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BAE SYSTEMS (Operations) Limited/opy, Scotland. Prestwick International Airport, Ayrshire,
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
TRANSMITTAL FOR INSPECTION SERVICE BULLETIN REVISION SERVICE BULLETIN No.ISB.53-229 DATE: 08-JUL-2010 TITLE: TO INSPECT FOR CRACKING IN STIFFENERS ADJACENT TO THE NLG
RETRACTION JACK ATTACHMENT BOSS AT THE LEFT SIDEWALL OF THE NOSE LANDING GEAR BAY.
REVISION: 1 DATE: 22-NOV-2010 ACTION :
FOR THOSE OPERATORS WHO HAVE PREVIOUSLY RECEIVED THIS BULLETIN:-
(1) Remove and destroy Inspection Service Bulletin complete at Initial Issue.
(2) Insert Inspection Service Bulletin complete at Revision No.1.
OVERVIEW OF CHANGE:
The Service Bulletin is revised to clarify the area to be inspected
INCORPORATION OF THIS REVISION DOES NOT REQUIRE REWORK OF THE
INSPECTION CONDUCTED IN ACCORDANCE WITH EARLIER REVISIONS OF THIS INSPECTION SERVICE BULLETIN.
DETAILS OF CHANGE:
Service Bulletin title is changed for clarification.
The following paragraphs are revised for clarification of area to be inspected.
Para 1.B.
Para. 1.C(1) (a) Para. 2.C.
Drawing 1.
Date: 08-JUL-2010 REVISION TRANSMITTAL SHEET ISB. 53-229 Revision: 1 22-NOV-2010 Page 1 of 2 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
TRANSMITTAL FOR INSPECTION SERVICE BULLETIN REVISION SERVICE BULLETIN No.ISB.53-229 This Page Is Intentionally Left Blank.
Date: 08-JUL-2010 REVISION TRANSMITTAL SHEET ISB. 53-229 Revision: 1 22-NOV-2010 Page 2 of 2 Printed in England
BAE SYSTEMS (Operations) Limited, Prestwick International Airport, Ayrshire, KA9 2RW, Scotland.
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT TITLE: TO INSPECT FOR CRACKING IN STIFFENERS ADJACENT TO THE NLG
RETRACTION JACK ATTACHMENT BOSS AT THE LEFT SIDEWALL OF THE NOSE LANDING GEAR BAY.
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 This inspection service bulletin is only applicable to aircraft Pre modification HCM01672D.
(2) Spares Inspect any spare nose landing gear bay left sidewalls.
B. Reason Evidence of cracking has been found on in-service aircraft on the nose landing gear bay left sidewall at the radius between the sidewall boss and the stiffeners which has led to replacement of the sidewall.
C.Description
(1) It is necessary to perform the following Inspection:
(a) Non Destructive Inspection of the stiffeners on the nose landing gear bay left sidewall adjacent to the boss at the NG retraction jack attachment pin hole.
(2) Rectification actions, actions are described th parting requirements and Closing D.Compliance The technical content of this service bulletin is the subject of EASA AIRWORTHINESS DIRECTIVE consultation.
(1) The inspection is to be in accordance with para.2.C the inspection periods are :-
(a) For aircraft which have completed more than 12,000 flights, Date: 08-JUL-2010 ISB.53-229 Revision: 1 22-NOV-2010 Page 1 of 12 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT inspect within 4,000 flights.
(b) For aircraft which have completed less than 12,000 flights, the inspection must be carried out before achieving 12,000 flights or within 4,000 flights, whichever is later.
(2) Until a closing action is carried out subsequent inspections of the stiffeners must be be accomplished every 12,000 flights thereafter.
(3) If the closing action in para.2.G.(1) is embodied, inspection of the stiffeners adjacent to the retraction jack attachment boss is not due before the airframe life limit as defined in AMM 05-10-01. Thereafter, refer to SSID.
E. Approval The technical information contained in this document has been approved under the authority of EASA Part 21 Approval No.
EASA.21J.047.
F-Manpower To inspect as defined in para.2.C 2 man-hours.
This man-hour estimate does not include time for gaining access to, or cleaning, the inspection area.
