ORIGINAL ISSUE: 4th October 2011 ATP-26-016

 PAGE 1 OF 1 

BAE SYSTEMS (Operations) Limited. 

Printed in the U.K. 

SERVICE BULLETIN

BAE SYSTEMS, 

PRESTWICK INTERNATIONAL AIRPORT, 

AYRSHIRE, KA9 2RW, 

SCOTLAND. 

ATP-26-016 

TRANSMITTAL SHEET

This page transmits the original issue of service bulletin ATP-26-016, pages 1 to 10 inclusive. 

TITLE: INSPECTION OF FIRE BOTTLES FOR EXCESSIVE SOLDER BETWEEN OPERATING 

HEAD AND CONTAINER.

INSPECTION BULLETIN
ORIGINAL ISSUE: 4th October 2011 ATP-26-016 

 PAGE 1 of 10 

BAE SYSTEMS (Operations) Limited. 

Printed in the U.K. 

SERVICE BULLETIN

BAE SYSTEMS, 

PRESTWICK INTERNATIONAL AIRPORT, 

AYRSHIRE, KA9 2RW, 

SCOTLAND. 

ATP-26-016 

TITLE: INSPECTION OF FIRE BOTTLES FOR EXCESSIVE SOLDER BETWEEN OPERATING 

HEAD AND CONTAINER.

INSPECTION BULLETIN

1. PLANNING INFORMATION

A. Effectivity

All ATP Aircraft

Those aircraft fitted with Kidde Graviner engine and APU Automatic Fire Extinguisher 

57183 series, with fire bottles that have been overhauled to CMM 26-21-52 at revisions 

up to and including revision 12. 

Check the aircraft technical records for accomplishment of this inspection bulletin before 

actioning this Inspection Service Bulletin. 

B. Reason

A case has occured on one of our aircraft types where the use of excessive solder 

during fire bottle overhaul has resulted in the fire bottle failing to discharge when 

activated by the fire handle. The excessive solder has accumulated in the vicinity of the 

frangible plug, preventing it from fracturing to release the extinguisher agent. 

C. Description

This Inspection Service Bulletin details the procedure to inspect the engine 

and APU fire bottles. Removal and installation of the fire bottles is performed 

in accordance with the Aircraft Maintenance Manual (AMM) and examination to 

determine if the fire bottles are affected by the excessive solder issue is 

performed in accordance with Kidde Graviner Service Bulletin 26-080 at revision 

1 or later. 
ATP-26-016 ORIGINAL ISSUE: 4th October 2011 

PAGE 2 

Printed in the U.K. 

D. Manpower

Refer to Kidde Graviner Service Bulletin 26-080 at revision 1 or later. 

E. Material - Cost and Availability

None. 

F. Tooling - Price and Availability

None. 

G. Weight and Balance

None. 

H. Aircraft Noise Levels

Aircraft noise is not affected. 

I. Electrical Load Data

Not affected. 

J. Software Accomplishment Summary

Not applicable. 

K. References

AMM 26-21-11 page block 201, Engine Fire Extinguisher. 

AMM 26-21-14 page block 401, Engine Fire Extinguisher Cartridge Firing Unit. 

AMM 26-23-11 page block 401, APU Fire Extinguisher. 

AMM 26-23-14 page block 401, APU Fire Extinguisher Cartridge Firing Unit. 

Kidde Graviner SB 26-080 at revision 1 or later. 

L. Publications Affected

None. 

M. Family Tree Of Modification Relationships

Not applicable. 
ORIGINAL ISSUE: 4th October 2011 ATP-26-016

 PAGE 3 

Printed in the U.K. 

N. Approval

The technical content of this service bulletin is the subject of EASA Airworthiness 

Directive consultation. 

The technical content of this service bulletin is approved under the authority of EASA 

PART 21 Approval No. EASA.21J.047. 

This Inspection Service Bulletin is to be accomplished by 1st October 2012. 
ATP-26-016 ORIGINAL ISSUE: 4th October 2011 

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Printed in the U.K. 

