AD 91-12-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dornier Luftfahrt GmbH | Dornier 228-100 | Airworthiness Directives; DORNIER Model Dornier 228-100, 228-101, 228-200, 228- 201, 228-202, and 228-212 Airplanes |
| aircraft | Dornier Luftfahrt GmbH | Dornier 228-101 | Airworthiness Directives; DORNIER Model Dornier 228-100, 228-101, 228-200, 228- 201, 228-202, and 228-212 Airplanes |
| aircraft | Dornier Luftfahrt GmbH | Dornier 228-200 | Airworthiness Directives; DORNIER Model Dornier 228-100, 228-101, 228-200, 228- 201, 228-202, and 228-212 Airplanes |
| aircraft | Dornier Luftfahrt GmbH | Dornier 228-201 | Airworthiness Directives; DORNIER Model Dornier 228-100, 228-101, 228-200, 228- 201, 228-202, and 228-212 Airplanes |
| aircraft | Dornier Luftfahrt GmbH | Dornier 228-202 | Airworthiness Directives; DORNIER Model Dornier 228-100, 228-101, 228-200, 228- 201, 228-202, and 228-212 Airplanes |
| aircraft | Dornier Luftfahrt GmbH | Dornier 228-212 | Airworthiness Directives; DORNIER Model Dornier 228-100, 228-101, 228-200, 228- 201, 228-202, and 228-212 Airplanes |
Unsafe Condition
Failure of the horizontal stabilizer electric trim system relays (4CC, 5CC, 8CC, and 9CC) could result in loss of trim system function or unintended trim movement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace relays 4CC, 5CC, 8CC, and 9CC with improved relays and modify their electrical connections per Dornier Service Bulletins SB-228-160 or SB-228-164 (depending on autopilot/trim coupling option).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 600 hours time-in-service after the effective date of this AD
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Affected Aircraft
Dornier Luftfahrt GmbH Model Dornier 228-100, 228-101, 228-200, 228-201, 228-202, and 228-212 airplanes with serial numbers 7005 through 7167, 8002 through 8161, and 8163 through 8190.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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