AD 98-05-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | 328 Support Services GmbH | 328-100 | Airworthiness Directives; DORNIER Model 328-100 Series Airplanes |
Unsafe Condition
Failure of the auxiliary propeller control feathering system due to insufficient load capacity of electrical relays 15KF and 16KF (part number DON405M520U5NL), which could result in inability to feather the propeller during engine failure combined with primary propeller pitch control failure, leading to reduced controllability.
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Required Actions
Replace electrical relays 15KF and 16KF with part number 2504MY1 per Dornier Service Bulletin SB-328-61-138 within 90 days after the effective date. Prohibit installation of the original relays (DON405M520U5NL) after the effective date.
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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 with serial numbers 3005 through 3063 inclusive
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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