# SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149
Page TS-1 of TS-2 

### TRANSMITTAL SHEET
Original issue

This page transmits Original issue of Service Bulletin No. ATR72-25-1149.
General information concerning this document is available in Service Letter No. ATR72-00-6005.



### TITLE : Equipment/Furnishings - Overhead stowage compartments - Removal of 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. ATR72-25-1149
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-5
MATERIAL INFORMATION.............................................................................. Page MI-1 to MI-2
ACCOMPLISHMENT INSTRUCTIONS ............................................................. Page AI-1 to AI-7
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. ATR72-25-1149

Page AR-1

© ATR. All rights reserved. Confidential and proprietary document.



### ACCOMPLISHMENT REPORT
SERVICE BULLETIN No. ATR72-25-1149 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. ATR72-25-1149

Page PI-1

© ATR. All rights reserved. Confidential and proprietary document. COMPLIANCE : RECOMMENDED MODIFICATION : 07294 L2461



### TITLE : Equipment/Furnishings - Overhead stowage compartments - Removal of 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) S251149

958, 960, 966, 967, 968, 969, 971, 972, 973, 985, 987, 988, 989, 991, 992, 993, 995, 996, 997, 998, 999, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1027, 1028, 1030, 1032, 1033, 1034, 1035, 1038, 1039, 1040, 1041, 1042, 1043, 1044, 1046, 1047, 1048, 1049, 1051, 1052, 1053, 1054, 1055, 1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063, 1064, 1065, 1066, 1067, 1068, 1069, 1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087, 1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098, 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109, A01SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page PI-2

© ATR. All rights reserved. Confidential and proprietary document. MSN (continued) Kit(s) S251149

1110, 1111, 1112, 1113, 1114, 1115, 1116, 1117, 1118, 1119, 1120, 1121, 1122, 1123, 1124, 1125, 1126, 1127, 1128, 1129, 1130, 1131, 1132, 1133, 1134, 1135, 1136, 1137, 1138, 1139, 1140, 1141, 1142, 1143, 1144, 1145, 1146, 1147, 1148, 1149, 1150, 1151, 1152, 1153, 1154, 1155, 1156, 1157, 1158, 1159, 1160, 1161, 1162, 1163, 1164, 1165, 1166, 1167, 1168, 1169, 1170, 1171, 1172, 1173, 1174, 1175, 1176, 1177, 1178, 1179, 1180, 1181, 1182, 1183, 1184, 1185, 1186, 1187, 1188, 1189,1190, 1191, 1192 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.

NOTE : This Service Bulletin is applicable on ly on aircraft equipped with 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.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page PI-3

© ATR. All rights reserved. Confidential and proprietary document. B. REASON
A case of interference/insufficient gap between a type III emergency exit door and the overhead stowage compartment hook 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 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
(2) In zone 232, removal of hooks on overhead stowage compartments

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.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page PI-4

© ATR. All rights reserved. Confidential and proprietary document. 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
(1) Valid for aircraft not equipped with the modification No. 06973
MEW : - 0.466 kg (- 1.027 lb)
Effect on balance : - 3.912 kg.m (- 339.543 lb.in)
(2) Valid for aircraft equipped with the modification No. 06973
MEW : - 0.233 kg (- 0.514 lb)
Effect on balance : - 1.956 kg.m (- 169.772 lb.in)

G. REFERENCES
The following publications have to be used during accomplishment of this Service Bulletin:
AMM (JIC) : 24-40-00 EAD 10000 25-24-21 OAC 10000
The following modifications and/or retrofit documents are mentioned on this Service Bulletin:

Modification Retrofit document Title

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 doorsSERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page PI-5

© ATR. All rights reserved. Confidential and proprietary document. H. AFFECTED PUBLICATIONS
(1) Maintenance documentation
The following maintenance manuals will be updated after receipt of the Accomplishment Report by ATR:

IPC : 25-24

(2) Operational documentation

None.SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

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. ATR72-25-1149

Page MI-2

© ATR. All rights reserved. Confidential and proprietary document. B. LIST OF COMPONENTS

Item Part Number Qty Description

Kit S251149A01

- ASNA2080B01 8 Blanking cap

Kit S251149A02

- 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. ATR72-25-1149

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 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.
(3) Valid for aircraft equipped with 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.

