SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 Page TS-1 of TS-2 

TRANSMITTAL SHEET

Original issue 

This page transmits Original issue of Service Bulletin No. ATR42-25-0186. 

General information concerning this document is available in Service Letter No. ATR42-00-5005. 

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 aircraft 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 ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

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-3 

ILLUSTRATIONS................................................................................................ Page IL-1 to IL-2 

2 – REVISION SEQUENCES 

Issue or Revision Date Additional work 

 

Original issue Nov 21/14 - 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 Page AR-1 © ATR. All rights reserved. Confidential and proprietary document. 

ACCOMPLISHMENT REPORT 

SERVICE BULLETIN No. ATR42-25-0186 

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 ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

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 ATR42 models: 

ATR42-200 ATR42-300 ATR42-320 ATR42-400 ATR42-500 

NO NO NO NO YES 

(2) Aircraft 

MSN Kit(s) S250186 

859, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 

1008, 1009, 1010, 1011, 1012, 1013, 1014, 

1015 

A01 

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 1: This Service Bulletin is applicable only on aircraft equipped with modification 

No. 07152 or Service Bulletin No. ATR42-25-0180 or on the following 

aircraft on which the removal of the fittings has been performed through 

concessions: 

- MSN 1002, concession No. TR-004399299, 

- MSN 1005, concession No. TR-004399338. 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

Page PI-2 © ATR. All rights reserved. Confidential and proprietary document. 

NOTE 2: The change covered in this Service Bulletin has been embodied on 

production aircraft on MSN 1016 and subsequent. 

(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 has been detected. 

In order to secure 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 

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 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

Page PI-3 © ATR. All rights reserved. Confidential and proprietary document. 

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

MEW : - 0.466 kg (- 1.027 lb) 

Effect on balance: - 3.912 kg.m (- 339.543 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 

 

07152 ATR42-25-0180 

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 : 25-24 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

Page PI-4 © ATR. All rights reserved. Confidential and proprietary document. 

(2) Operational documentation 

None. 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 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 36th 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 ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 Page MI-2 © ATR. All rights reserved. Confidential and proprietary document. 

B. LIST OF COMPONENTS

Item Part Number Qty Description 

 

 Kit S250186A01 

 

- ASNA2080B01 8 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 ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 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) 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. 

C. MODIFICATION

(1) In zones 231 and 232, removal of hooks on overhead stowage compartments 

(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 S2522930720100 2 - 1 

2 Hook S2522930720000 2 - 1 

3 Screw NAS1801-3-10 8 - 1 

4 Washer NAS1149D0316K 8 - 1 

 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 Page AI-2 © 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

 

5 S2522928300200 LH overhead stowage 

compartment 26" S0041106800200 1 

or 

5 S2522987600000 LH overhead stowage 

compartment 26" S2523022700000 1 

 

6 S2522928300200 RH overhead stowage 

compartment 26" S0041106800300 1 

or 

6 S2522987600000 RH overhead stowage 

compartment 26" S2523022700100 1 

 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 Page AI-3 © ATR. All rights reserved. Confidential and proprietary document. 

 RE-IDENTIFICATION 

(continued) 

 

Item Old Part Number Description New Part Number Figure

 

7 S2522926100200 LH overhead stowage 

compartment 93" S0041106801400 1 

or 

7 S2522988000000 LH overhead stowage 

compartment 93" S2523022800000 1 

 

8 S2522926100200 RH overhead stowage 

compartment 93" S0041106801500 1 

or 

8 S2522988000000 RH overhead stowage 

compartment 93" S2523022800100 1 

 

D. TESTS

None. 

E. CLOSE-UP

(1) 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) Re-energize the aircraft electrical network and disconnect the aircraft from ground as 

per AMM (JIC) 24-40-00 EAD 10000. 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 Page IL-1 

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

ILLUSTRATIONS 

In zones 231 and 232, removal of hooks 

on overhead stowage compartments 

Figure 1, sheet 1 of 2 
SERVICE BULLETIN ATR42 

Original issue - Nov 21/14 Service Bulletin No. ATR42-25-0186 

 Page IL-2 

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

In zones 231 and 232, removal of hooks 

on overhead stowage compartments 

Figure 1, sheet 2