AD 92-07-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eiriavion Oy | PIK-20 | Airworthiness Directives; EIRIAVION Models PIK-20 and PIK-20B Sailplanes |
| aircraft | Eiriavion Oy | PIK-20B | Airworthiness Directives; EIRIAVION Models PIK-20 and PIK-20B Sailplanes |
Unsafe Condition
Cracking of lead mass balance strips on flaps and ailerons could result in loss of control of the sailplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove flaps and ailerons and inspect lead mass balance strips for cracks using a 10-power magnifying glass. If cracking is detected, replace the strips with malleable lead of same weight and dimensions, attach at same rivet holes with epoxy resin, use washers on rivets, and ensure compliance with service manual. Special flight permits may be issued under FAR 21.197 and 21.199.
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Compliance Time
within the next 25 hours time-in-service (TIS) after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 500 hours TIS
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Affected Aircraft
EIRIAVION Models PIK-20 and PIK-20B sailplanes (all serial numbers) equipped with lead mass balance strips on flaps and ailerons
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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