Honeywell ASCa Inc.

3333 Unity Drive

Mississauga, Ontario L5L 3S6

Canada

CAGE: 07217

Telephone: 800-601-3099 (Toll Free U.S.A./Canada)

Telephone: 602-365-3099 (International Direct)

Website: www.myaerospace.com

SERVICE BULLETIN

ALERT

COMMUNICATIONS - RESCU 406 (AF/AFN) EMERGENCY LOCATOR TRANSMITTER (ELT)

TRANSMITTER UNIT (TU) - Battery Installation Inspection and ReInstallation Instructions

Legal Notice

NOTICE: This is a CATEGORY 1, SAFETY alert service bulletin.

Export Control

This document contains technical data and is subject to Canadian and U.S. export regulations. If these

commodities, technology, or software were exported from Canada, no export permit is required. If these

commodities, technology, or software were exported from the United States, they are in accordance with the

export administration regulations. Diversion contrary to Canadian or U.S. law is prohibited.

ECCN: 9E991.

Proprietary Information

Honeywell - Confidential

THIS COPYRIGHTED WORK AND ALL INFORMATION ARE THE PROPERTY OF HONEYWELL ASCa

INC., CONTAIN TRADE SECRETS AND MAY NOT, IN WHOLE OR IN PART, BE USED, DUPLICATED, OR

DISCLOSED FOR ANY PURPOSE WITHOUT PRIOR WRITTEN PERMISSION OF HONEYWELL ASCa

INC. ALL RIGHTS RESERVED.

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Honeywell Materials License Agreement

The documents and information contained herein (“the Materials”) are the proprietary data of Honeywell ASCa

Inc., and Honeywell Intellectual Properties Inc., (collectively “Honeywell”). These Materials are provided for the

exclusive use of Honeywell Service Centers; Honeywell-authorized repair facilities; operators of Honeywell

aerospace products subject to an applicable product support agreement, their wholly owned-subsidiaries or a

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these Materials, except to the extent that any terms and conditions of another applicable agreement with

Honeywell regarding the operation, maintenance, or repair of Honeywell aerospace products conflict with the

terms and conditions of this License Agreement, in which case the terms and conditions of the other agreement

will govern. However, this License Agreement will govern in the event of a conflict between its terms and

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1. License Grant - If you are a party to an applicable product support agreement, a Honeywell Service Center

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license to use these Materials to operate, maintain, or repair Honeywell aerospace products only in accordance

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If you are a direct recipient of these Materials from Honeywell’s Aerospace Technical Publication Distribution

and are not a party to an agreement related to the operation, maintenance or repair of Honeywell aerospace

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5. Copies of Materials - Unless you have the express written permission of Honeywell, you may not make or

permit making of copies of the Materials. Notwithstanding the foregoing, you may make copies of only portions

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7. Remedies - Honeywell reserves the right to pursue all available remedies and damages resulting from a

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8. Limitation of Liability - Honeywell does not make any representation regarding the use or sufficiency of the

Materials. THERE ARE NO OTHER WARRANTIES, WHETHER WRITTEN OR ORAL, EXPRESS, IMPLIED

OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, (i) WARRANTIES ARISING FROM COURSE OF

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PERFORMANCE, DEALING, USAGE, OR TRADE, WHICH ARE HEREBY EXPRESSLY DISCLAIMED, OR (ii)

WARRANTIES AGAINST INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OF THIRD PARTIES,

EVEN IF HONEYWELL HAS BEEN ADVISED OF ANY SUCH INFRINGEMENT. IN NO EVENT WILL

HONEYWELL BE LIABLE FOR ANY INCIDENTAL DAMAGES, CONSEQUENTIAL DAMAGES, SPECIAL

DAMAGES, INDIRECT DAMAGES, LOSS OF PROFITS, LOSS OF REVENUES, OR LOSS OF USE,

EVEN IF INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. TO THE EXTENT PERMITTED BY

APPLICABLE LAW, THESE LIMITATIONS AND EXCLUSIONS WILL APPLY REGARDLESS OF WHETHER

LIABILITY ARISES FROM BREACH OF CONTRACT, WARRANTY, TORT (INCLUDING BUT NOT LIMITED

TO NEGLIGENCE), BY OPERATION OF LAW, OR OTHERWISE.

9. Controlling Law - This License shall be governed and construed in accordance with the laws of the State of

New York without regard to the conflicts of laws provisions thereof. This license sets forth the entire agreement

between you and Honeywell and may only be modified by a writing duly executed by the duly authorized

representatives of the parties.

