# BAE Systems Service Bulletin J41-26-008: U.S. DOT/FAA - Service Information

- Rights: © BAE Systems. Filed by the FAA in regulations.gov docket FAA-2012-0489; AD 2012-17-11 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [BAE Systems Service Bulletin J41-26-008](https://openairdocs.org/service-documents/bae-systems/j41-26-008.md)
- Title as filed: U.S. DOT/FAA - Service Information
- Pages: 18
- PDF: https://openairdocs.org/files/sha256/a7/bf/a7bf44c124fce9e5f90eee806ddac054f13d17027fa9f7cfbe85886e36b37377
- Page: https://openairdocs.org/service-documents/bae-systems/j41-26-008/file/a7bf44c124fc

## Text

This text is OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
BAE SYSTEMS,
PRESTWICK INTERNATIONAL AIRPORT,
AYRSHIRE, KA9 2RW,
SCOTLAND.
J41-26-008
TRANSMITTAL SHEET
This page transmits revision number 2 of service bulletin J41-26-008, pages 1 through 14.
TITLE: FIRE PROTECTION - RE-ORIENTATION OF FIRE EXTINGUISHER IN THE TOILET
VANITY UNIT AND INTRODUCTION OF REPLACEMENT UNIT
KIT NUMBER JK43496A
REASON FOR REVISION
Minor Editorial Changes
DETAIL OF CHANGES
Para 2.A. (1) - Revised Editorially
Address Change
This revision has no effect on aircraft on which the bulletin was accomplished at a previous issue.
INSTRUCTIONS FOR INCORPORATION
Remove pages 1 through 14.
Add new pages 1 through 14.
Remove pages complete at Revision No 1.
Add new pages complete at Revision No 2.
J41-26-008
ORIGINAL ISSUE: 20th Sept 2011  PAGE 1 OF 1
AE SYSTEMS (Operations) Limitec
Printed in the U.K

### Page 2

(No text on this page.)

### Page 3 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
BAE SYSTEMS,
PRESTWICK INTERNATIONAL AIRPORT,
AYRSHIRE, KA9 2RW,
SCOTLAND.
J41-26-008
TITLE: FIRE PROTECTION - RE-ORIENTATION OF FIRE EXTINGUISHER IN THE TOILET
VANITY UNIT AND INTRODUCTION OF REPLACEMENT UNIT
KIT NUMBER JK43496A
1.  PLANNING INFORMATION
A.  Effectivity
All Jetstream Series 4100 aircraft.
Note:  Refer to the table in paragraph (2) accomplishment (A) preparation for your
particular aircraft serial number and status.
B. Reason
This service bulletin removes the spherical fire extinguisher bottle installed in some
Jetstream 41 aircraft toilet vanity units. These extinguishers are now obsolete. A
replacement miniature fire extinguisher bottle has been identified that will fit into the
toilet vanity unit.
On some Jetstream Series 4100 aircraft, this same miniature fire extinguisher bottle
was mounted in the horizontal position at build. In the event of a fire in the vanity waste
unit, the extinguishant may not fully discharge from the fire extinguisher bottle. Aircraft
with this installation require that the fire extinguisher bottle be relocated to the vertical
position.
C.  Description
This service bulletin is in two parts.
Part 1, for aircraft with fire bottle Pt No BA22650-1. Replace this now obsolete spherical
extinguisher bottle.
Part 2, for aircraft with fire bottle Pt No BA20509AM-4. Reposition this existing bottle
from the current horizontally mounted position to a vertically mounted position.
The tasks for part 1 are as follows:
- The toilet vanity unit is removed.
- The existing spherical fire extinguisher bottle is removed.
- A new fire extinguisher is installed.
- The toilet vanity unit is reinstalled.
- The aircraft records are amended.
ORIGINAL ISSUE: 5th October 2010  J41-26-008
REVISION No 2: 20th Sept 2011  PAGE 1 of 14
BAE SYSTEMS (Operations) Limited.
Printed in the U.K.

