AD 99-07-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Alpha Aviation Concept Limited | R2160 | Airworthiness Directives; Avions Pierre Robin Model R2160 Airplanes |
Unsafe Condition
Defects (cracks, loose rivets, or spar web distortion) in the vertical stabilizer spar could result in structural failure of the vertical stabilizer with possible reduced or loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours time-in-service after the effective date, inspect the vertical stabilizer spar in the area of the lower fitting of the rudder for cracks, loose rivets, or spar web distortion. Repeat inspections at intervals not exceeding 100 hours TIS until the modification is incorporated. Modify the spar with Kit No. 97.40.03 either before further flight if defects are found or within 12 calendar months after the effective date.
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Compliance Time
Within the next 50 hours time-in-service after the effective date of this AD, and thereafter at intervals not to exceed 100 hours TIS until the modification required by paragraph (b) of this AD is incorporated. The modification must be done before further flight if defects are found or within 12 calendar months after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Avions Pierre Robin Model R2160 airplanes, all serial numbers, 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 8, 2026
Rights: U.S. Government Public Domain
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