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AD/SA 315/18 - Main Gearbox Oil Acidity
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AD/SA 315/18 - Main Gearbox Oil Acidity
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| AD/SA 315/18 | Main Gearbox Oil Acidity | 7/2007 |
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| Applicability: | Eurocopter SA 315B helicopters. |
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| Requirement: | 1. When checking for correct oil level and condition of the magnetic plug on the MGB, ascertain that the oil is not cloudy, excessively blackened or has any abnormal smell.2. If any of the conditions above are detected, inspect the internal condition of the MGB though the filling and drain holes in accordance with AEROSPATIALE Service Bulletin LAMA No. 01.08.If the internal protection on the MGB is affected remove the MGB for repair.Note: DGAC AD 74-79-6 dated 4 July 1974 refers. |
| Compliance: | 1. During the daily inspection.2. Before further flight after the effective date of this AD. |
| This Airworthiness Directive becomes effective on 5 July 2007. | |
| Background: | Abnormal conditions such as cloudiness colour or smell can indicate excessive acidity of the oil in the MGB. This condition if not corrected can lead to failure of the MGB. |
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Charles Lenarcic
Delegate of the Civil Aviation Safety Authority
15 May 2007