AD 93-23-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | SA.315B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE AND EUROCOPTER FRANCE Model SE 3160, SA 315B, SA 316B, SA 316C, and SA 319B Series Helicopters |
| aircraft | Airbus Helicopters | SA.316B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE AND EUROCOPTER FRANCE Model SE 3160, SA 315B, SA 316B, SA 316C, and SA 319B Series Helicopters |
| aircraft | Airbus Helicopters | SA.316C Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE AND EUROCOPTER FRANCE Model SE 3160, SA 315B, SA 316B, SA 316C, and SA 319B Series Helicopters |
| aircraft | Airbus Helicopters | SA.319B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE AND EUROCOPTER FRANCE Model SE 3160, SA 315B, SA 316B, SA 316C, and SA 319B Series Helicopters |
| aircraft | Airbus Helicopters | SE.3160 Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE AND EUROCOPTER FRANCE Model SE 3160, SA 315B, SA 316B, SA 316C, and SA 319B Series Helicopters |
Unsafe Condition
Excessive main rotor vibrations that could result in failure of rotor system components 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
Install an outside air temperature (OAT) and velocity never exceed (VNE) airspeed limitation flip chart placard, part number LOM3160-151, on the instrument panel. Operate the helicopter according to the Helicopter Flight Manual Supplement approved November 25, 1992. Compliance must follow Les 'Blades' De L'Helicoptere, Ltd. Service Information Letter No. 1-11-92A.
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Compliance Time
within 25 hours' time-in-service after the effective date of this airworthiness directive (February 17, 1994), unless accomplished previously
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Affected Aircraft
Model SE 3160, SA 315B, SA 316B, SA 316C, and SA 319B series helicopters equipped with main rotor blades, part number LOM3160-100 installed under Supplemental Type Certificate SH778GL.
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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