### Page 4 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
The tasks for part 2 are as follows:
- The toilet vanity unit is removed.
- The fire extinguisher bottle is repositioned from a horizontal plane to a vertical plane.
- The toilet vanity unit is reinstalled.
- The aircraft records are amended.
D.  Manpower
Part 1
8 man-hours.
Part 2
8 man-hours.
Mechanical skills are necessary.
Material - Cost and Availability
The Modifications Group, BAE SYSTEMS, Regional Aircraft, Prestwick International
Airport, Ayrshire, KA9 2RW, SCOTLAND, will give you terms and conditions for the
supply of material.
F.  Tooling - Price and Availability
None.
G.  Weight and Balance
Part 1
Weight: -1.4 lb.  (-0.6 kg.)
Moment: 700 lb.in.  (8065 kgmm.)
Part 2
None
H.  Aircraft Noise Levels
Aircraft noise is not affected.
Electrical Load Data
Not affected.
J.  Software Accomplishment Summary
Not applicable.
J41-26-008  ORIGINAL ISSUE: 5th October 2010
PAGE 2  Printed in the U.K.  REVISION No 2: 20th Sept 2011

### Page 5 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
K.  References
- Aircraft Maintenance Manual, Chapter, 26-28-05 .
- Aircraft Illustrated Parts Catalogue 26-20-00-15A and 26-20-00-15B.
- Structural Repair Manual, Chapter 51-70-04.
Publications Affected
- Aircraft Illustrated Parts Catalog.
- Aircraft Maintenance Manual.
NOTE: The maintenance review board report and maintenance planning document will
be reviewed, for possible inclusion of a scheduled maintenance task.
Operators are requested to advise The Project Manager, Technical Publications, BAE
SYSTEMS, Regional Aircraft, Prestwick International Airport, Ayrshire, KA9 2RW,
SCOTLAND, of the accomplishment of this service bulletin and request the necessary
revisions for the affected manuals.
M.  Family Tree Of Modification Relationships
Not applicable.
N.  Approval
The technical content of Part 2 of this service bulletin is the subject of EASA
Airworthiness Directive consultation.
Part 2 of this service bulletin must be embodied no later than 30" June 2011.
The technical content of this service bulletin is approved under the authority of EASA
PART 21 Approval No. EASA.21J.047.
Signed
Date  - 21/9//1
EASA Part 21 Approval No. EASA.21J.047.
ORIGINAL ISSUE: 5th October 2010  J41-26-008
REVISION No 2: 20th Sept 2011  PAGE 3
Printed in the U.K.

### Page 6 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
BLANK PAGE
J41-26-008  ORIGINAL ISSUE: 5hh October 2010
PAGE 4  REVISION No 2: 20th Sept 2011
Printed in the U.K.

### Page 7 (OCR)

BAe JETSTREAM
Series 410
SERVICE BULLETIN
BLANK PAGE
J41-26-008  ORREVISION N° 2510r Sept 2011
PAGE 4
Printed in the U.K.

