AD Amdt-39-11320
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell | Various | Airworthiness Directives; LET Aeronautical Works Model L-13 ``Blanik'' Sailplanes |
Unsafe Condition
Elevator drive bellcrank inadvertently installed backwards, resulting in incorrect rigging of the elevator flight control with potential reduced or loss of control of the sailplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Paint the left hand elevator drive mechanism using a contrasting color, such as red paint, to prevent the bellcrank from being installed backwards.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
LET Aeronautical Works Model L-13 'Blanik' sailplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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