# SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page TS-1 of TS-2 

### TRANSMITTAL SHEET Original issue

This page transmits Original issue of Service Bulletin No. ATR72-25-1148. General information concerning this document is available in Service Letter No. ATR72-00-6005.



### TITLE : Equipment/Furnishings - Overhead stowage compartments - Removal of fittings and hooks at level of type III emergency exit doors

© ATR. All rights reserved. Confidential and proprietary document. This document shall not be reproduced or disclosed to a third party without the written consent of ATR. This document and its content shall not be used for any purpose other than that for which it is supplied. ATR, its logo, the distinctive ATR airc raft profiles and patented information relating to the ATR aircraft are the exclusive property of ATR and are subject to copyright. This document and all information contained herein are the sole property of ATR. No intellectual property right is granted through, or induced by, the delivery of this document or the disclosure of its content.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page TS-2 of TS-2
© ATR. All rights reserved. Confidential and proprietary document. 1 – TABLE OF CONTENTS TRANSMITTAL SHEET ...................................................................................Page TS-1 to TS-2 ACCOMPLISHMENT REPORT ...................................................................... Page AR-1 to AR-1 PLANNING INFORMATION............................................................................... Page PI-1 to PI-4 MATERIAL INFORMATION.............................................................................. Page MI-1 to MI-2 ACCOMPLISHMENT INSTRUCTIONS ............................................................. Page AI-1 to AI-8 ILLUSTRATIONS................................................................................................ Page IL-1 to IL-4

2 – REVISION SEQUENCES

Issue or Revision Date Additional work
Original issue Nov 21/14 -

# SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AR-1
© ATR. All rights reserved. Confidential and proprietary document.



### ACCOMPLISHMENT REPORT SERVICE BULLETIN No. ATR72-25-1148 Original issue

Send this report to:
ATR RETROFIT ENGINEERING 1 ALLEE PIERRE NADOT 31712 BLAGNAC CEDEX FRANCE phone : +33 (0)5 62 21 62 21 fax : +33 (0)5 62 21 69 41 e-mail : techdesk@atr.fr

Aircraft identification Aircraft MSN (on which this Service Bulletin has been accomplished): Aircraft registration number: Number of flights: Flight hours:

Accomplishment date of this Service Bulletin :

Maintenance organisation identification Maintenance organisation name: Name & Signature:

Date:

# SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page PI-1
© ATR. All rights reserved. Confidential and proprietary document. COMPLIANCE : RECOMMENDED MODIFICATION : 07152 L2248 07294 L2461



### TITLE : Equipment/Furnishings - Overhead stowage compartments - Removal of fittings and hooks at level of type III emergency exit doors

1. PLANNING INFORMATION
A. EFFECTIVITY (1) Aircraft models The approved change used to generate this document has been certified on the following ATR72 models:

ATR72-101 ATR72-102 ATR72-201 ATR72-202 ATR72-211 ATR72-212 ATR72-212A
NO NO NO NO NO NO YES

(2) Aircraft

MSN Kit(s) S251148
966, 967, 968, 969, 971, 972, 973, 985, 987, 988, 989, 991, 992, 993, 996, 997, 998, 1020, 1021, 1024, 1025, 1026, 1027, 1030, 1033, 1039, 1043, 1044, 1046, 1047, 1048, 1052, 1053, 1054, 1055, 1057, 1058, 1060, 1061, 1062, 1063, 1066, 1067, 1072, 1073, 1074, 1076, 1078, 1079, 1082, 1084, 1087, 1088, 1090, 1093 A01

1070 A02 For each aircraft MSN, operator should order the mentioned kit(s). Other parts or equipment could be required for embodiment of this Service Bulletin. Please refer to chapter "MATERIAL INFORMATION" for details.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page PI-2
© ATR. All rights reserved. Confidential and proprietary document. NOTE 1 : This Service Bulletin is only applicable on aircraft equipped with the modification No. 06517.
NOTE 2 : This Service Bulletin is not applicable on aircraft equipped with the modification No. 07152 or Service Bulletin No. ATR72-25-1141 or on the following aircraft on which the removal of the fittings has been performed through concessions:

- MSN 1089, concession No. TR-004402383,

- MSN 1094, concession No. TR-004400400,

- MSN 1095, concession No. TR-004405060,

- MSN 1097, concession No. TR-004400333,

- MSN 1098, concession No. TR-004400403,

- MSN 1099, concession No. TR-004400368,

- MSN 1100, concession No. TR-004411635,

- MSN 1101, concession No. TR-004401422,

- MSN 1102, concession No. TR-004401142. (3) Spares The following stock items are modifiable (or not) according to the table below.