### Page 8 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
2.  ACCOMPLISHMENT INSTRUCTIONS
WARNING: MAKE SURE THE AIRCRAFT AND THE AIRCRAFT SYSTEMS ARE MADE
SAFE AS DETAILED IN THE APPLICABLE CHAPTERS OF THE AIRCRAFT
MAINTENANCE MANUAL.
CAUTION: TAKE CARE NOT TO DAMAGE STRUCTURE WHEN MATERIAL IS CUT OR
DRILLED. REMOVE ALL UNWANTED MATERIAL FROM THE WORK AREA.
NOTE: Abbreviations used in the accomplishment instructions of this service bulletin
AMM - Aircraft Maintenance Manual.
IPC - Illustrated Parts Catalogue.
SRM - Structural Repair Manual.
A.  Preparation
(1)  Before starting any work on the aircraft refer to the following table and IPC for your
correct effectivity and part number of fire extinguisher bottle. Refer to your AMM for
removal of the toilet vanity unit to carry out the work required.
Tail No  Extinguisher  IPC  IPC Ref  AMM Ref  Description
Effectivity  Bottle Part  /AMM
No  Suite
41005, 006,  BA20509AL  401  26-20-00-15  26-28-05  No action required.
007, 008,
009, 010,
011.
41014, 018,  BA20509AM-4  401  26-20-00-15A  26-28-05  Bottle type -
024, 032,  horizontally mounted
039, 040,  refer to part 2.
070, 071,
074, 087,
096.
41047  BA20509AM-4  402  26-20-00-15A  26-28-05  Bottle type -
horizontally mounted
refer to part 2.
41012, 013,  403  26-20-00-15A  26-28-05  Bottle type -
015, 017,  horizontally mounted
refer to part 2.
620 920
031, 033,
041, 043,
045, 055,
058, 059,
063, 064,
080, 083
ORIGINAL ISSUE: 5th October 2010  J41-26-008
REVISION No 2: 20th Sept 2011  PAGE 5
Printed in the U.K.

### Page 9 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
Tail No  Extinguisher  IPC  IPC Ref  AMM Ref  Description
Effectivity  Bottle Part  JAMM
No  Suite
41097, 098,  BA22650-1  403  26-20-00-15B  26-28-05  Bottle type - Spherical
099, 100,  now obsolete refer to
101  part 1.
41030  BA20509AM-4  406  26-20-00-15A  26-28-05  Bottle type -
horizontally mounted
refer to part 2.
41057, 066,  BA20509AM-4  408  26-20-00-15A  26-28-05  Bottle type -
067, 072,  horizontally mounted
073, 075,  refer to part 2.
076, 077,
078, 079,
081, 082,
084, 085,
086, 088,
089, 090,
091, 092,
093
41046, 049,  BA20509AM-4  409  26-20-00-15A  26-28-05  Bottle type -
052, 053,  056  refer to part 2.  horizontally mounted
41034, 035,  BA20509AM-4  410  26-20-00-15A  26-28-05  Bottle type -
036, 037,  horizontally mounted
044, 048,  refer to part 2.
050, 051,
054, 061,
062, 065,
068, 069,
095, 103
41060, 094  BA20509AM-4  411  26-20-00-15A  26-28-05  Bottle type -
horizontally mounted
refer to part 2.
41038  BA20509AM-4  412  26-20-00-15A  26-28-05  Bottle type -
horizontally mounted
refer to part 2.
41102, 104  BA22650-1  414  26-20-00-15B  26-28-05  Bottle type - Spherical
now obsolete refer to
part 1.
J41-26-008  ORIGINAL ISSUE: 5th October 2010
PAGE 6  REVISION No 2: 20th Sept 2011
Printed in the U.K.

