AD 2011-02-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Aircraft Industries a.s. Model L 23 Super Blanik Sailplanes |
Unsafe Condition
Cracks were reported on the rear horizontal stabilizer bracket of two L 23 SUPER-BLANIK sailplanes. This condition, if not corrected, could result in no longer retaining the horizontal stabilizer in place and consequent loss of control of the aeroplane.
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Required Actions
Inspect the rear horizontal stabilizer bracket critical areas (hinge wear areas) at the top of the fin (drawing No. A 730 420 N). Replace the bracket depending on findings.
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Compliance Time
Before further flight after the effective date of this AD.
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Affected Aircraft
Aircraft Industries a.s. Model L 23 Super Blanik sailplanes, all serial numbers, 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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