AD 75-17-20

Airworthiness directive · Main Rotor Blade · Airbus Helicopters SA341G

Effective
August 19, 1975
Model
SA341G
Data sheet
TCDSH6EU
Registered aircraft
23 matched by model
Product
Aircraft · Rotorcraft
Amendment
39-2322

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.

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The airworthiness directive

75-17-20 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE: Amendment 39- 2322. Applies to Model SA-341G "Gazelle" helicopters, serial numbers 1299 and lower, certificated in all categories.

Compliance is required within the next 100 hours' time in service, unless already accomplished in accordance with SA-341 Service Bulletin No. 65.10.

To detect excessive elongation of main rotor blade torsion strip stacks in service, and prevent consequent loss of helicopter control, accomplish the following:

(a) Install three "tell-tale" devices on the main rotor hub in accordance with subparagraph 1C (1) of SA-341 Service Bulletin No. 65.10 dated February 27, 1975, or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region.

(b) Prior to first flight of the day, visually check "tell-tale" device for condition of the frangible screw. If the frangible screw is found broken, rectify "tell-tale" installation and replace associated torsion strip stack in accordance with subparagraph 1C (2) of SA-341 Service Bulletin No. 65.10, dated February 27, 1975, or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region.

The check required by this AD may be performed by the pilot.

This amendment becomes effective August 19, 1975.

Affected TCDS · 1

The type certificate data sheets for the models this AD names, matched by model and maker.

Registered aircraft · 23

Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.

By aircraft maker
  • Aerospatiale20 aircraft
  • S N I A S2 aircraft
  • Eurocopter France1 aircraft
By year built
19721978
Registered aircraft by year built: 19 aircraft
19724
19731
19744
19755
19773
19782

4 with no year recorded

By model

Aircraft

See all 23 aircraft