AD 80-16-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BLANIK LIMITED | Blanik L-13 | Airworthiness Directive; LET BLANIK Model L 13 Gliders |
| aircraft | BLANIK LIMITED | Blanik L-13 AC | Airworthiness Directive; LET BLANIK Model L 13 Gliders |
Unsafe Condition
Failure of the horizontal stabilizer outer end ribs due to cracks in the radii, potentially caused by failure to protect critical parts during ground transportation or assembly/disassembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 hours time in service after the effective date, visually inspect the radii of the horizontal stabilizer end ribs for cracks. Depending on crack presence and length, either reinforce ribs, replace ribs with new parts, repair and reinforce, or conduct repetitive inspections at intervals not exceeding 100 hours. Replace and reinforce ribs if further cracking is found during inspections.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 10 hours time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BLANIK LIMITED Model L 13 gliders, including L-13 and L-13 AC variants, 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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