AD 2001-01-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Rolladen Schneider Flugzeugbau GmbH Models LS 4 and LS 4a Sailplanes |
Unsafe Condition
Damage to the airbrake locking bracket caused by asymmetric loads, resulting from improper rigging of the airbrake system, which could lead to cracks in the welding region of the airbrake tube and lateral deformation of the airbrake locking bracket.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the airbrake locking bracket on the rear landing gear box for signs of fatigue (cracks in the paint, paint chips, or cracks in the welding region to the tube) and inspect for proper rigging of the airbrake system. If improper rigging is found, reassemble the airbrake system. If any sign of fatigue is evident, disassemble the airbrake system, obtain a modified airbrake locking bracket from the manufacturer, install this bracket, and accomplish certain adjustments after reassembling the airbrake system. Report any damage found to the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 30 calendar days after the effective date of this AD (March 9, 2001).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolladen Schneider Flugzeugbau GmbH Models LS 4 and LS 4a sailplanes, serial numbers 4000 through 4852, that are certificated in any category.
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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