### Page 10 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
Part 1 - Accomplishment - Replace the existing obsolete spherical fire extinguisher
bottle part number BA22650-1. Use material kit number J41-26-008 (refer to paragraph
(1) Refer to AMM remove the toilet vanity unit.
(2) Remove the existing spherical fire extinguisher bottle part number BA22650-1,
mounting bracket and attachment clips.
(3) Remove and retain the existing grommet on the waste chute.
(4) Refer to Figures 1 and 2. Carry out the following:-
(a) Mark out positions for inserts using the dimensions as shown.
(D)  Refer to SRM 51-70-04. Install inserts part number SL601-3-3A (Qty 6) at the
marked out positions.
(c)  Install fire extinguisher mounting bracket part number BA20720-1 (Qty 1) to the
toilet vanity unit with attachment screws part number NAS8103-6 (Qty 4) and
washers part number SP126D (Qty 4).
(5)  Temporarily install the new fire extinguisher bottle part number BA20509AM-4 (Qty
1) to the extinguisher mounting bracket.
(6)  Refer to Figure 2. Form the copper outlet pipe using the dimensions on the figure as
follows:-
(a)  Make sure there are no kinks in the pipe before bending the copper outlet pipe
(b) Bend and form the copper outlet pipe round a suitable mandrel to avoid kinking
the pipe to the dimensions and angles as shown on figure.
Note:- Do not bend the copper outlet pipe within 1.Oin of extinguisher head which is
shown by the yellow band. Take extreme care when bending the copper
outlet pipe as it is pressurised.
Note:- Minimum bend radius is to be 0.75in.
Note:- Make sure there is a minimum clearance of 0.1 in between the copper outlet
pipe and existing structure.
(7)  Refer to Figures 1 and 2. Reinstall the retained grommet on to the waste chute.
(8)  Install cable tie mount part number CB9120V5 (Qty 1) inside the waste chute using
the dimensions as shown.
(9)  Clean area of waste chute where cable tie mount is to be positioned. Bond the cable
tie mount to the waste shute with adhesive part number CB200.
ORIGINAL ISSUE: 5th October 2010  J41-26-008
REVISION No 2: 20th Sept 2011  PAGE 7
Printed in the U.K.

### Page 11 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
(10) Refer to Figures 1 and 2. Install the copper outlet pipe to the toilet vanity unit with
attaching p clips part number PKS1007-03 (Qty 2) screws part number NAS8103-6
(Qty 2) and washers part number SP 126D (Qty 2).
(11) At the cable tie mount inside the waste chute add tape to the copper outlet pipe to
prevent fretting and secure the pipe to the mount with cable tie part number LKOB
(Qty 1).
(12) Make sure extinguisher is secure within mounting bracket and the gauge is showing
full in green sector of the pressure indicator and detector. Make sure the discharge
nozzle is correctly sited and free of contaminants.
(13) Refer to AMM reinstall the toilet vanity unit.
C.  Part 2 - Accomplishment - Reposition the existing fire extinguisher bottle part number
BA20509AM-4 from a horizontal plane to a vertical position. Use material kit number
J41-26-008 (refer to paragraph 3A).
(1)  Refer to AMM remove the toilet vanity unit.
(2)  Remove and retain the existing fire extinguisher bottle part number BA20509AM-4
from the horizontal plane, attachment bracket and attachment clips.
(3) Remove and retain existing grommet on the waste chute.
(4) Refer to Figure 1 and 2. Carry out the following:-
(a) Mark out positions for inserts using the dimensions as shown.
(D)  Refer to SRM 51-70-04. Install inserts part number SL601-3-3A (Qty 6) at the
marked out positions.
Install fire extinguisher mounting bracket part number BA20720-1 (Qty 1) to the
toilet vanity unit with attachment screws part number NAS8103-6 (Qty 4) and
washers part number SP 126D (Qty 4).
(5) Temporarily install the retained fire extinguisher bottle part number BA20509AM-4 to
the extinguisher mounting bracket.
(б)  Refer to Figure 2. Reform the copper outlet pipe using the dimensions on the figure
as follows:-
(a)  Make sure there are no kinks in the pipe before bending the copper outlet pipe.
Refer to Figure 2. Bend and form the copper outlet pipe round a suitable
mandrel to avoid kinking the pipe to the dimensions and angles as shown on
figure.
Do not bend the copper outlet pipe within 1.0in of extinguisher head which is
shown by the yellow band. Take extreme care when bending the copper
outlet pipe as it is pressurised.
J41-26-008  ORIGINAL ISSUE: 5th October 2010
PAGE 8  REVISION No 2: 20th Sept 2011
Printed in the U.K.

