AD 2012-25-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330-300 | Airworthiness Directives; Airbus Airplanes |
Unsafe Condition
Loss of hydraulic locking function in spoiler servo-controls (SSCs) due to an internal leak from a sheared seal on the blocking valve, which could occur during take-off and go-around phases in combination with one engine inoperative, potentially reducing controllability of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect to determine the part number (P/N) of all SSCs installed. Perform an operational test of the hydraulic locking function for any SSC with P/N MZ4339390-12 or MZ4306000-12. Replace affected SSCs if any discrepancy is detected during the test before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 90 days after the effective date of the AD for inspection and identification of SSCs. Within 90 days after identification for operational testing. Before further flight if discrepancies are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Airbus Model A330-300 series airplanes (A330-301, -302, -303, -321, -322, -323, -341, -342, -343) and Model A340-200 and -300 series airplanes (A340-211, -212, -213, -311, -312, -313), 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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