BLANK PAGE 
ORIGINAL ISSUE: 4th October 2011 ATP-26-016

 PAGE 5 

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2. INSPECTION INSTRUCTIONS

WARNING: MAKE SURE THAT THE AIRCRAFT AND AIRCRAFT SYSTEMS ARE MADE 

SAFE AS DETAILED IN CHAPTER 12 OF THE AIRCRAFT MAINTENANCE 

MANUAL. 

A. Inspection

NOTE: Any bottle overhauled by Kidde Graviner or Hugens does not need inspection 

as the closing actions have been embodied. 

Any bottle where the overhaul can be demonstrated to satisfy the requirements 

of Kidde Graviner Service Inspection Letter 01-10 does not need inspection 

as the closing actions have been embodied. 

(1) Remove the Cartridge Firing Unit from the engine or APU fire bottle to be 

inspected in accordance with AMM 26-21-14 page block 401 or AMM 26-23-14 

page block 401, as appropriate. 

(2) Remove the engine or APU fire bottle to be inspected in accordance with AMM 

26-21-11 page block 401 or AMM 26-23-11 page block 401, as appropriate. 

(3) Inspect the fire bottle in accordance with Kidde Graviner SB 26-080 at revision 1 

or later. 

(4) Install a serviceable engine or APU fire bottle and test in accordance with AMM 

26-21-11 page block 401 or AMM 26-23-11 page block 401, as appropriate. 

NOTE: The serviceable fire bottle must have passed the inspection in accordance 

with Kidde Graviner SB 26-080 at revision 1 or later, or been overhauled in 

accordance with Kidde Graviner CMM 26-21-52 at revision 13 or later. 

(5) Install Cartridge Firing Unit on serviceable engine or APU fire bottle and test in 

accordance with AMM 26-21-14 page block 401 or AMM 26-23-14 page block 

401, as appropriate. 

B. Test

Not applicable. 

C. Recovery

(1) Make certain the work area is clean, and clear of tools and miscellaneous 

equipment. 

(2) Aircraft Records 

(a) Add Inspection Service Bulletin number ‘ATP-26-016’ to the aircraft records. 
ATP-26-016 ORIGINAL ISSUE: 4th October 2011 

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ORIGINAL ISSUE: 4th October 2011 ATP-26-016

 PAGE 7 

 Printed in the U.K. 

3. MATERIAL INFORMATION

None. 
ATP-26-016 ORIGINAL ISSUE: 4th October 2011 

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BLANK PAGE 
ORIGINAL ISSUE: 4th October 2011 ATP-26-016

 PAGE 9 

 Printed in the U.K. 

4. CONTINUED AIRWORTHINESS

A. Continued Airworthiness Instructions

(1) There are no continued airworthiness instructions associated with this Inspection 

Service Bulletin. 
ATP-26-016 ORIGINAL ISSUE: 4th October 2011 

PAGE 10 

Printed in the U.K. 

BLANK PAGE
Jul 27/11 (Revision 1) Service Bulletin No 26-080

Page 1 of 4

SERVICE BULLETIN

Kidde Graviner Limited

Mathisen Way

Colnbrook, Slough, Berkshire, SL3 0HB, United Kingdom

Telephone +44 (0) 1753 683245 Fax +44 (0) 1753 685040

AUTOMATIC FIRE EXTINGUISHER - 

EXCESS SOLDER BETWEEN OPERATING HEAD AND CONTAINER

1. Planning Information

A. Effectivity

Aircraft affected: Various

Unit affected: Automatic Fire Extinguisher

Part No. 12A, 13A, 59A, 60A, 99A, 146A, 161A, 162A, 167A, 170A, 170A-02, 182A, 187A,

229A(1), 242A(1), 236A, 237A, 241A, 1167A, 1187A, 1200A, 57133 Series, 57135

Series, 57183 Series, 57331 Series, 57333 Series, 57335 Series.

B. Concurrent Requirements

(1) None.