Safety Advisory

WARNING: BEFORE THE MATERIALS CALLED OUT IN THIS PUBLICATION ARE USED, KNOW THE

HANDLING, STORAGE AND DISPOSAL PRECAUTIONS RECOMMENDED BY THE MANUFACTURER OR

SUPPLIER. FAILURE TO OBEY THE MANUFACTURERS’ OR SUPPLIERS’ RECOMMENDATIONS CAN

RESULT IN PERSONAL INJURY OR DISEASE.

This publication describes physical and chemical processes which can make it necessary to use chemicals,

solvents, paints, and other commercially available materials. The user of this publication must get the Material

Safety Data Sheets (OSHA Form 174 or equivalent) from the manufacturers or suppliers of the materials to

be used. The user must know the manufacturer/ supplier data and obey the procedures, recommendations,

warnings and cautions set forth for the safe use, handling, storage, and disposal of the materials.

Warranty/Liability Advisory

WARNING: HONEYWELL ASSUMES NO RESPONSIBILITY FOR ANY HONEYWELL EQUIPMENT

WHICH IS NOT MAINTAINED AND/OR REPAIRED IN ACCORDANCE WITH HONEYWELL’S PUBLISHED

INSTRUCTIONS AND/OR HONEYWELL’S FAA/SFAR 36 REPAIR AUTHORIZATION. NEITHER DOES

HONEYWELL ASSUME RESPONSIBILITY FOR SPECIAL TOOLS AND TEST EQUIPMENT FABRICATED

BY COMPANIES OTHER THAN HONEYWELL.

WARNING: INCORRECTLY REPAIRED COMPONENTS CAN AFFECT AIRWORTHINESS OR DECREASE

THE LIFE OF THE COMPONENTS. INCORRECTLY FABRICATED SPECIAL TOOLING OR TEST

EQUIPMENT CAN RESULT IN DAMAGE TO THE PRODUCT COMPONENTS OR GIVE UNSATISFACTORY

RESULTS.

Copyright - Notice

Copyright 2013 Honeywell ASCa Inc. All rights reserved.

Honeywell is a registered trademark of Honeywell ASCa Inc.

All other marks are owned by their respective companies.

THIS IS THE SB FOSI - DATE: 20121114

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Transmittal Information

ATA Number 1152682-23-A22 (Publication Number D201307000054)

Summary

This revision is a FULL replacement. This revision includes the changes that follow:

• Added the instructions for battery removal, shipping, and disposal.

• Revised the instructions for return to service.

Revision History

This alert service bulletin has had one revision as shown in Table 1.

Table 1. Revision History

Revision Number Revision Date

0 1 Aug 2013

1 8 Aug 2013

Highlights

This section transmits Revision 1 to Service Bulletin, ATA Number 1152682-23-A22 (Pub Number

D201307000054), and contains these changes:

The list of highlights tells the users about the changes that the revision makes. The list has three columns. The

"Page" column shows the block of data that the revision changes and the page on which the block begins.

The block can be a section, subsection, graphic, table, etc. Revision marks give the location of the change in

the block. The "Description" column tells the user about the change or changes in each block. A paragraph,

table, or figure reference often comes before the description. The "Effectivity" column tells the user about

the part number(s) to which the block of information applies. The default value for this column is "All." "All"

means that the block applies to all parts.

Page Description Effectivity

7 Paragraph 1.A.(1). Added the information about manufacturer’s instructions to

this paragraph.

All

7 Paragraph 1.A.(1). Changed the serial number format in the NOTE following

this paragraph.

All

7 Paragraph 1.D.(1). Added the reference to Paragraph 4 in this paragraph. All

7 Paragraph 1.D.(1). Deleted the reference to IPC/WHMA-A-620B Class 3

“Requirements and Acceptance for Cable and Wire Harness Assemblies” in

the last sentence of this paragraph.

All

8 Paragraph 1.E.(2). Added the information in this paragraph about previously

inspected units.

All

8 Paragraph 1.K.(1).(a). Added the statement in this paragraph referencing the

Honeywell Publications table.

All

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Page Description Effectivity

8 Paragraph 1.K.(1).(a). Changed the temporary revision number in the Honeywell

Publications table from TR 23-1 to TR 23-2.

All

8 Paragraph 1.K.(2). Added the statement in this paragraph referencing other

documents.

