165312-56-001

Original Issue: February 29, 2012 Page 1 of 7

Post Office Box 2200 Huntsville, Alabama 35804 USA Telephone: (256) 851-7001 Fax: (256) 859-8822

SERVICE BULLETIN

SUBJECT: Window - Sliding Cockpit Window – Rework gasket by addition of five (5) holes 

1. PLANNING INFORMATION

A. Effectivity:

Units Affected:

L/H and R/H Sliding Window P/N NP165312-11 and NP165312-12 basically 

equipped with gasket/retainer assembly ref 22-17-7640-1/-2

- Previous P/N ‘s up to NP165312-7 and NP165312-8 on which gasket/retainer 

assembly have been replaced by the current one ref 22-17-7640-1/-2 for wear 

reason.

B. Concurrent Requirements

Not applicable

C. Reason

(1) Problem

- Recently, during ferry flights between Toulouse and Hamburg, several PPG 

sliding windows were difficult to operate just after landing. After few minutes on

ground, PPG sliding windows could be normally opened. The suction of the 

window seal is at the origin of the problem. This problem had already been 

reported on some in-service aircraft with PPG windows equipped with 

gasket/retainer assembly ref 22-17-7640-1/-2

. This issue results now in some difficulties during AIRBUS aircraft deliveries. 

(2) Evidence

Investigation showed that a suction effect of the window seal is at the origin of the 

problem. 

(3) Substantiation

Adding five holes of 2mm diameter on gaskets bead have been in flight tested and 

solved this issue.

(4) Benefits

Accomplishment of this service bulletin will ensure that all PPG windows equipped 

with the latest version of seal /retainer assembly P/N ref 22-17-7640-1/-2 are 

modified according to the following procedure. 
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Original Issue: February 29, 2012 Page 2 of 7

D. Description

- This service bulletin instructs operators how to add five holes on seal

E. Compliance recommendation

- Application of this Service Bulletin is Mandatory.

- This service bulletin should be embodied at the aircraft’s next 100 days check 

after Airbus Inspection Service Bulletin issuance.

F. Approval

- The technical content of this document is approved under the authority of DOA 

No. EASA.21J.031.

G. Manpower

- This service bulletin will require two (2) persons a total of 20 Minutes to 

accomplish for a unit. 

H. Weight and Balance

- No change

I. Electrical Load Data

- Not Applicable

J. Software Accomplishment Summary

- Not Applicable

K. References

- PPG Drawing NP-165312, Revision AV

- EDES ref: SA#2-05 Issue 00

- PPG Abbreviated Component Maintenance Manual,

(ACMM) Part Number: 56-11-22 Revision 11.

- This Service Bulletin is subject to Aircraft Modification No. 153534 P13038 

(classified minor) and is covered by A/C Service Bulletin Number A320-56-

1015.

- Under no circumstances shall the modified equipment, resulting from the 

application of this SB, be installed on the aircraft type unless the corresponding 

modification, and if applicable, its aircraft SB are approved.
165312-56-001

Original Issue: February 29, 2012 Page 3 of 7

L. Other publication affected

- None

M. Interchangeability of parts

- Refer to aircraft Service Bulletin N° A320-56-1015

H. Tooling

2. MATERIAL INFORMATION

A. Material – Price and Availability

- Not Applicable

B. Industry Support Program

- The cost of incorporation of this Service Bulletin will be borne by the user.

C. Material necessary for each component 

The following parts are necessary to accomplish this Service Bulletin.

- 2mm dia. Leather Punch 

- Metallic ruler (10mm wide on 20 cm length )

- Black Permanent Marker (fine tip)

D. Spare Parts availability

- Not Applicable

E. Reintentified Parts

- Not Applicable

F. Tooling-Price and availability

- Not Applicable

G. Material Information 

- PPG Industries, Inc. 

1719 Highway 72 East

Huntsville, Alabama 35811

USA

Phone: (256) 851-7001
165312-56-001

Original Issue: February 29, 2012 Page 4 of 7

Facsimile: (256) 859-8822

3. ACCOMPLISHMENT INSTRUCTIONS

A. General

NOTE: Under no circumstances shall PPG Aerospace be held responsible for any 

damage, whether consequential or not, arising out of faulty workmanship, negligence 

or misuse by the User and/or Operators, on equipment modified under this Service

Bulletin.

B. Rework procedure recommendation for Units Installed on an Aircraft

(1) Provide access to the aft fixed window exterior surface through use of a sturdy 

ladder or other elevated platform. 

(2) Seal Rework Procedure

Note: this procedure has to be applied from the outside of the aircraft 

 Material needed: 

2mm dia. Punch 

Metallic ruler (10mm wide on 20 cm length)

Black Permanent Marker (fine tip)

 5 holes location (on each window): opposite the existing hole on the other side 

of the same bead.
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Original Issue: February 29, 2012 Page 5 of 7

(3) How to proceed?

On aircraft , open the sliding window in order to have access to the seal.
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Original Issue: February 29, 2012 Page 6 of 7

(4) Drill holes with the tool (2 mm Dia. Punch) 

Locations are easy to see: opposite the existing hole on the other side of the same 

bead.
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Original Issue: February 29, 2012 Page 7 of 7

C. Re-identification

- When done, mark the connector plate with a permanent black marker: 

M after the Serial Number 

S/N xxxxxHxxxx M 

D. Test

- Not Applicable

E. Family Tree chart

- Not Applicable