AD 2011-16-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A300 B4-600 | Airworthiness Directives; Airbus Model A300 B4-600, A300 B4-600R, and A300 F4-600R Series Airplanes, and Model A300 C4-605R Variant F Airplanes (Collectively Called Model A300-600 Series Airplanes); Model A310 Series Airplanes; Model A318 Series Airplanes; Model A319 Series Airplanes; Model A320-211, -212, -214, -231, -232, and -233 Airplanes; Model A321 Series Airplanes; Model A330-200 and A330-300 Series Airplanes; and Model A340-200, A340-300, A340-500, and A340-600 Series Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Model A300 B4-600, A300 B4-600R, and A300 F4-600R Series Airplanes, and Model A300 C4-605R Variant F Airplanes (Collectively Called Model A300-600 Series Airplanes); Model A310 Series Airplanes; Model A318 Series Airplanes; Model A319 Series Airplanes; Model A320-211, -212, -214, -231, -232, and -233 Airplanes; Model A321 Series Airplanes; Model A330-200 and A330-300 Series Airplanes; and Model A340-200, A340-300, A340-500, and A340-600 Series Airplanes |
Unsafe Condition
Batch of screws used to attach balance washers on the RAT turbine assembly or RAT turbine lower gear box assembly have not received the correct heat treatment, exposing them to potential fracture and detachment of balance washers, leading to increased RAT vibrations and possible RAT part detachment.
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Required Actions
Identify affected RAT turbine assemblies or RAT turbine lower gear box assemblies and replace all balance weight screws. If balance washer detachment is found, replace the entire RAT turbine assembly or RAT turbine lower gear box assembly.
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Compliance Time
Before further flight
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Affected Aircraft
Airbus Model A300 B4-600, A300 B4-600R, A300 F4-600R, A300 C4-605R Variant F, A310, A318, A319, A320-211, -212, -214, -231, -232, -233, A321, A330-200, A330-300, A340-200, A340-300, A340-500, and A340-600 series airplanes.
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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