# AD 2004-11-01: Engine fire extinguishing wiring - Type: Airworthiness directive - Status: Current - Products: Textron BAe.125 Series 800A, BAe.125 Series 800A (C-29A), BAe.125 Series 800A (U-125), BAe.125 Series 800B, Hawker 800, Hawker 800 (U-125A) and Hawker 800XP - Effective: July 7, 2004 - Published: June 2, 2004, 69 FR 30999–31000 - Issued: May 17, 2004 - Issued as: Final rule - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-13646 - Docket: 2003-NM-216-AD - Registered aircraft: 369 may be affected, by airframe or engine model (OpenAirDocs) - Official PDF: https://openairdocs.org/files/sha256/e7/e4/e7e4d162395ce00930d9c70a7a4b0a6229369d16ab689cb1eb77cff51b671db0 (from https://www.govinfo.gov/content/pkg/FR-2004-06-02/pdf/04-11959.pdf) - Federal Register: https://www.federalregister.gov/documents/2004/06/02/04-11959/airworthiness-directives-raytheon-model-bae125-series-800a-including-c-29a-and-u-125-variant-and - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/28CDFCE42EBCD38886256EA7004EDC6E.0001 - DRS record last changed: January 21, 2026 - Page: https://openairdocs.org/ad/2004-11-01 ## Summary This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Model BAe.125 series 800A (including C-29A and U-125 variant) and 800B airplanes; and Model Hawker 800 (including U-125A variant) and 800XP airplanes; that requires a functional test of the engine fire extinguishing wiring for the appropriate installation; verification of the correct wiring connector installation; correction of wiring if necessary; and installation of new marker bands. This action is necessary to prevent incorrect wiring of the engine fire extinguisher bottles, which could result in one or both fire extinguisher bottles being discharged into the wrong engine nacelle. This action is intended to address the identified unsafe condition. ## The airworthiness directive ### Adoption of the Amendment Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: 1. The authority citation for part 39 continues to read as follows: 2. Section 39.13 is amended by adding the following new airworthiness directive: 2004-11-01 Raytheon Aircraft Company: Amendment 39-13646. Docket 2003-NM-216-AD. Applicability: Model BAe.125 series 800A (including C-29A and U-125 variant) and 800B airplanes; and Model Hawker 800 (including U-125A variant) and 800XP airplanes; as listed in Raytheon Service Bulletin SB 26-3610, Revision 1, dated September 2003; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent incorrect wiring of the engine fire extinguisher bottles, which could result in one or both fire extinguisher bottles being discharged into the wrong engine nacelle, accomplish the following: ### (a) Function Test, Verification, Installation, and Corrective Action (a) Within 70 flight hours or 30 days after the effective date of this AD, whichever occurs first, do the actions specified in paragraphs (a) (1) and (a) (2) of this AD per the Accomplishment Instructions of Raytheon Service Bulletin SB 26-3610, Revision 1, dated September 2003. (1) Perform a functional test of the engine fire extinguishing wiring for appropriate installation, and verify the correct wiring connector installation. If any connector is wired incorrectly, prior to further flight, correct the wiring. (2) Install the new marker bands. ### (b) Exception to Service Bulletin (b) Although the service bulletin referenced in this AD specifies to submit certain information to the manufacturer, this AD does not include such a requirement. ### (c) Alternative Methods of Compliance (c) In accordance with 14 CFR 39.19, the Manager, Wichita Aircraft Certification Office, FAA, is authorized to approve alternative methods of compliance for this AD. ### (d) Incorporation by Reference (d) The required actions shall be done in accordance with Raytheon Service Bulletin SB 26-3610, Revision 1, dated September 2003. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Raytheon Aircraft Company, Department 62, P.O. Box 85, Wichita, Kansas 67201-0085. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call (202) 741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. ### (e) Effective Date (e) This amendment becomes effective on July 7, 2004. ## Rule preamble ### Dates Effective July 7, 2004. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of July 7, 2004. ### Addresses The service information referenced in this AD may be obtained from Raytheon Aircraft Company, Department 62, P.O. Box 85, Wichita, Kansas 67201-0085. This information may be examined at the Federal Aviation Administration (FAA), Transport Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call (202) 741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. ### For further information contact Jeff Pretz, Aerospace Engineer, Airframe and Propulsion Branch, ACE-118W, FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209; telephone (316) 946-4153; fax (316) 946-4107. ### SUPPLEMENTARY INFORMATION A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to include an airworthiness