Airworthiness directives › 2014-01-04
AD 2014-01-04 Airworthiness Directives; Bae Systems (Operations) Limited Airplanes
Models named: BAe 146-100A, -200A, -300A, Avro 146-RJ70A, 146-RJ85A, 146-RJ100A. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bae Systems (Operations) Limited Model BAe 146-100A, -200A, and -300A airplanes; and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes; certificated in any category; all models, all serial numbers.
Compliance
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Required actions
For airplanes equipped with fire extinguishers manufactured by Kidde Graviner Limited having part number (P/N) 57333 (all dash numbers): Within 12 months after the effective date of this AD, do an x-ray inspection to determine if there is solder between the operating head and container of the fire extinguishers in the engine and APU, in accordance with the Accomplishment Instructions of Bae Systems (Operations) Limited Inspection Service Bulletin ISB. 26-078, dated September 21, 2011; or Kidde Graviner Service Bulletin 26-080, Revision 1, dated July 27, 2011; as applicable. (1) If any solder is found, before further flight, do the action specified in paragraph (g)(1)(i) or (g)(1)(ii) of this AD, in accordance with the Accomplishment Instructions of Kidde Graviner Service Bulletin 26-080, Revision 1, dated July 27, 2011. (i) Overhaul the fire extinguisher and install. An overhaul includes the replacement of the operating head. Replacement of the pressure relief plug assembly only is not considered an overhaul. (ii) Install a new fire extinguisher. (2) If no solder is found, no further action is required by this paragraph.
Unsafe condition
This AD was prompted by reports of excess solder deposited during overhaul on the frangible plug of the extinguisher, which prevented the release of the extinguishant. We are issuing this AD to prevent the failure of a fire extinguisher to discharge, which reduces the ability of the fire protection system to extinguish fires in the engine or auxiliary power unit (APU) fire zones, possibly resulting in damage to the airplane and injury to the passengers.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1