AD 95-21-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330-301 | Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes |
| aircraft | Airbus | A340-211 | Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes |
| aircraft | Airbus | A340-212 | Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes |
| aircraft | Airbus | A340-311 | Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes |
| aircraft | Airbus | A340-312 | Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes |
Unsafe Condition
Debris from the cartridge/disc of bottle #1 can partially clog the discharge pipe, preventing extinguishing agent from being discharged from bottle #2 in the lower deck cargo compartment fire extinguishing system.
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Required Actions
Replace the fire extinguisher distribution pipe and attachments in the lower deck cargo compartment fire extinguishing system with a modified pipe assembly as described in the applicable Airbus service bulletins. The modified pipe includes two new hoses with increased diameter and larger elbow radius to prevent blockage.
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Compliance Time
Within 450 flight hours after the effective date of this AD
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Affected Aircraft
Airbus Model A330-301, A340-211, -212, -311, and -312 series airplanes on which Airbus Modification 42451 has not been installed.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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