AD 86-15-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Burkhart Grob Luft-Und | GROB G 109B | Airworthiness Directives; GROB-WERKE GMBH Model Grob G 109B Motorgliders |
Unsafe Condition
Aileron flutter could result in loss of control of the motorglider.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Attach a placard on the instrument panel with specified wording, place a copy of this AD in the flight manual's limitation section, and modify the motorglider by installing a rudder damper, additional aileron mass-balance, and stiffening rudder hinge attachment points as per specified documents. Equivalent compliance may be approved.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 5 hours time-in-service after the effective date of this AD.
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Affected Aircraft
GROB-WERKE GMBH Model Grob G 109B motorgliders (serial numbers 6200 through 6430 inclusive)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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