AD 2012-03-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A340-600 | Airworthiness Directives; Airbus Airplanes |
Unsafe Condition
Partial blockage of a certain water absorbing filter element, created by carbon debris from the cartridge and burst disc of the Halon bottle, could lead to reduction of the halon outflow, incapacity to maintain fire extinguishing agent concentration, and an uncontrolled fire in the affected compartment.
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Required Actions
Modify the fire extinguishing system from a three-bottles solution with 4 flow metering compact unit into a two-bottles solution with 2 flow metering systems equipped with upgraded water absorbing filter elements, in accordance with Airbus Mandatory Service Bulletin A340-26-5020, including Appendix 01, dated June 3, 2010.
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Compliance Time
Within 18 months after the effective date of this AD (February 28, 2012).
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Affected Aircraft
Airbus Model A340-642 airplanes, certificated in any category, all manufacturer serial numbers on which Airbus modification 47090 has been embodied in production; except those on which Airbus modification 51065 has been embodied in production.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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