None.

B. REASON A case of interference/insufficient gap between a type III emergency exit door and the overhead stowage compartment hook and the fitting installed on the rail has been detected. In order to secure an adequate gap for the opening of the type III emergency exit doors, accomplishment of this Service Bulletin consists in removing the hooks and the fittings at level of the LH and RH type III emergency exit doors.
COMPLIANCE : Accomplishment of this Service Bulletin is recommended by ATR.

C. DESCRIPTION Accomplishment of this Service Bulletin consists in carrying out the following jobs: (1) In zones 231 and 232, removal of hooks on overhead stowage compartments and removal of fittings on lateral railsSERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page PI-3
© ATR. All rights reserved. Confidential and proprietary document. (2) In zone 232, removal of hooks on overhead stowage compartments and removal of fittings on lateral rails

D. APPROVAL The technical content of this document is approved under the authority of DOA No. EASA.21J.044.

E. MANPOWER

Manhours
Mechanic 1 Electrician None
Total manhours 1 Elapsed time (hours) 1

The above estimates are only provided for general guidance in operator's modification planning.
NOTE : This Service Bulletin assumes that the aircraft has been placed in the appropriate maintenance configuration. The manhours/elapsed time estimates do not include preparation for the modification, non-productive elapsed time or administrative functions.

F. WEIGHT AND BALANCE Valid for aircraft not equipped with the modification No. 06973 MEW : - 0.5 kg (- 1.102 lb) Effect on balance: - 4.198 kg.m (- 364.367 lb.in) Valid for aircraft equipped with the modification No. 06973 MEW : - 0.250 kg (- 0.551 lb) Effect on balance: - 2.099 kg.m (- 182.183 lb.in)SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page PI-4
© ATR. All rights reserved. Confidential and proprietary document. G. REFERENCES The following publications have to be used during accomplishment of this Service Bulletin: AMM (JIC) : 24-40-00 EAD 10000 25-23-22 RAI 10000 25-24-21 OAC 10000 The following modifications and/or retrofit documents are mentioned on this Service Bulletin:

Modification Retrofit document Title

06517 - EQUIPMENT/FURNISHINGS - INSTALL ARMONIA CABIN ON ATR72 STANDARD CONFIGURATION

06973 - EQUIPMENT/FURNISHINGS - UPGRADE ARMONIA CABIN CONFIGURATION FOR A23

07152 ATR72-25-1141 Equipment/Furnishings - Overhead stowage compartments - Removal of fittings at level of type III emergency exit doors

H. AFFECTED PUBLICATIONS (1) Maintenance documentation The following maintenance manuals will be updated after receipt of the Accomplishment Report by ATR:
IPC : 25-23 25-24 (2) Operational documentation

None.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page MI-1
© ATR. All rights reserved. Confidential and proprietary document. 2. MATERIAL INFORMATION
A. MATERIAL - COST AND AVAILABILITY (1) Kits Kits cost and availability, or any further commercial information about Service Bulletin, may be consulted through ATRactive or operator should contact ATR at the following addresses:

www.atractive.com

ATR CUSTOMER SERVICES SPARES SUPPORT 1 ALLEE PIERRE NADOT 31712 BLAGNAC CEDEX FRANCE phone : +33 (0)5 62 21 66 99 fax : +33 (0)5 62 21 61 12 e-mail : kits@atr.fr Or operator should contact the ATR center it is related to, according to its operational area, at the following addresses:
ATR Americas, Inc. 4355 NW 36 th St. Miami Springs, FL 33166 USA phone : +1 (305) 704 9812 fax : +1 (305) 704 9806 e-mail : commercialservices@atramericas.com

ATR EASTERN SUPPORT Pte Ltd. 51 CHANGI BUSINESS PARK CENTRAL 2 #08-02 THE SIGNATURE SINGAPORE 486066 phone : +65 6542 0122 fax : +65 6542 1047 e-mail : commercial.services@atr.com.sg Operator should place a purchase order specifying concerned MSN, Service Bulletin reference and kits reference (according to paragraph 1.A.) through ATRactive or to the ATR center it is related to according to its operational area.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page MI-2
© ATR. All rights reserved. Confidential and proprietary document. B. LIST OF COMPONENTS

Item Part Number Qty Description

Kit S251148A01
- ASNA2080B01 8 Blanking cap

Kit S251148A02
- ASNA2080B01 4 Blanking cap

C. LIST OF MATERIALS - OPERATOR SUPPLIED

None.

