AD 2003-26-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A319 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes Equipped With Certain Litton Air Data Inertial Reference Units |
Unsafe Condition
Failure of ADIRU 3 during flight, which could result in loss of one source of critical attitude and airspeed data and reduce the ability of the flightcrew to control the airplane.
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Required Actions
Modify the shelf (floor panel) above ADIRU 3 by installing shims between the shelf and the webs of the shelf support structure. For certain airplanes, modify the polycarbonate guard by installing shims between the guard and the shelf support structure. For other specified airplanes, modify the ladder located in the avionics compartment by machining the slot at the foot of the ladder to increase the depth by 0.236 inch.
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Compliance Time
Within 2 years after the effective date of this AD.
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Affected Aircraft
Airbus Model A319, A320, and A321 series airplanes equipped with Litton air data inertial reference units (ADIRU) installed per Airbus Modification 24852, 25108, 25336, 26002, or 28218; except those airplanes on which Airbus Modification 30650 or 30872 has been accomplished.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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