All

8 Paragraph 1.K.(3). Deleted the reference to IPC/WHMA-A-620B Class 3

“Requirements and Acceptance for Cable and Wire Harness Assemblies” in

this paragraph.

All

11 Paragraph 2.E.(1). Changed the revision number of this alert service bulletin

from 0 to 1.

All

12 Paragraph 3.A.(1). Added the information in this paragraph. All

12 Paragraph 3.A.(2). Added the last sentence about references in this paragraph. All

13 Paragraph 3.C.(1). Added the information for removal of the battery from the

TU to this paragraph.

All

15 Paragraph 3.C.(4). Changed the information about disposal of the battery pack All

15 Paragraph 3.C.(4). Added address for returned battery packs. All

16 Paragraph 3.C.(5). Added the information about shipping the battery pack to

this paragraph.

All

20 Paragraph 3.F.(2). Changed the revision number of this alert service bulletin

from 0 to 1.

All

21 Paragraph 3.G. Revised the instructions for applicable Return to Service. All

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Blank Page

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1. Planning Information

A. Effectivity

(1) This alert service bulletin is applicable to PNs 1152682-1, 1152682-2, and 1152682-3

given in Table 2, with serial numbers prior to 1152682-06131 with the exception of

transmitter units (TUs) that have been ink marked with Manufacturer’s Instructions

“13C0343 Rev C” on the underside of the unit and/or Manufacturer’s Instructions

“13C0343 Rev D” (or subsequent) adjacent to the battery expiry label. These

manufacturer’s inspection instructions may continue to be marked on units with serial

numbers after 1152682-06131 as well.

NOTE: Honeywell has used a different serial number format in the past which looks

like this: xxxC-xxx. All serial numbers that are of this format precede SN

1152682-06131, and are affected by this alert service bulletin.

Table 2. Applicable Component(s)

PN Equipment Designator

1152682-1 RESCU 406 (AF) TU

1152682-2 RESCU 406 (AFN) TU

1152682-3 RESCU 406 (AFN) TU

B. Concurrent Requirements

(1) Not applicable.

C. Reason

(1) There is potential for the battery wires to be pinched under the battery cover of the

TUs listed in Table 2.

(2) This alert service bulletin provides instructions to inspect the battery and associated

wiring, and correct this potential anomaly.

D. Description

(1) The TUs have effective built-in protection against the effects associated with electrical

short circuit from a potentially pinched wire. However, if the potential pinched wire

damage is severe enough, it may degrade the operation of the TU. This alert service

bulletin provides inspection criteria in Paragraph 4 for pinched or damaged battery

leads on both the battery and on the TU side of the battery lead connector.

(2) This procedure also inspects for any damage to the battery itself.

(3) This procedure also inspects for any damage to the battery cover gasket which may

prevent it from forming a water-tight seal around the battery compartment.

E. Compliance

(1) Operators are strongly encouraged to inspect and correct affected RESCU 406

AF/AFN TUs using the instructions provided in this alert service bulletin at the next

possible access to the TU.

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(2) Units previously inspected and marked with “SB 1152682-23-A22 Rev. 0” are also

in compliance with this Revision 1 of this alert service bulletin and do not need to

be re-inspected.

(3) Additional compliance direction may be directed by regulatory agencies.

F. Approval

(1) This alert service bulletin has been reviewed and approved by Transport Canada

Civil Aviation (TCCA).

(2) Courtesy copies provided to affected aircraft OEMs.

G. Manpower

(1) The time estimate to do this alert service bulletin is 0.25 manhour(s).

NOTE: The manhours estimate does not include the time to access the TU and

remove the unit from the aircraft, and then to reinstall it into the aircraft.

H. Weight and Balance

(1) None.

I. Electrical Load Data

(1) Not changed.

J. Software Accomplishment Summary

(1) Not applicable.

K. References

(1) Publications.

(a) The Honeywell publications that support this product are given in Table 3.

Table 3. Honeywell Publications

Component Maintenance Manual (CMM)

Outline PN ATA Number

1152682-1 23-24-01 with temporary revision (TR) 23-2

1152682-2, -3 23-24-02 with TR 23-2

1152682-2 23-24-04 1 with TR 23-2

NOTE:

1. Applicable to model B-787 only.

NOTE: Unless specified differently, you can use subsequent revisions.

(2) Other documents that support this product in service include the applicable aircraft

maintenance manual (AMM) or equivalent platform application documentation.

(3) Deleted.