D. SPECIAL TOOLS Accomplishment of this Service Bulletin requires use of the following special tools:

None.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AI-1
© ATR. All rights reserved. Confidential and proprietary document. 3. ACCOMPLISHMENT INSTRUCTIONS
A. GENERAL The following instructions assume that work will be accomplished when the aircraft is in the appropriate maintenance configuration.

B. JOB SET-UP (1) De-energize the aircraft electrical network and connect the aircraft to ground as per AMM (JIC) 24-40-00 EAD 10000. (2) Valid for aircraft not equipped with the modification No. 06973 In zones 231 and 232, at level of LH and RH type III emergency exit doors:

- Open the four overhead stowage compartments as per

AMM (JIC) 25-24-21 OAC 10000.

- Open the light and ventilation outlet covers as per AMM (JIC) 25-23-22 RAI 10000. (3) Valid for aircraft equipped with the modification No. 06973 In zone 232, at level of RH type III emergency exit door:

- Open the two overhead stowage compartments as per

AMM (JIC) 25-24-21 OAC 10000.

- Open the light and ventilation outlet covers as per AMM (JIC) 25-23-22 RAI 10000.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AI-2
© ATR. All rights reserved. Confidential and proprietary document. C. MODIFICATION (1) In zones 231 and 232, removal of hooks on overhead stowage compartments and removal of fittings on lateral rails Valid for aircraft not equipped with the modification No. 06973 (a) Removal of hooks On overhead stowage compartments items 10, 11, 12 and 13, remove all the parts listed in the following table.

REMOVAL

Item Description Part Number Qty Discarded Qty Re-used Figure

1 Hook S2522938520100 2 - 1

or

1 Hook S2522930720100 2 - 1

2 Hook S2522938520000 2 - 1

or 2 Hook S2522930720000 2 - 1 3 Screw NAS1801-3-10 8 - 1 4 Washer NAS1149D0316K - 8 1SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AI-3
© ATR. All rights reserved. Confidential and proprietary document. (b) Blanking of remaining holes Blank remaining holes let by removed screws item 3 (Refer to Figure 1) by installing all the parts listed in the following table.

INSTALLATION

Item Description Part Number Qty New Qty from Removal Figure

- Blanking cap ASNA2080B01 8 - -

(c) Re-identification of modified overhead stowage compartments To ensure traceability, according to aircraft configuration, the modified part(s) listed in the table(s) below must be re-identified using indelible ink. The old P/N marking must be crossed out and remains legible. Part(s) listed in the table below must be re-identified in the area shown in the figure.

RE-IDENTIFICATION

Item Old Part Number Description New Part Number Figure

10 S2522928300000 LH overhead stowage compartment 26" S0041106800000 1

or
10 S2522928300200 LH overhead stowage compartment 26" S0041106800200 1

or
10 S2522928300400 LH overhead stowage compartment 26" S0041106800400 1

or
10 S2522967200000 LH overhead stowage compartment 29" S0041106800600 1SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AI-4
© ATR. All rights reserved. Confidential and proprietary document. RE-IDENTIFICATION (continued)

Item Old Part Number Description New Part Number Figure

or
10 S2522967200200 LH overhead stowage compartment 29" S0041106800800 1

or
10 S2522967200400 LH overhead stowage compartment 29" S0041106801000 1

11 S2522928300000 RH overhead stowage compartment 26" S0041106800100 1

or

11 S2522928300200 RH overhead stowage compartment 26" S0041106800300 1

or
11 S2522928300400 RH overhead stowage compartment 26" S0041106800500 1

or

11 S2522967200000 RH overhead stowage compartment 29" S0041106800700 1

or

11 S2522967200200 RH overhead stowage compartment 29" S0041106800900 1

or

11 S2522967200400 RH overhead stowage compartment 29" S0041106801100 1

12 S2522926100000 LH overhead stowage compartment 93" S0041106801200 1

or

12 S2522926100200 LH overhead stowage compartment 93" S0041106801400 1SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AI-5
© ATR. All rights reserved. Confidential and proprietary document. RE-IDENTIFICATION (continued)

Item Old Part Number Description New Part Number Figure

or
12 S2522926100400 LH overhead stowage compartment 93" S0041106801600 1

13 S2522926100000 LH overhead stowage compartment 93" S0041106801300 1

or
13 S2522926100200 LH overhead stowage compartment 93" S0041106801500 1

or
13 S2522926100400 LH overhead stowage compartment 93" S0041106801700 1

(d) Removal of fittings On LH and RH lateral rails, remove all the parts listed in the following table.