C. Reason

(1) Instances have occurred where excess solder has been used during the soldering process of the

operating head and container on single head automatic fire extinguishers which has caused an

extinguisher to fail to discharge on operation of the aircraft firing handle. 

D. Description

(1) This Service Bulletin is only applicable to units that have not been overhauled in accordance with

Kidde Graviner Service Information Letter 01-10, Kidde Graviner Component Maintenance

Manuals 26-21-40 at Revision 14 or 26-21-52 at Revision 13. This Service Bulletin informs

operators to remove the extinguisher from the aircraft or storage area and examine the unit with an

X-ray technique to see if there is solder between the operating head and container. Alternatively

operators can return the unit to Kidde Graviner Limited for examination. Units that have any

indication of solder must be overhauled.

E. Compliance

(1) It is recommended that the content of this Service Bulletin be done in accordance with the

requirements of the relevant aircraft OEM.

F. Approval

(1) Kidde Graviner have technically approved the content of this service bulletin. Before release to

operators or repair/overhaul agents for action, this service bulletin must be approved by a Type

Certificate Holder.

G. Manpower

(1) It will take an estimated one hour to do this Service Bulletin.

NOTE: It is assumed that the equipment has been put in a maintenance status. The man-hour

estimates do not include time for preparation, close-out or administrative functions.

H. Weight and Balance

(1) None.
Jul 27/11 (Revision 1) Service Bulletin No 26-080

Page 2 of 4

SERVICE BULLETIN

Kidde Graviner Limited

I. References

(1) Aircraft Maintenance Manual.

J. Other Publications Affected

(1) Component Maintenance Manual 26-21-40.

(2) Component Maintenance Manual 26-21-52

2. Material Information

A. Material

(1) None.

B. Tooling

(1) None.

3. Accomplishment Instructions

A. Procedure

(1) Make sure that the protection caps and recoil caps are installed on the unit (refer to Component

Maintenance Manual 26-21-40 or 26-21-52).

(2) Examine the unit with an X-ray procedure as follows:

(a) This procedure uses a MUELLER 300 X-ray machine with these parameters: Alternative

equipment is permitted with parameters set locally to give a suitable X-ray photograph.

1 Voltage - 210 kV

2 Current - 10 mA

3 Exposure - 60 seconds

4 Distance - 100 cm

5 Film - AGFA D7

6 Single Vertical Shot with Lead Screens

(b) Position the extinguisher so that an X-ray photograph as shown in Figure 1 can be taken

through the container and operating head: refer to Figure 1 and 2.

(c) Make an X-ray photograph as shown in Figure 1 so that the area can be examined.

(3) If there are indications of solder in the area shown on Figure 1, overhaul the unit (refer to

Component Maintenance Manual 26-21-40 at Revision 14 or 26-21-52 at Revision 13) or return the

unit to Kidde Graviner Limited for overhaul as follows: 

(a) Make sure that the protection caps and recoil caps are installed on the unit (refer to

Component Maintenance Manual 26-21-40 or 26-21-52).

(b) Pack the unit to prevent any damage.
Jul 27/11 (Revision 1) Service Bulletin No 26-080

Page 3 of 4

SERVICE BULLETIN

Kidde Graviner Limited

(c) Send the unit to:

Kidde Graviner Limited

Mathisen Way

Colnbrook

Slough

Berkshire, SL3 0HB

United Kingdom

(4) If there are no indications of solder in the area shown on Figure 1, return the unit to service or

storage. 

(5) When you have done this Service Bulletin, write the service bulletin number 26-080 Revision 1 in

the applicable aircraft documents.

Figure 1

X-Ray of Extinguisher Head

THIS AREA MUST BE FREE OF SOLDER WITH NO

SOLDER FILLET IN THE CORNERS (REFER TO FIGURE 2)
Jul 27/11 (Revision 1) Service Bulletin No 26-080

Page 4 of 4

SERVICE BULLETIN

Kidde Graviner Limited

Figure 2

Section through Defective Extinguisher

SOLDER FILLET

 IN DEFECTIVE

 UNIT

OPERATING

HEAD

THREADS FOR

CONTAINER