Standard Spark Plug Rating Calibration 1998-08-01 CURRENT ARP890A Procedure for obtaining the corrected heat-rating values (indicated mean effective pressure, IMEP) of spark plugs rated in the SAE 17.6 cubic inch rating engine (SAE AS840).
Standard Spark Energy Measurement, Alternative Methods 1998-08-01 CURRENT AIR951A Parameters to consider and various methods of measuring spark energy of aviation ignition systems.
Standard SPARK PLUGS, AIRCRAFT ENGINE - 18 MM 1942-03-01 HISTORICAL AS28 This standard covers two basic types of spark plugs as follows:
Standard SPARK PLUGS, AIRCRAFT ENGINE 1961-12-15 HISTORICAL AS28A This specification covers aircraft reciprocating engine shielded and unshielded spark plugs.
Standard SPARK PLUGS, AIRCRAFT ENGINE 1992-11-01 CURRENT AS28B This specification covers reciprocating engine shielded and unshielded spark plugs.