AD 2010-08-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | 340-500 and -600 | Airworthiness Directives; Airbus Model 340-500 and -600 Series Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Model 340-500 and -600 Series Airplanes |
Unsafe Condition
Failure of the Yellow high pressure (HP) hydraulic pipe supplying the back-up Nose Wheel Steering (NWS), causing a hydraulic leak and contamination of the avionics bay with sprayed hydraulic fluid. This could result in ingestion of hydraulic fluid in electrical connectors, generating an arcing phenomenon and potentially leading to an ignition source.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the Yellow HP hydraulic line from frame 17 to the elbow connection near frame 20 for damage (e.g., chafing). Apply corrective actions as necessary, including replacing damaged or missing P-clamp grommets and P-clamps. Perform repetitive bleeding of the NWS system to verify the correct installation and condition of the HP hydraulic line. Inspect hydraulic pipes under damaged P-clamps for chafing if any P-clamp grommet is found missing or damaged.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 12 months of the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Model A340-541 and -642 airplanes, all manufacturer serial numbers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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