TITLE: FUSELAGE - FORWARD FUSELAGE EXTERNAL INSPECTIONS.

REVISION: 1 DATE: 18-MAY-2004

ACTION

Insert Revision 1 in front of Original Issue. Original Issue can

be removed upon issue of a supersedure Airworthiness Directive

replacing UKCAA AD 007-06-2003.

NOTE: Inspections carried out in accordance with original issue of

this Inspection Service Bulletin satisfy the requirements of

this issue of the Bulletin. Therefore, no additional

inspections required until next scheduled repeat inspection.

REASON

ISB.53-167:-

Page 1 - para.1.D:

Para. ’Operators are advised.....etc.’ added.

Op.(1) changed.

Page 2 - para.1.F:

Inspection 30 manhours, was 40.

Total manhours 32, was 42.

para.1.J:

Reference to ’Non Destructive Test Manual NTM 53-10-12’ - deleted.

Page 3:

Para.2.B.(2) - revised.

Para.2.B.(3) - deleted.

ISB.53-167ap2 (Appendix 2):- Re-written.

ISB.53-167ap3 (Appendix 3):- Deleted.

BAE SYSTEMS (Operations) Limited, Prestwick International Airport, Ayrshire,

KA9 2RW, Scotland.

INSPECTION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

TRANSMITTAL FOR INSPECTION SERVICE BULLETIN REVISION

SERVICE BULLETIN No.ISB.53-167

DATE: 27-JUN-2003

Date: 27-JUN-2003 REVISION TRANSMITTAL SHEET

ISB.53-167

Revision: 1 18-MAY-2004 Page 1 of 2

Printed in England
This Page Is Intentionally Left Blank.

INSPECTION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

TRANSMITTAL FOR INSPECTION SERVICE BULLETIN REVISION

SERVICE BULLETIN No.ISB.53-167

Date: 27-JUN-2003 REVISION TRANSMITTAL SHEET

ISB.53-167

Revision: 1 18-MAY-2004 Page 2 of 2

Printed in England
TITLE: FUSELAGE - FORWARD FUSELAGE EXTERNAL INSPECTIONS.

1.Planning information

A.Effectivity

(1) Aircraft

Aircraft affected by this inspection are defined below :-

All BAe 146 100, 200, 300 Series

All AVRO 146-RJ70, RJ85, RJ100 Series

B.Reason

Evidence of cracking has been reported along the edges of the

chemi-etched pockets in the front fuselage canopy skin panels

adjacent to the butt joint forward of frame 19.

C.Description

It is necessary to perform an external eddy current inspection to

locate cracks in accordance with Non Destructive Test Manual NTM

53-10-12 and Appendix No.2 of this Bulletin.

D.Compliance

Operators are advised that this Service Bulletin is the subject of

UK Civil Aviation Authority Airworthiness Directive consultation.

(1) For the BAe 146 aircraft, perform the external eddy current

inspections of the front fuselage skin panels detailed in

para.2.B using the inspection instructions detailed in

ISB.53-167ap2 Appendix 2 as follows:-

(a) Initially within 4,000 landings from initial issue of this

bulletin orat 16,000 landings total, whicheveris the

later.

(b) Repeat at intervals of 8,000 landings.

(2) For the AVRO-RJ aircraft, perform the external eddy current

inspections of the front fuselage skin panels detailed in

para.2.B using the inspection instructions detailed in

ISB.53-167ap2 Appendix 2 as follows:-

(a) Initially within 2,000 landings from initial issue of this

bulletin orat 10,000 landings total, whicheveris the

later.

BAE SYSTEMS (Operations) Limited, Prestwick International Airport, Ayrshire,

KA9 2RW, Scotland.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 1 of 12

Printed in England
(b) Repeat at intervals of 4,000 landings.

E.Approval

The technical information contained in this document has been

approved under the authority of JAA Design Organization Approval

No.CAA.JA.02034.

F.Manpower

Man-hours per aircraft

Preparation 2-00

Inspection 30-00

Total Man-hours 32-00

G.Materials - cost and availability

Not applicable.

H.Tooling - cost and availability

Not applicable.

I.Weight and balance

Not applicable.

J.References

Not applicable.

K.Publications affected

Not applicable.

L.Electrical load data

Not applicable.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 2 of 12

Printed in England
2.Accomplishment instructions

A.Preparation

(1) Observe appropriate safety precautions in the Aircraft

Maintenance Manual (AMM).

B.Inspection

(1) Perform an Eddy Current Inspection in accordance with logic

diagram Drawing No.1 for BAe 146 aircraft or logic diagram

Drawing No.2 for Avro 146-RJ aircraft in the areas detailed

in Drawing No.3.

(2) Referto Appendix 2 (ISB.53-167ap2) forInspection procedures

forNose Skin Panels and Canopy Roof Skins.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 3 of 12

Printed in England
LOGIC DIAGRAM - BAE 146 AIRCRAFT

DRAWING 1.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 4 of 12

Printed in England
LOGIC DIAGRAM - AVRO 146-RJ AIRCRAFT

DRAWING 2.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 5 of 12

Printed in England
AREAS FOR INSPECTION (SHADED)

DRAWING 3.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 6 of 12

Printed in England
C.Terminating action

(1) There is no Terminating Action at present.

D.Documentation

(1) Report findings, including nil defects, using attached

inspection report sheet to:-

CustomerLiaison,

CustomerSupport (Building 37),

BAE SYSTEMS (Operations) Limited,

Prestwick International Airport,

Ayr,

KA9 2RW,

Scotland.

FAX: +44 (0) 1292 675432

(2) Record the accomplishment of this Inspection in the

aircraft’s technical records.

E.Closing Action

Not applicable.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 7 of 12

Printed in England
This Page Is Intentionally Left Blank.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 8 of 12

Printed in England
3.Material information

Not applicable.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 9 of 12

Printed in England
This Page Is Intentionally Left Blank.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 10 of 12

Printed in England
APPENDIX 1

1.INSPECTION REPORT

A.Complete and return this form as detailed

OPERATOR:

AIRCRAFT REGISTRATION:

CONSTRUCTORS NUMBER:

FLIGHT HOURS:

LANDINGS:

DATE INSPECTION PERFORMED:

FINDINGS:

To: CustomerLiaison,

CustomerSupport (Building 37),

BAE SYSTEMS (Operations) Limited,

Prestwick International Airport,

Ayr,

KA9 2RW,

Scotland.

Fax + 44 (0) 1292 675432

e-mail raengliason@baesystems.com

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 11 of 12

Printed in England
This Page Is Intentionally Left Blank.

MODIFICATION SERVICE BULLETIN

BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

MOD. INSPECTION

Date: 27-JUN-2003 ISB.53-167

Revision: 1 18-MAY-2004 Page 12 of 12

Printed in England