AD 2001-13-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330 and A340 | Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes |
Unsafe Condition
Lost or erroneous airspeed indications during severe icing conditions, which could result in lack of sufficient information for the flight crew to safely operate the airplane, and consequent inadvertent excursions outside the normal flight envelope.
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Required Actions
Revise the FAA-approved Airplane Flight Manual (AFM) to include procedures for flight crew to follow in the event of lost or erroneous airspeed indications. These procedures include switching off the AP/FD and A/THR, maintaining flaps/slats in the current configuration, checking speedbrakes are retracted, selecting landing gear up when airborne, and applying specific thrust and pitch attitudes based on aircraft configuration and altitude.
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Compliance Time
Within 10 days after the effective date of this AD.
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Affected Aircraft
All Airbus Model A330 and A340 series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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