AD 2004-25-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330 and A340 | Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes |
Unsafe Condition
Loss of the integrated standby instrument system (ISIS) due to a time-counter fault after 145 hours of continuous power supply, combined with loss of all electronic instrument system (EIS) display units, could reduce flightcrew situational awareness and contribute 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 ISIS. Optionally, replace the existing ISIS with an improved ISIS as a terminating action.
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.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Model A330 and A340 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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