AD 77-25-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Alexander Schleicher GmbH & Co. | Rhonlerche II | Airworthiness Directives; Alexander Schleicher Model Rhonlerche II Gliders |
Unsafe Condition
Shearing of the cotter pins which safety the aileron control Clevis pins and possible loss of aileron control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect Clevis pins connecting aileron control cables to main control shaft and re-insert from aft to front with new cotter pins if not properly oriented. Inspect skid thickness and replace if 3/4 inches or less in thickness, focusing on the area 24 to 32 inches in front of the wheel-axle. Revise flight and service manual to include Clevis pin insertion direction and skid thickness requirements.
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, unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Alexander Schleicher GmbH & Co. Model Rhonlerche II gliders, all serial numbers
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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