AD 2004-25-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A318 | Airworthiness Directives; Airbus Model A318, A319, A320, and A321 Series Airplanes |
Unsafe Condition
ISIS failure caused by a time-counter fault after 145 hours of continuous power supply, potentially leading to loss of ISIS and all EIS display units, reducing flightcrew situational awareness and contributing to loss of control or impact with obstacles or terrain.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Regularly perform a complete electrical shutdown of the airplane to reset the integrated standby instrument system (ISIS).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 145 flight hours of continuous power supply to the ISIS.
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Affected Aircraft
Airbus Model A318, A319, A320, and A321 series airplanes with the affected ISIS installed.
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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