AD 2004-22-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dornier | Model 328-100 and -300 Series | Airworthiness Directives; Dornier Model 328-100 and -300 Series Airplanes |
Unsafe Condition
Failure of critical ice protection systems following a lightning strike, which could result in reduced controllability and degraded performance of the airplane in the event of an encounter with icing conditions.
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Required Actions
Inspect transient absorption zener (TAZ) diodes and metal oxide varistor (MOV) modules to determine if those parts are outside of tolerance limits. Replace faulty parts with new ones if necessary.
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Compliance Time
Within 90 days after the effective date of this AD.
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Affected Aircraft
Dornier Model 328-100 series airplanes, serial numbers 3005 through 3119 inclusive; and Model 328-300 series airplanes, serial numbers 3105 through 3207 inclusive, except serial numbers 3199, 3200, 3203, and 3204; 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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