### Page 12 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
Note:-  Minimum bend radius is to be 0.75in.
Note:- Make sure there is a minimum clearance of 0.1in between the copper outlet
pipe and existing structure.
Refer to Figure 1 and 2. Reinstall the retained grommet on to the waste chute.
(8)  Install cable tie mount part number CB9120V5 (Qty 1) inside the waste chute using
the dimensions as shown.
(9)  Clean area of waste chute where cable tie mount is to be positioned. Bond the cable
tie mount to the waste shute with adhesive part number CB200.
(10) Refer to Figure 1 and 2. Install the copper outlet pipe to the toilet vanity unit with
attaching p clips part number PKS1007-03 (Qty 2) screws part number NAS8103-6
(Qty 2) and washers part number SP126D (Qty 2).
(11) At the cable tie mount inside the waste chute add tape to the copper outlet pipe to
prevent fretting and secure the pipe to the mount with cable tie part number LKOB
(12) Make sure extinguisher is secure within mounting bracket and the gauge is showing
full in green sector of the pressure indicator and detector. Make sure the discharge
nozzle is correctly sited and free of contaminants.
(13) Refer to AMM reinstall the toilet vanity unit.
D.  Recovery
(1) Aircraft records:
(a) Add service bulletin number 'J41-26-008 Part 1' to the aircraft records.
(b) Add service bulletin number 'J41-26-008 Part 2' to the aircraft records.
(c) Add kit number 'JK43496A' to the aircraft records.
Operators are reminded of the necessity to inform The Project Manager,
TECHNICAL PUBLICATIONS, BAE SYSTEMS, Regional Aircraft, Prestwick
International Airport, Ayrshire, KA9 2RW, SCOTLAND, of the accomplishment of this
service bulletin in order to obtain the necessary revisions for the affected manuals,
see paragraph 1.L. Publications Affected, of this bulletin.
NOTE:  Operators are also reminded that it is their responsibility to amend the aircraft
weighing report, if necessary, in accordance with the weight and balance changes
given at paragraph 1.G. of this service bulletin.
ORIGINAL ISSUE: 5th October 2010  REVISION No 2: 20th Sept 2011  J41-26-008  PAGE 9
Printed in the U.K.

### Page 13 (OCR)

SAe JETSTREAM
Series 4100
SERVICE BULLETIN
29,005000 00  USE EXISTING
GROMMET
ZONE 260
INSERT
SL601-3-3A
FW D
P-CLIP
PKS1007-03
WASHER
SP 126D
BOLT
NAS8103-6
FIRE EXTINGUISHER
BOTTLE
BA20509AM-4
INSERT
SL601-3-3A
(4 POSITIONS)
MOUNTING
BRACKET
WASHER  BA20720-1
SP126D
BOLT  (4 POSITIONS)
NAS8103-6
26-20-10006
(4 POSITIONS)
INSTALLATION OF FIRE EXTINGUISHER IN THE TOILET VANITY UNIT
FIGURE 1
J41-26-008  ORIGINAL ISSUE: 5th October 2010
PAGE 10  REVISION No 2: 20th Sept 2011
Printed in the U.K.

### Page 14 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
0.5in (12.7mm)
(REF)  CABLE TIE MOUNT
CB9120V5
CABLE TIE
LKOB
1.75in (44.45mm)  ADHESIVE  CB200
NOZZLE
(REF)
1.75in (44.45mm)
- 0.25in
4.1in  (6.35mm)
(104.14mm)  0.75in (19.05mm) RAD  4th BEND
2.0in
(50.8mm)
5.8in
(147.32mm)
0.43in
(10.9mm)
0.9in
-- (22.86mm)
0.87 in
(22.09 mm)
1.0in
(25.4mm)
FELLOW BAND INDICATE:  1st BEND
NO BEND IN THIS AREA  0.75in (19.05mm) RAD
0.25in
(6.35mm)
1.87in
12.5 DEG  (47.5mm)
42.3 DEG
3rd BEND
0.75in (19.05mm) RAD
2nd BEND
- 0.75in (19.05mm) RAD
3.0in  26-20-10007
(76.2mm)
INSTALLATION OF FIRE EXTINGUISHER IN THE TOILET VANITY UNIT
FIGURE 2
ORIGINAL ISSUE: 5th October 2010  J41-26-008
REVISION No 2: 20th Sept 2011  PAGE 11
Printed in the U.K.

