AD 2010-10-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A318 | Airworthiness Directives; Airbus A318, A319, A320, A321 Series Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus A318, A319, A320, A321 Series Airplanes |
Unsafe Condition
Loss of AC BUS 1 leading to loss of AC ESS BUS and DC ESS BUS, affecting multiple flight deck Display Units, which could contribute to loss of situational awareness and control of the airplane.
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Required Actions
Modify the electrical network configuration management logic by adding an automatic switching of AC and DC ESS BUS power supply. Depending on configuration, add a new circuit breaker, relay, and diode to the AC/DC ESS BUS circuit.
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Compliance Time
Within 48 months of the effective date (June 21, 2010)
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Affected Aircraft
Airbus Model A318-111, -112, -121, -122; A319-111, -112, -113, -114, -115, -131, -132, -133; A320-111, -211, -212, -214, -231, -232, -233; A321-111, -112, -131, -211, -212, -213, -231, -232 airplanes, all serial numbers, except those with modification 37317 in production.
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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