical Lines: Change in weight: +0.7lb @ station 310.0, +0.2 in. lbs/1000, BL 0.0, 0.0 in. lbs/1000 Manpower (Estimated) : Task No. of Men No. of Hours Man-Hours* 

### Gain Access (Covers an d Interior) 2 2.75 5.5 Airframe (Modifications, Brackets, Penetrations) 2 15.5 31.0 Electrical (Removal and Installation of Harnesses) 2 9.5 19.0 Perform Operations checks (Electrical and Rips) 2 1.15 2.3
Total 57.80 *Estimate does not include time required to prep are helicopter or return it to flight status. Material Information : F. Modification Kit Required:

Qty Nomenclature Part Number Source



### 1 Mod Kit Collector, Top Deck W/I 92070-55094-011 (1) Consisting of: 1 W/I Upper Deck Reroute F/M 92070-55034-011 (1) 1 Mod Kit Mounting Provisions Electrical Lines 92070-20059-011 (1)

G. Consumable Materials: None.

February 19, 2014 Revision A – April 25, 2014 7SPECIAL SERVICE INSTRUCTIONS NO. 92-070A
H. Support Equipment: None. I. Tooling Required:

Qty Nomenclature Part Number Source



### 1 Torque Wrench (50 - 250 in. lbs) Comm ercially Available or equivalent (2)

J. Source: (1) For parts availability and lead time requirements contact your Customer Service Representative at Helicopter Support Inc. (HSI). Submit a (cost/no-cost) purchase order referencing this SSI number and the helicopter serial number(s) on which these parts will be used. This will allow HSI and operator to track shipment and receipt of parts. Orders will be accepted by letter, telephone, facsimile (FAX), or through the HSI website: www.HSIUS.com . For prompt shipment, reference address of each shipping destination. Direct your order to: HELICOPTER SUPPORT INC. 124 Quarry Road P.O. Box 111068 Trumbull, Connecticut 06611 U.S.A. Attn: Customer Service FAX: (203) 416-4291, Telephone: (203) 416-4000 HSI website: www.HSIUS.com (2) Available through normal supply channels.

February 19, 2014 Revision A – April 25, 2014 8

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SIKORSKY AIRCRAFT CORPORATION 

# FACSIMILE NUMBER (860) 998-7565
EMAIL ADDRESS: GPSIKSASProductSafet@utc.com

ATTENTION: SAS PRODUCT SAFETY MANAGER SIKORSKY AEROSPACE SERVICES

(Fold Up to Arrows) 

# IMPORTANT NOTICE Upon COMPLIANCE with the attached SSI, Sikorsky requests your cooperation in completing and returning this ENTIRE PAGE by MAIL, FAX, or scan & EMAIL.

Please fill in the requested information at the bottom of the page, so we may maintain proper records documenting the configuration of your aircraft. This information is useful when determining configuration and effectiv ity of issues affecting fielded aircraft. This request is in keeping with our policy to assure that our customers receive the latest information applicable for the mainte nance of your aircraft. Thank you. SPECIAL SERVICE INSTRUCTION:

________________ Compliance Record Card TITLE: ___________________________________________________________________

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___________________________________________________________________ OWNER/OPERATOR: _____________________________________________________ SUBMITTED BY : ___________________________ DATE: ____________________ FOLLOWING SERIAL NUMBERS ARE NOT AFFECTED BY THIS SSI SSI HAS BEEN COMPLIED WITH ON THE FOLLOWING SERIAL NUMBERS

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___________ ___________ ___________ ___________ ___________ ___________ N:

________________ SSI No. 92-070A



### ___________________________________________________________________

___________________________________________________________________

___________________________________________________________________ R/OP ERAT OR : ________________ STANDARD PRACTICES – AIRFRAME – Clam ping Electrical Wires and Bundles - Upper Deck Wiring Harness Installation, Field ModificationNo Postage Necessary 

### BUSINESS REPLY MAIL FIRST-CLASS MAIL PERMIT NO. 432 BRIDGEPORT CT POSTAGE WILL BE PAID BY ADDRESSEE 

### SIKORSKY AIRCRAFT CORPORATION P.O. BOX 9729 6900 MAIN STREET STRATFORD, CONNECTICUT 06615-9129 U.S.A. MAILSTOP: S328A ATTENTION: SAS PRODUCT SAFETY MANAGER SIKORSKY AEROSPACE SERVICES



## Please complete the form on the reverse side and FAX to 

# FACSIMILE NUMBER (860) 998-7565 Or scan and email to: EMAIL ADDRESS: GPSIKSASProductSafet@utc.com or fold and return ENTIRE form to Sikorsky Aircraft Corporation