### Page 15 (OCR)

BAe JETSTREAM
Series 4100
SERVICE BULLETIN
3.  MATERIAL INFORMATION
NOTE: The new part numbers shown in paragraph 3.A. are necessary to accomplish this
service bulletin on one aircraft. Use the material kit number shown to order the
parts.
New parts supplied as a material kit - order kit number 'J41-26-008 Pt 1'.
New Part No.  QTY  Keyword
BA20509AM-4  1  Fire Extinguisher
BA20720-1  1  Mounting Bracket
CB9120V5  Cable Tie Mount
LKOB  Cable Tie
Alternative
S1202-002
NAS8103-6  6  Screw
PKS1007-03  2  P-clip
Alternative
TA027000DC03HA
SL601-3-3A  Insert
SP 126D  washer
B.  New parts supplied as a material kit - order kit number 'J41-26-008 Pt 2'.
New Part No.  QTY  Keyword
CB9120V5  1  Cable Tie Mount
LKOB  1  Cable Tie
Alternative
S1202-002
NAS8103-6  6  Screw
PKS1007-03  2  P-clip
Alternative
TA027000DC03HA
SL601-3-3A  6  Insert
SP126D  6  washer
C.  Operators Supply
New Part No.  QTY Keyword
CB200  A/R Adhesive
J41-26-008  ORIGINAL ISSUE: 5th October 2010
PAGE 12  REVISION No 2: 20th Sept 2011
Printed in the U.K.

### Page 16 (OCR)

BAe JET Series 4100
SERVICE BULLETIN
BLANK PAGE
DEVISION No 2: 25 Septer 2010  141-26-00
PAGE 1
Printed in the U.K.

### Page 17 (OCR)

BAE JETSTREAM
Series 4100
SERVICE BULLETIN
4. CONTINUED AIRWORTHINESS
A. Continued Airworthiness Instructions
B. The continued airworthiness instructions relating to this modification are already
included in the operators manuals, the effectivity of this information within these
manuals will be expanded to cover the aircraft included in this service bulletin.
C. Scheduled Maintenance
(1) Not applicable.
D. Removal Procedures
(1) Not applicable.
E. Installation Procedures
(1) Not applicable.
F. Test Procedures
(1) Not applicable.
G. Trouble Shooting
(1) Not applicable.
J41-26-008  ORIGINAL ISSUE: 5th October 2010
PAGE 14  REVISION No 2: 20th Sept 2011
Printed in the U.K.

### Page 18 (OCR)

BAE SYSTEMS
ACCOMPLISHMENT REPORT
SERVICE BULLETIN NUMBER  J41-26-008
TITLE: FIRE PROTECTION - RE-ORIENTATION OF FIRE EXTINGUISHER IN THE TOILET
VANITY UNIT AND INTRODUCTION OF REPLACEMENT UNIT
TO:  THE PROJECT MANAGER,
TECHNICAL PUBLICATIONS.
BAE SYSTEMS, REGIONAL AIRCRAFT,
PRESTWICK INTERNATIONAL AIRPORT,
AYRSHIRE, KA9 2RW,
SCOTLAND.
Telephone:  (01292) 675207
Fax:  (01292) 675704
E-mail:  RAPublications@baesystems.com
PLEASE BE ADVISED THAT THE ABOVE SERVICE BULLETIN HAS BEEN EMBODIED ON
AIRCRAFT CONSTRUCTORS NUMBER(S):
WE REQUEST THE APPROPRIATE REVISIONS TO APPLICABLE MANUALS.
NAME:
SIGNED:...........
COMPANY: ...........
DATE: ....................
SERVICE BULLETIN COMMENTS/FEEDBACK
Please report any non-technical comments or inaccuracies regarding this service bulletin to the
above address.
BAE SYSTEMS (Operations) Limited.
Printed in the U.K

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