AD 98-24-23
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | SA.316B Alouette III | Airworthiness Directives; Eurocopter France Model SE.3160, SA.316B, SA.316C, and SA.319B Helicopters |
| aircraft | Airbus Helicopters | SA.316C Alouette III | Airworthiness Directives; Eurocopter France Model SE.3160, SA.316B, SA.316C, and SA.319B Helicopters |
| aircraft | Airbus Helicopters | SA.319B Alouette III | Airworthiness Directives; Eurocopter France Model SE.3160, SA.316B, SA.316C, and SA.319B Helicopters |
| aircraft | Airbus Helicopters | SE.3160 Alouette III | Airworthiness Directives; Eurocopter France Model SE.3160, SA.316B, SA.316C, and SA.319B Helicopters |
Unsafe Condition
Fatigue cracks in horizontal stabilizer spar tubes, part numbers 3160.35.30.031.1 or .2, originating at or near the airframe attaching fitting, caused by corrosion or fretting, which could cause loss of the horizontal stabilizer and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect horizontal stabilizer spar tubes using a 10-power magnifying glass within 50 hours time-in-service (TIS) and thereafter at intervals not exceeding 200 hours TIS or 12 calendar months, whichever comes first. Replace the spar tube if cracks are found, repair if crazing, corrosion, fretting marks, or scratches are present and repairable, following specified service bulletin procedures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours time-in-service (TIS) and thereafter at intervals not to exceed 200 hours TIS or 12 calendar months, whichever comes first. Actions requiring before further flight include replacement or specific repairs when cracks, corrosion pitting, or other defects are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter France Model SE.3160, SA.316B, SA.316C, and SA.319B helicopters, 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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