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No. 394Problem statementManufacturing and materials

Design and development of spark plug part no sp 87PA of AL-31FP aero engine

Source

Source summary

Develop the specified SP-87PA spark plug for the AL-31FP aircraft engine, preserving fit in the main combustion chamber. The source specifies at least 1,000 flying hours of life and a maximum 0.28 kg mass. Its description of ignition operation does not constitute proof that a proposed replacement meets those requirements.