REMOVAL

Item Description Part Number Qty Discarded Qty Re-used Figure

5 LH fitting S2522924620000 1 - 1 6 RH fitting S2522924620100 1 - 1 7 Screw NAS1801-3-8 4 - 1 8 Washer ASNA2397-10L 4 - 1 9 Nut ASNA2871-3 4 - 1SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AI-6
© ATR. All rights reserved. Confidential and proprietary document. (2) In zone 232, removal of hooks on overhead stowage compartments and removal of fittings on lateral rails Valid for aircraft equipped with the modification No. 06973 (a) Removal of hooks On overhead stowage compartments items 11 and 13, remove all the parts listed in the following table.

REMOVAL

Item Description Part Number Qty Discarded Qty Re-used Figure

1 Hook S2522930720100 1 - 2 2 Hook S2522930720000 1 - 2 3 Screw NAS1801-3-10 4 - 2 4 Washer NAS1149D0316K - 4 2

(b) Blanking of remaining holes Blank remaining holes let by removed screws item 3 (Refer to Figure 2) by installing all the parts listed in the following table.

INSTALLATION

Item Description Part Number Qty New Qty from Removal Figure

- Blanking cap ASNA2080B01 4 - -SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AI-7
© ATR. All rights reserved. Confidential and proprietary document. (c) Re-identification of modified overhead stowage compartments To ensure traceability, the modified part(s) listed in the table(s) below must be re-identified using indelible ink. The old P/N marking must be crossed out and remains legible. Part(s) listed in the table below must be re-identified in the area shown in the figure.

RE-IDENTIFICATION

Item Old Part Number Description New Part Number Figure

10 S2522928300200 LH overhead stowage compartment 26" S0041106800200 2

11 S2522928300200 RH overhead stowage compartment 26" S0041106800300 2

12 S2522926100200 LH overhead stowage compartment 93" S0041106801400 2

13 S2522926100200 RH overhead stowage compartment 93" S0041106801600 2

(d) Removal of fittings On LH and RH lateral rails, remove all the parts listed in the following table

REMOVAL

Item Description Part Number Qty Discarded Qty Re-used Figure

6 RH fitting S2522924620100 1 - 2 7 Screw NAS1801-3-8 2 - 2 8 Washer ASNA2397-10L 2 - 2 9 Nut ASNA2871-3 2 - 2SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148 Page AI-8
© ATR. All rights reserved. Confidential and proprietary document. D. TESTS

None.

E. CLOSE-UP (1) Valid for aircraft not equipped with the modification No. 06973 In zones 231 and 232, at level of LH and RH type III emergency exit doors:

- Close the four overhead stowage compartments as per

AMM (JIC) 25-24-21 OAC 10000.

- Close the light and ventilation outlet covers as per AMM (JIC) 25-23-22 RAI 10000. (2) Valid for aircraft equipped with the modification No. 06973 In zone 232, at level of RH type III emergency exit doors:

- Close the two overhead stowage compartments as per

AMM (JIC) 25-24-21 OAC 10000.

- Close the light and ventilation outlet covers as per AMM (JIC) 25-23-22 RAI 10000. (3) Re-energize the aircraft electrical network and disconnect the aircraft from ground as per AMM (JIC) 24-40-00 EAD 10000.SERVICE BULLETIN ATR72Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148Page IL-1©ATR. All rights reserved. Confidential and proprietary document.ILLUSTRATIONSIn zones 231 and 232, removal of hooks on overhead stowage compartments,and removal of fittings on lateral railsFigure 1, sheet 1 of 2SERVICE BULLETIN ATR72Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148Page IL-2©ATR. All rights reserved. Confidential and proprietary document.In zones 231 and 232, removal of hooks on overhead stowage compartments,and removal of fittings on lateral railsFigure 1, sheet 2SERVICE BULLETIN ATR72Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148Page IL-3©ATR. All rights reserved. Confidential and proprietary document.In zone 232, removal of hooks on overhead stowage compartments,and removal of fittings on lateral railFigure 2, sheet 1 of 2SERVICE BULLETIN ATR72Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1148Page IL-4©ATR. All rights reserved. Confidential and proprietary document.In zone 232, removal of hooks on overhead stowage compartments,and removal of fittings on lateral railFigure 2, sheet 2