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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 PLUGS, AIRCRAFT ENGINE

1961-12-15
HISTORICAL
AS28A
This specification covers aircraft reciprocating engine shielded and unshielded spark plugs.
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