Service Instruction No. 1504

Cylinder Assembly Replacement on O-235 Engines Operated Under DGAC Authority

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DATE: January 26, 2001

MODELS AFFECTED

O-235 aircraft engines operated under the authority of the French Direction Generale De L’Aviation Civile (DGAC.)

TIME OF COMPLIANCE

At owner’s discretion.

The French DGAC has reported a significant number of O-235 cylinder barrel failures in France. These failures have initiated from corrosion pits at the base area of the cylinder.

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