directive (AD) that is applicable to certain Raytheon Model BAe.125 series 800A (including C-29A and U-125 variant) and 800B airplanes; and Model Hawker 800 (including U-125A variant) and 800XP airplanes; was published in the Federal Register on February 26, 2004 (69 FR 8880). That action proposed to require a functional test of the engine fire extinguishing wiring for the appropriate installation; verification of the correct wiring connector installation; correction of wiring if necessary; and installation of new marker bands. ### Comments Interested persons have been afforded an opportunity to participate in the making of this amendment. No comments were submitted in response to the proposal or the FAA's determination of the cost to the public. ### Conclusion The FAA has determined that air safety and the public interest require the adoption of the rule as proposed. ### Cost Impact There are approximately 615 airplanes of the affected design in the worldwide fleet. The FAA estimates that 430 airplanes of U.S. registry will be affected by this AD, that it will take approximately 2 work hours per airplane to accomplish the required actions, and that the average labor rate is $65 per work hour. Required parts will cost approximately $20 per airplane. Based on these figures, the cost impact of the AD on U.S. operators is estimated to be $64,500, or $150 per airplane. The cost impact figure discussed above is based on assumptions that no operator has yet accomplished any of the requirements of this AD action, and that no operator would accomplish those actions in the future if this AD were not adopted. The cost impact figures discussed in AD rulemaking actions represent only the time necessary to perform the specific actions actually required by the AD. These figures typically do not include incidental costs, such as the time required to gain access and close up, planning time, or time necessitated by other administrative actions. The manufacturer may cover the cost of replacement parts associated with this proposed AD, subject to warranty conditions. Manufacturer warranty remedies may also be available for labor costs associated with this AD. As a result, the costs attributable to the AD may be less than stated above. ### Regulatory Impact The regulations adopted herein will not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. Therefore, it is determined that this final rule does not have federalism implications under Executive Order 13132. For the reasons discussed above, I certify that this action: (1) Is not a “significant regulatory action” under Executive Order 12866; (2) is not a “significant rule” under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. A final evaluation has been prepared for this action and it is contained in the Rules Docket. A copy of it may be obtained from the Rules Docket at the location provided under the caption ADDRESSES. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A3EU](https://openairdocs.org/tcds/A3EU): Textron Aviation Inc.; names 4 of 50 models: BAe.125 Series 800A (U-125), BAe.125 Series 800B, Hawker 800 (U-125A), Hawker 800XP ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 369 (369 by airframe model, 0 by engine model) - Makers: Raytheon 253, British Aerospace 66, Raytheon Corporate Jets 40, Corporate Jets 8, Hawker Beechcraft 2 Models with the most aircraft: - [Raytheon HAWKER 800XP](https://openairdocs.org/model/raytheon-hawker-800xp): 251 aircraft (airframe model) - [British Aerospace BAE 125 SERIES 800A](https://openairdocs.org/model/british-aerospace-bae-125-series-800a): 61 aircraft (airframe model) - [Raytheon Corporate Jets HAWKER 800XP](https://openairdocs.org/model/raytheon-corporate-jets-hawker-800xp): 23 aircraft (airframe model) - [Raytheon Corporate Jets HAWKER 800](https://openairdocs.org/model/raytheon-corporate-jets-hawker-800): 9 aircraft (airframe model) - [Corporate Jets BAE 125-800A](https://openairdocs.org/model/corporate-jets-bae-125-800a): 8 aircraft (airframe model) - [Raytheon Corporate Jets BAE 125-800A](https://openairdocs.org/model/raytheon-corporate-jets-bae-125-800a): 8 aircraft (airframe model) - [British Aerospace BAE 125-800A](https://openairdocs.org/model/british-aerospace-bae-125-800a): 5 aircraft (airframe model) - [Raytheon BAE 125-800A](https://openairdocs.org/model/raytheon-bae-125-800a): 2 aircraft (airframe model) - [Hawker Beechcraft HAWKER 800XP](https://openairdocs.org/model/hawker-beechcraft-hawker-800xp): 1 aircraft (airframe model) - [Hawker Beechcraft BAE 125-800B](https://openairdocs.org/model/hawker-beechcraft-bae-125-800b): 1 aircraft (airframe model) All 11 models: https://openairdocs.org/ad/2004-11-01/models.md Every aircraft: https://openairdocs.org/ad/2004-11-01/aircraft.md ## Related documents - [Proposed rule 2003-NM-216-AD](https://openairdocs.org/proposed/2003-NM-216-AD): Notice of proposed rulemaking (NPRM), published Feb 26, 2004 Its text cites no advisory circulars or STCs. --- 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.