# Kidde Aerospace Service Bulletin 26-080: Revision 1 - Rights: © KIDDE TECHNOLOGIES, INC. Filed by the FAA in regulations.gov docket FAA-2013-0793; AD 2014-01-04 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Kidde Aerospace Service Bulletin 26-080](https://openairdocs.org/service-documents/kidde/sb-26-080.md) - Title as filed: U.S. DOT/FAA - SB 26-080R01 - Pages: 4 - PDF: https://openairdocs.org/files/sha256/b2/5e/b25e189212c214732d9746415ae6219587e4f95b3042d49f9ae22a38812b3e1b - Page: https://openairdocs.org/service-documents/kidde/sb-26-080/file/b25e189212c2 ## 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) Kidde Graviner A Hamilton Sundstrand Company Kidde Graviner Limited Mathisen Way Colnbrook, Slough, Berkshire, SL3 OHB, United Kingdom Telephone +44 (0) 1753 683245 Fax +44 (0) 1753 685040 SERVICE BULLETIN 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 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 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 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 1 of 4 ### Page 2 (OCR) Kidde Graviner A Hamilton Sundstrand Company Kidde Graviner Limited SERVICE BULLETIN 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 Exposure - 60 seconds Distance - 100 cm 5 Film - AGFA D7 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 2 of 4 ### Page 3 (OCR) Kidde Graviner A Hamilton Sundstrand Company Kidde Graviner Limited SERVICE BULLETIN (c) Send the unit to: Kidde Graviner Limited Mathisen Way Colnbrook Slough Berkshire, SL3 0HB United Kingaom (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. THIS AREA MUST BE FREE OF SOLDER WITH NO SOLDER FILLET IN THE CORNERS (REFER TO FIGURE 2) Figure 1 X-Ray of Extinguisher Head Jul 27/11 (Revision 1) Service Bulletin No 26-080 Page 3 of 4 ### Page 4 (OCR) 2 Kidde Graviner A Hamilton Sundstrand Company Kidde Graviner Limited SERVICE BULLETIN THREADS FOR CONTAINER OPERATING HEAD SOLDER FILLET IN DEFECTIVE UNIT Figure 2 Section through Defective Extinguisher Jul 27/11 (Revision 1) Service Bulletin No 26-080 Page 4 of 4 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.