- Effective
- January 19, 1976
- Models
- SA 3180-Alouette Astazou, SA 318C-Alouette Astazou, SA.315B Alouette III, SA.316B Alouette III, SA.316C Alouette III, SA.319B Alouette III and 3 more
- Registered aircraft
- 19 matched by model
- Product
- Aircraft · Rotorcraft
- Amendment
- 39-2477
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
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| FAA DRS HTML | 21 KB | 6b01b7c7…1401fd4 | FAA DRS (API key needed) |
On this page
The airworthiness directive
75-27-05 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE: Amendment 39- 2477. Applies to Alouette helicopter Models SE-3130, SE-313B, SA-3180, SA-318C, SA-315B, SE-3160, SA-316B, SA-319B, and SA-316C incorporating 3130 series main rotor blade(s) with serial number 9554 and lower, and 3160 series main rotor blade(s) with serial number 6999 and lower. Compliance is required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished in accordance with Lama Service Bulletin No. 01.04 for the Model SA- 315B, or Alouette Service Bulletin No. 01.30 for the other designated models.
To prevent failure of the main rotor blades due to corrosion, inspect the blade spar in the section between the attachment fitting and root end rib for corrosion, repair as necessary, and return to service, in accordance with paragraphs 2 B(2), 2 B(3), 2 B(4) and 2 C of SGAC- approved Alouette Service Bulletin No. 01.30, as amended August 30, 1972, or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region.
This amendment becomes effective on January 19, 1976.
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 19
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1958 | 1 |
|---|---|
| 1959 | 1 |
| 1961 | 4 |
| 1969 | 1 |
| 1970 | 1 |
| 1976 | 1 |
10 with no year recorded