# AD 75-24-14: Excessive Vibration

- Type: Airworthiness directive
- Status: Current
- Products: Airbus Helicopters SA 3180-Alouette Astazou, SA 318B-Alouette Astazou, SA 318C-Alouette Astazou, SA.315B Alouette III, SA.316B Alouette III, SA.316C Alouette III, SA.319B Alouette III, SE 3130-Alouette II, SE 313B-Alouette II and SE.3160 Alouette III
- Effective: October 30, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-2440
- Registered aircraft: 19 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/851AF0536C8D95BD86256A33006FC1A8.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-24-14

## The airworthiness directive

75-24-14 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE: Amendment 39- 2440. Applies to Alouette Helicopters SE-3130, SE-313B, SA-315B, SE-3160, SA-316B, SA- 316C, SA-3180, SA-318B, SA-318C, and SA-319B equipped with main rotor hydraulic dampers P/N 3130S.13.60.000.

Compliance is required as indicated, unless already accomplished.

To prevent excessive vibration or ground resonance, accomplish the following:

  (a) Prior to October 30, 1975, modify and reidentify main rotor hydraulic dampers P/N 3130S.13.60.000 in accordance with subparagraphs 2B(1), 2B(2), and 2(c) of Lama Service Bulletin No. 65.20 dated July 4, 1975, for Model SA-315B and Alouette Service Bulletin No. 65.107 dated July 4, 1975, for the other designated models, or equivalents approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region, c/o American Embassy, APO New York, New York, N.Y. 09667.

  (b) Prior to further flight, for Models SA-3160, SA-316B, SA-316C, andSA-319B, remove the placard required by AD 75-17-30, if installed, and install a temporary placard on the instrument panel, in full view of the pilot, reading as follows: "Maximum density altitude: 8200 feet". Temporary placard may be removed upon accomplishment of paragraph (a) of this AD.

(Alouette Service Bulletin No. 01.39 also refers to paragraph (b) of this AD).

This AD supersedes Amendment 39-2335 (40 FR 33010), AD 75-17-30.

This amendment is effective upon publication in the FEDERAL REGISTER as to all persons except those persons to whom it was made immediately effective by telegram dated September 30, 1975, which contained this amendment.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7H1](https://openairdocs.org/tcds/7H1): Airbus Helicopters; names 5 of 5 models: SE 3130-Alouette II, SE 313B-Alouette II, SA 318C-Alouette Astazou, SA 3180-Alouette Astazou, SA 318B-Alouette Astazou
- [TCDS H1IN](https://openairdocs.org/tcds/H1IN): Airbus Helicopters; names 5 of 5 models: SA.316C Alouette III, SA.316B Alouette III, SA.315B Alouette III, SE.3160 Alouette III, SA.319B Alouette III

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 19 (19 by airframe model, 0 by engine model)
- Makers: Aerospatiale 9, S N I A S 7, Sud 3

Models with the most aircraft:

- [S N I A S SE 3130 ALOUETTE II](https://openairdocs.org/model/s-n-i-a-s-se-3130-alouette-ii): 7 aircraft (airframe model)
- [Aerospatiale SA315B ALOUETTE III](https://openairdocs.org/model/aerospatiale-sa315b-alouette-iii): 4 aircraft (airframe model)
- [Aerospatiale SA319B ALOUETTE III](https://openairdocs.org/model/aerospatiale-sa319b-alouette-iii): 3 aircraft (airframe model)
- [Sud SA316B ALOUETTE III](https://openairdocs.org/model/sud-sa316b-alouette-iii): 2 aircraft (airframe model)
- [Aerospatiale SA316B ALOUETTE III](https://openairdocs.org/model/aerospatiale-sa316b-alouette-iii): 2 aircraft (airframe model)
- [Sud SE3130 ALOUETTE II](https://openairdocs.org/model/sud-se3130-alouette-ii): 1 aircraft (airframe model)

All 6 models: https://openairdocs.org/ad/75-24-14/models.md
Every aircraft: https://openairdocs.org/ad/75-24-14/aircraft.md

Its text cites no advisory circulars or STCs.

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