L. Other Publications Affected

(1) The same as the publication(s) given in Paragraph 1.K.(1).

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M. Interchangeability or Intermixability of Parts

(1) This alert service bulletin does not have an effect on interchangeability or intermixability

at the aircraft level.

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2. Material Information

A. Material - Price and Availability

(1) If a TU is checked and found to require more than just battery and/or battery cover

replacement, then it should be returned to Honeywell for repair.

(2) A very limited number of exchange units may be available to prevent aircraft on ground

(AOG) situations. Operators are requested to perform inspections at their facilities

and only return TUs that require more than battery and/or battery cover replacement

(post inspection). Operators are also requested to utilize their existing spares and

allowable minimum equipment list (MEL) provisions prior to making a request for an

exchange TU. Exchange TUs will be issued subject to an urgent AOG priority and

stock availability basis.

(3) If battery replacement is found to be required per this procedure, then the cost of a

replacement battery will be waived during the free of charge period (refer to Paragraph

2.A.(4)), after which the cost may be covered by original battery warranty or prorated

over the expected battery life.

(4) The time required to perform the inspections (up to the limit listed in Paragraph

1.G.), battery replacements due to failed inspections, and repairs to units returned

due to failed inspections contained in this alert service bulletin performed through

December 31, 2013, will be reimbursed and/or provided free of charge. Field actions

performed from January 1, 2014 onward will be subject to existing warranty and

chargeability/pricing.

B. Industry Support Information

(1) For replacement batteries and/or repair and recertification inquiries, please contact:

Honeywell ASCa Inc.,

Customer and Product Support, Customer Support Operations

3333 Unity Drive

Mississauga, Ontario

Canada L5L 3S6

Telephone: 800-601-3099 (Toll Free U.S.A./Canada)

Telephone: 602-365-3099 (International)

E-mail: AeroR&OAvionics@honeywell.com

Web: www.myaerospace.com

(2) For orders or quotations of new units or replacement batteries, please contact:

Honeywell ASCa Inc.,

Customer Support Operations

Telephone: 800-601-3099 (Toll Free U.S.A./Canada)

Telephone: 602-365-3099 (International)

Fax: 602-365-3343

E-mail: orders@honeywell.com

E-mail: quotes@honeywell.com

Web: www.myaerospace.com

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(3) For technical inquiries regarding the TU, please contact:

Honeywell Aerospace Inc.,

Technical Operations Center

Telephone: 800-601-3099 (Toll Free U.S.A./Canada)

Telephone: 602-365-3099 (International)

Fax: 602-365-3343

E-mail: AeroTechSupport@honeywell.com

Web: www.myaerospace.com

C. Material Necessary for Each Component

(1) Material(s) supplied by operator is/are given in Table 4.

NOTE: The materials given in Table 4 are the consumable products required for

completion of this alert service bulletin.

Table 4. Materials

Number Description Source

NOTE: You can use equivalent alternative materials unless specified differently. The user must find

equivalent alternatives.

Loctite-242 retaining compound CAGE: 05972

isopropyl alcohol (FS TT-I-735) Commercially available

D. Material Necessary for Each Spare

(1) The consumable materials necessary to do this alert service bulletin for each spare

TU are the same as for the in-service TU. Refer to Table 4 in Paragraph 2.C. for

consumable materials.

E. Reidentified Parts

(1) TUs which have been inspected and/or serviced by an operator using the instructions

provided in Paragraph 3 of this alert service bulletin should be marked with the text “SB

1152682-23-A22 Rev 1” in the location shown in Figure 12. Refer to Paragraph 3.F.

(2) TUs which have been inspected and/or serviced by Honeywell will be identified by

placing a label in the location shown in Figure 13. Refer to Paragraph 3.F.

F. Tooling - Price and Availability

(1) Refer to Table 5 for price and availability of tooling.

Table 5. Tooling - Price and Availability

PN Keyword/Nomenclature Availability

NA Torque wrench (0-50 in-lbs) Commercially available

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3. Accomplishment Instructions

A. General Information

(1) The accomplishment instructions and inspection criteria required to complete the

inspection of affected TUs are contained in Paragraph 3 and Paragraph 4 of this

alert service bulletin.

(2) The manuals given in Paragraph 1.K. of this alert service bulletin contain the

disassembly, cleaning, check, assembly, and test instructions. These manuals are for

reference only and are not required to complete the inspection and re-identification of

TUs affected by this alert service bulletin.