G.Materials-Cost/Availability Not applicable.
H.Tooling-Cost/Availability By arrangement between BAE SYSTEMS and the operator.
I.Weight and balance Not applicable.
J. References
(1) Aircraft Maintenance Manual, AMM Chapter 32-20-14, page block
201.
2) Nondestructive Testing Manual (NTM), PART 6 - Eddy Current, NTM 20-00-00 and NTM 53-10-15 Part C.
(3) Structural Repair Manual, SRM 51-20-11 .
Date: 08-JUL-2010 ISB.53-229 Revision: 1 22-NOV-2010 Page 2 of 12 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT K.Publications Affected None L.Electrical load data Not applicable.
Revision: 122-NOV-2010 ISB.53-229 Page 3 of 12 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT This Page Is Intentionally Left Blank.
Date: 08-JUL-2010 SB.55-22 Revision: 1 22-NOV-2010 age 4 of 1 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
2.ACCOMPLISHMENT INSTRUCTIONS NOTE: Before dismantling any items note wirelocking and split pin installation details.
A. General
(1) The following abbreviations are used within this document :- AMM - Aircraft Maintenance Manual
(2) Observe all WARNINGS and CAUTIONS appearing in the Aircraft Maintenance Manual (AMM) referred to in this Service Bulletin.
B.Preparation
(1) Observe appropriate safety precautions in AMM.
(2) Disconnect nose gear undercarriage doors (Ref. AMM 32-20-14 page block 201 ). Gain access to NLG undercarriage bay.
(3) Clean area to be inspected, including any extruded sealant.
(4) Do a detailed visual inspection of the inspection area for any visible damage.
(5) Equipment and Material Ref. NTM Part 6, 53-10-15 Part C .
C. Non Destructive Inspection of the stiffeners on the nose landing gear bay left sidewall adjacent to the boss at the NLG Retraction Jack attachment Pin Hole
(1) Do a surface high frequency eddy current inspection in accordance with NTM Part 6, 53-10-15 Part C, (Ref. Drawing D.Rectification
(1) Closing action is to be the inspection para.2.C
(a) Rectify any defects found before further flight, to an approved BAE SYSTEMS repair scheme.
(b) If no cracks are evident in the stiffeners, closing action considered. Continued operation is allowed if subsequent inspections are conducted in accordance with Date: 08-JUL-2010 ISB.53-229 Revision: 1 22-NOV-2010 Page 5 of 12 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
(c) Protect any bare and re-worked material (Ref. SRM 51-20-11 E.Close up
(1) Re-connect nose gear undercarriage doors (Ref. AMM 32-20-14
(2) Close undercarriage doors.
(3) Make certain work area is clean, and clear of tools and miscellaneous equipment.
F.Reporting
(1) Record the accomplishment of this inspection in the aircraft's technical records.
(2) Report all findings of this Service Bulletin, and the embodiment of all modifications using attached Inspection Report Sheet.
G.Closing action
(1) The closing action consists of replacing existing sidewall with post MOD HCM01672D sidewall (Part number HC537L0002-006).
Date: 08-JUL-2010 ISB.53-229 Revision: 1 22-NOV-2010 Page 6 of 12 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT 1000
PART 'C' TYPICAL SCAN PATH
AROUND THE EDGES OF
THE STIFFENER RIBS MAXIMUM 0.1in (2.54mm) FROM A FREE EDGE.
AREA TO BE
• INSPECTED
AREA TO BE
INSPECTED
RETRACTION JACK AND
PIN OMITTED FOR
CLARITY N5322901
NOSE UNDERCARRIAGE SIDEWALL DRAWING 1.
Date: 08-JUL-2010 ISB.53-229 Revision: 1 22-NOV-2010 Page 7 of 12 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT This Page Is Intentionally Left Blank.
Date: 08-JUL-2010 Revision: 1 22-NOV-2010 age 8011 53-221 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
3.Material information Not applicable.
Revision: 1-2-N0V-2010 SB. 53-27 Printed in England
BAE SYSTEMS
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT This Page Is Intentionally Left Blank.
Date: 08-JUL-2010 ISB.53-229 Revision: 1 22-NOV-2010 Page 10 of 12 Printed in England