AD 2011-05-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Inc | Airworthiness Directives; Viking Air Limited (Type Certificate No. A-815 Formerly Held by Bombardier Inc. and de Havilland, Inc.) Model DHC-3 Airplanes |
| aircraft | Viking | Various | Airworthiness Directives; Viking Air Limited (Type Certificate No. A-815 Formerly Held by Bombardier Inc. and de Havilland, Inc.) Model DHC-3 Airplanes |
| aircraft | de Havilland | Various | Airworthiness Directives; Viking Air Limited (Type Certificate No. A-815 Formerly Held by Bombardier Inc. and de Havilland, Inc.) Model DHC-3 Airplanes |
Unsafe Condition
Excessive free-play in the elevator control tabs could develop, leading to loss of tab control linkage and severe elevator flutter, which could result in possible loss of control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Repetitively inspect the elevator control tabs for discrepancies. If any discrepancies are found, take necessary corrective actions to bring all discrepancies within acceptable tolerances. Report certain inspection results to the FAA.
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Compliance Time
Within the compliance times specified in the AD, unless already done.
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Affected Aircraft
Viking Air Limited (Type Certificate No. A-815 formerly held by Bombardier Inc. and de Havilland, Inc.) Model DHC-3 airplanes, all serial numbers, that do not have the new elevator servo tab and redundant control linkage installed according to Supplemental Type Certificate (STC) No. SA01059SE, and are 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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