B. Inspection of Battery Cover for Evidence of Improper Battery Wire Installation

(1) Make sure the toggle switch on the face of the TU is set to “OFF” position.

(2) Visually inspect the battery cover (no measurement required) looking for bulges or

gaps in the cover which indicate that wire(s) have been improperly installed under the

cover. Refer to Figure 1 and Figure 2.

Figure 1. (Sheet 1 of 1) Improper Installation with Wires Under Battery Cover

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Figure 2. (Sheet 1 of 1) Close Up View of Improper Installation with Wires Under Battery Cover

(3) A proper installation will have a uniform gap all the way around the cover. Refer

to Figure 3.

Figure 3. (Sheet 1 of 1) Proper Battery Cover Installation

(4) Reject the TU if any cover deformation (gaps or bulges) is identified. Return TU to

Honeywell for repair. Refer to Paragraph 2.B.(1) for contact information.

C. Removal and Inspection of Battery

(1) Remove the battery from the TU, PN 1152682-1, -2, or -3, as follows:

(a) Remove the TU from the aircraft. Refer to the applicable aircraft maintenance

manual (AMM) or equivalent platform application documentation.

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(b) Remove eight screws securing the battery pack cover to the TU and remove

the cover.

NOTE: Retain the screws for reinstallation of battery cover.

CAUTION: GRASP BOTH ENDS OF THE BATTERY PACK CONNECTOR

TO PULL APART. DO NOT PULL ON CONNECTOR WIRES TO

DISCONNECT BATTERY PACK CONNECTOR.

(c) Disconnect battery pack connector.

(d) Unfold battery pack pull-tabs and remove battery pack by pulling tabs

straight up.

(2) Inspect the battery looking for damage to the black protective cover. Refer to Figure 4.

Figure 4. (Sheet 1 of 1) Battery Protective Cover Inspection

(3) Inspect the battery for any damage to the wires or insulation. Refer to Figure 5

and Figure 6.

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Figure 5. (Sheet 1 of 1) Battery Wire Inspection

Figure 6. (Sheet 1 of 1) Detailed Battery Wire Inspection Location

(4) Reject the battery if any damage to either the black protective cover or if the wires are

identified to be beyond the limits of the inspection criteria provided in Paragraph 4

of this alert service bulletin. Return the rejected battery pack to Honeywell per the

return address below:

Honeywell ASCa Inc. (Aerospace-Toronto)

Attn: Nancy Elsayed, P. Eng.

3333 Unity Drive

Mississauga, Otario

Canada L5L 3S6

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(5) The battery pack used in the TU is safe for transport in bulk by itself as well as installed

in the TU on passenger aircraft in accordance with exemption 173.185 (part c) of the

Federal Department of Transportation Title 49 Code of Regulations (CFR).

D. Inspection of TU Battery Connection Wires and Battery Cover Gasketing

(1) Inspect the TU battery connection wires looking for any indication of damage. Damage

could include flattening or exposed wires due to tears in insulation. Refer to Figure

7, Figure 8, and Paragraph 4.

Figure 7. (Sheet 1 of 1) TU Wire Inspection

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Figure 8. (Sheet 1 of 1) Damaged TU Wires (Flattening Due to Pinching From Cover)

(2) Reject the TU if any damage to the wires is identified to be beyond the limits of the

inspection criteria provided in Paragraph 4 of this alert service bulletin. Return the TU

to Honeywell for repair. Refer to Paragraph 2.B.(1) for contact information.

(3) Inspect the gasket of the battery cover, PN 1096856-1, to make sure that it would form

a water-tight seal around the battery compartment. Refer to Figure 9. The gasket may

be slightly compressed where it was in contact with the TU’s surface. This uniform

compression is expected and is acceptable. However, the battery cover should be

rejected if the gasket shows any sign of deformation or indentation caused by the

wires or the blue pull-tabs having been trapped between the cover and the TU which

might compromise the water-tight seal around the battery compartment.

NOTE: The light gray cushioning material in the center of the battery cover is not

included in the inspection, and is expected to contain indentations from the

battery harness and battery pack.

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Figure 9. (Sheet 1 of 1) Example of Damaged Battery Cover Gasket Material From Battery Leads or

Battery Pull Straps

E. Battery and Cover Installation

(1) If the battery pack was not damaged in Paragraph 3.C. and does not require

replacement, go to Paragraph 3.E.(3) below.

