AD 84-20-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Alexander Schleicher GmbH & Co. | ASW-15B | Airworthiness Directives; ALEXANDER SCHLEICHER Models ASW 15 and ASW 15 B Sailplanes |
| aircraft | Alexander Schleicher GmbH & Co. | ASW -15 | Airworthiness Directives; ALEXANDER SCHLEICHER Models ASW 15 and ASW 15 B Sailplanes |
Unsafe Condition
Elevator bellcrank failure due to fatigue.
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Required Actions
Visually inspect the bellcrank for cracks in accordance with Item 1 of Alexander Schleicher Technical Note No. 21. If no cracks are found, reconnect and re-rig the rudder following TN No. 21. If cracks are found, replace the bellcrank in accordance with Item 2 of TN No. 21 and repair instruction 'A' of the technical manual. Alternatively, reinforce the bellcrank and modify the fin spar and root rib per Technical Note No. 22 to eliminate repetitive inspections.
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Compliance Time
Within the next 10 takeoffs or 25 hours time-in-service, whichever occurs first, unless already accomplished within the last 90 takeoffs or 75 hours time-in-service. Thereafter, at intervals of 100 takeoffs or 100 hours time-in-service, whichever occurs first.
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Affected Aircraft
Alexander Schleicher GmbH & Co. Models ASW 15 and ASW 15 B sailplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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