C. MODIFICATION
(1) In zones 231 and 232, removal of hooks on overhead stowage compartments
Valid for aircraft not equipped with modification No. 06973
(a) On overhead stowage compartments items 5, 6, 7 and 8, 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 - 1SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page AI-2

© ATR. All rights reserved. Confidential and proprietary document. REMOVAL (continued)

Item Description Part Number Qty Discarded Qty Re-used Figure

2 Hook S2522938520000 2 - 1

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

(b) Blanking of remaining holes
Blank remaining holes let by removed screws item 3 as per 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 - -SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page AI-3

© 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

5 S2522928300000 LH overhead stowage compartment 26" S0041106800000 1

or

5 S2522928300200 LH overhead stowage compartment 26" S0041106800200 1

or

5 S2522928300400 LH overhead stowage compartment 26" S0041106800400 1

or

5 S2522987600000 LH overhead stowage compartment 26" S2523022700000 1

or

5 S2522967200000 LH overhead stowage compartment 29" S0041106800600 1

or

5 S2522967200200 LH overhead stowage compartment 29" S0041106800800 1

or

5 S2522967200400 LH overhead stowage compartment 29" S0041106801000 1

or

5 S2522988200000 LH overhead stowage compartment 29" S2523022900000 1SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page AI-4

© ATR. All rights reserved. Confidential and proprietary document. RE-IDENTIFICATION (continued)

Item Old Part Number Description New Part Number Figure

6 S2522928300000 RH overhead stowage compartment 26" S0041106800100 1

or

6 S2522928300200 RH overhead stowage compartment 26" S0041106800300 1

or

6 S2522928300400 RH overhead stowage compartment 26" S0041106800500 1

or

6 S2522987600000 RH overhead stowage compartment 26" S2523022700100 1

or

6 S2522967200000 RH overhead stowage compartment 29" S0041106800700 1

or

6 S2522967200200 RH overhead stowage compartment 29" S0041106800900 1

or

6 S2522967200400 RH overhead stowage compartment 29" S0041106801100 1

or

6 S2522988200000 RH overhead stowage compartment 29" S2523022900100 1SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page AI-5

© ATR. All rights reserved. Confidential and proprietary document. RE-IDENTIFICATION (continued)

Item Old Part Number Description New Part Number Figure

7 S2522926100000 LH overhead stowage compartment 93" S0041106801200 1

or

7 S2522926100200 LH overhead stowage compartment 93" S0041106801400 1

or

7 S2522926100400 LH overhead stowage compartment 93" S0041106801600 1

or

7 S2522988000000 LH overhead stowage compartment 93" S2523022800000 1

8 S2522926100000 RH overhead stowage compartment 93" S0041106801300 1

or

8 S2522926100200 RH overhead stowage compartment 93" S0041106801500 1

or

8 S2522926100400 RH overhead stowage compartment 93" S0041106801700 1

or

8 S2522988000000 RH overhead stowage compartment 93" S2523022800100 1SERVICE BULLETIN ATR72

Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149

Page AI-6

© ATR. All rights reserved. Confidential and proprietary document. (2) In zone 232, removal of hooks on overhead stowage compartments
Valid for aircraft equipped with modification No. 06973
(a) On overhead stowage compartments items 6 and 8, 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 as per 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. ATR72-25-1149

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

5 S2522928300200 LH overhead stowage compartment 26" S0041106800200 2

6 S2522928300200 RH overhead stowage compartment 26" S0041106800300 2

7 S2522926100200 LH overhead stowage compartment 93" S0041106801400 2

8 S2522926100200 RH overhead stowage compartment 93" S0041106801600 2

D. TESTS

None.

E. CLOSE-UP
(1) Valid for aircraft not equipped with 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.
(2) Valid for aircraft equipped with 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.
(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. ATR72-25-1149Page IL-1©ATR. All rights reserved. Confidential and proprietary document.ILLUSTRATIONSIn zones 231 and 232, removal of hookson overhead stowage compartmentsFigure 1, sheet 1 of 2SERVICE BULLETIN ATR72Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149Page IL-2©ATR. All rights reserved. Confidential and proprietary document.In zones 231 and 232, removal of hookson overhead stowage compartmentsFigure 1, sheet 2SERVICE BULLETIN ATR72Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149Page IL-3©ATR. All rights reserved. Confidential and proprietary document.In zone 232, removal of hookson overhead stowage compartmentsFigure 2, sheet 1 of 2SERVICE BULLETIN ATR72Original issue - Nov 21/14 Service Bulletin No. ATR72-25-1149Page IL-4©ATR. All rights reserved. Confidential and proprietary document.In zone 232, removal of hookson overhead stowage compartmentsFigure 2, sheet 2