(2) If the battery pack requires replacement, proceed as follows:

(a) Print or write the new battery expiration date on a Brady label, PN PTL-29-428,

or similar waterproof label with an adhesive backing.

(b) Affix the new label to the battery expiration section of the TU identification label.

(3) Install the existing or new lithium battery pack in the battery compartment as follows:

(a) While holding the transmitter battery pack connector out of the way, feed the

battery and TU wires through the blue pull-tabs.

(b) Connect the battery pack connector to the TU connector.

(c) Verify that the wires are in the battery compartment. Refer to Figure 10.

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Figure 10. (Sheet 1 of 1) Verification that Wires are Within the Battery Compartment

(d) Place the battery cover on the chassis and be careful to make sure that all

wires are inside the TU and make sure that the blue pull-tabs are properly

folded before pushing it down. Refer to Figure 11.

Figure 11. (Sheet 1 of 1) Verification That Blue Pull-Tabs are in Correct Position When Installing the

Cover

(e) Add a small amount of Loctite-242 to the screws.

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(f) Attach cover with 8 screws that were retained during the cover removal using

a Phillips #2 screw driver. Starting with the 4 center position screws, torque

screws to 9.6 inch-pounds (1.08 Nm).

(4) Repeat cover inspection as outlined in Paragraph 3.B.

F. Identification that Inspection and/or Battery Replacement Completed

(1) Remove fingerprints, grease, and/or other contaminants from the location shown in

Figure 12 using isopropyl alcohol, and dry using a clean lint-free cloth.

(2) TUs which have been inspected and/or serviced by an operator using the instructions

provided in Paragraph 3 of this alert service bulletin should be marked with the text

“SB 1152682-23-A22 Rev 1” using indelible ink in the location shown in Figure 12.

Alternatively, operators may use Brady label, PN PTL-29-428, or a similar waterproof

label with adhesive backing.

Figure 12. (Sheet 1 of 1) Location of Marking on Units Inspected and/or Serviced by Operator

(3) TUs which have been inspected and/or serviced by Honeywell will be identified by

placing the label shown in Figure 13 in the location shown in Figure 12.

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Figure 13. (Sheet 1 of 1) Label Placed on Units Inspected and/or Serviced by Honeywell

G. Return to Service

(1) For units inspected in the field and reinstalled on the aircraft, perform the applicable

return to service (or maintenance operational check) specified by the applicable

aircraft maintenance manual (AMM) or equivalent platform application documentation.

(2) For spare units not installed on aircraft, no additional testing is required.

(3) Units returned to service centers will have current applicable acceptance tests

performed prior to return to customers.

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4. Inspection Criteria

A. Appendix A, Wire Insulation Damage

(1) Coatings added over insulation base material such as resin coatings over polyimide

are not considered to be part of the insulation and these criteria are not intended to be

applicable to those coatings.

(2) The cut ends of some insulation materials, particularly those with a fiberglass barrier,

may show fraying. Acceptability of this fraying should be agreed upon between the

user and manufacturer.

(3) These criteria are also applicable to post-assembly acceptance.

(a) Insulation Inspection

• Insulation has been trimmed neatly with no signs of pinching, pulling,

fraying, discoloration, charring or burning. Refer to Figure 14.

Figure 14. (Sheet 1 of 1) Example of Target Insulation

(b) Acceptable Criteria

• A slight, uniform impression in the insulation from the gripping of

mechanical strippers.

• Chemical solutions, paste, and creams used to strip solid wires do not

cause degradation to the wire.

• Slight discoloration of insulation resulting from thermal processing is

permissible, provided it is not charred, cracked or split. Refer to Figure 15.

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Figure 15. (Sheet 1 of 1) Example of Acceptable Insulation

(c) Defect/Reject Criteria

• Any cuts, breaks, cracks or splits in insulation (not shown).

• Insulation thickness is reduced by more than 20 percent. Refer to Figure

16 and Figure 17.

• Uneven or ragged pieces of insulation (frays, tails, and tags) are greater

than 50 percent of the insulation outside diameter or 0.039 inch (1 mm),

whichever is more. Refer to Figure 18.

• Insulation is charred. Refer to Figure 19.

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Figure 16. (Sheet 1 of 1) Example of Reduced Insulation Thickness

Figure 17. (Sheet 1 of 1) Example of Reduced Insulation Thickness

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Figure 18. (Sheet 1 of 1) Example of Uneven Pieces of Insulation

Figure 19. (Sheet 1 of 1) Example of Charred Insulation

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