- Effective
- July 28, 1975
- Models
- SA 3180-Alouette Astazou, SA 318B-Alouette Astazou, SA 318C-Alouette Astazou, SA.315B Alouette III, SA.316B Alouette III, SA.319B Alouette III and 3 more
- Registered aircraft
- 19 matched by model
- Product
- Aircraft · Rotorcraft
- Amendment
- 39-2279
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.
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|---|---|---|---|
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On this page
The airworthiness directive
75-16-06 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE: (S.N.I.A.S. formerly SUD AVIATION). Amendment 39-2279. Applies to Alouette Helicopters SE3130, SE313B, SA315B, SE3160, SA316B, SA3180, SA318B, SA318C, and SA319B equipped with tail rotor gearbox, P/Ns 3130S.66.20.000, 3130S.66.30.000, 3130S.66.40.000, 3130S.66.50.000, 3130S.66.60.000, or 3130S.66.70.000 without modification AM 1004, or P/Ns 3160S.66.00.000 or 3160.66.10.000 without modification AM 1582.
Compliance is required within the next 10 hours' time in service after the effective date of this AD, unless already accomplished in accordance with Lama Service Bulletin No. 01.03 for Model SA315B or Alouette Service Bulletin No. 01.29 for the other designated models.
To prevent possible jamming of the tail rotor directional control, accomplish the following:
(a) Determine the width of the top of the square thread at each end of screws P/N 3130S.66.23.002 or 3130S.66.50.016. If the width is between 1.5 and 2.0 mm, the assembly may be reinstalled without further work.
NOTE: Access to the screws is gained by removing the tail rotor pitch change control shaft.
(b) If the thread width is not within 1.5 and 2.0mm, rework the extreme end of the thread and reinstall the tail rotor pitch change assembly in accordance with Aerospatiale Service Bulletin No. 01.29 dated November 10, 1971 (except Aerospatiale Service Bulletin No. 01.03 dated November 10, 1971 for Model SA315B), or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region, c/o American Embassy, APO New York, NY 09667.
This amendment becomes effective July 28, 1975.
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