Off-Road Large Spark-Ignition (Gasoline and LPG) Equipment Activities

This page last reviewed November 09, 2015


Off-Road Large Spark-Ignition Equipment

Guidance Documents and Advisories



(All documents are provided in Adobe Acrobat (PDF) unless otherwise indicated.)

Implementation advisories concerning the Off-Road Large Spark-Ignition Equipment regulation:

  • 08-01: Delay in Enforcement of first LSI Compliance Date. Allow Purchase Orders into Flee t Average Calculation.

  • 08-02: Exclusion of Gasoline-Fueled Ground Support Equipment from the LSI Fleet Adverage Calculation.

  • 08-03: Exclude from the fleet average calculation fully controlled late model year LSI equipment fleets and LSI equipment with engines greater than three liters in displacement ; Extend deadline for use of purchase orders in the fleet average calculations.

  • Mail-Out #MSC 09-44: EXCLUSION OF GASOLINE-FUELED AIRPORT GROUND SUPPORT EQUIPMENT FROM THE LARGE SPARK IGNITION (LSI) ENGINE FLEET AVERAGE REQUIREMENTS

  • Mail-Out #MSC 09-45: INCLUSION OF ELECTRIC EQUIPMENT OF LESS THAN 19 KILOWATTS IN LARGE SPARK IGNITION (LSI) FLEET AVERAGE CALCULATIONS

  • Mail-Out #MSC 10-08: EXCLUSION OF RETIRED LARGE SPARK IGNITION (LSI) ENGINE EQUIPMENT FROM FLEET SIZE DETERMINATIONS AND FLEET AVERAGE CALCULATIONS

  • Mail-Out #MSC 10-15: EXCLUSION OF GREATER THAN THREE LITER DISPLACEMENT LARGE SPARK IGNITION (LSI) ENGINE EQUIPMENT FROM THE LSI FLEET AVERAGE CALCULATIONS UNTIL APRIL 16, 2011

  • Mail-Out #MSC 10-16: EXCLUSION OF FULLY CONTROLLED LATE MODEL YEAR LARGE SPARK IGNITION (LSI) ENGINE EQUIPMENT FROM THE LSI FLEET AVERAGE CALCULATIONS UNTIL APRIL 16, 2011

  • Mail-Out #MSC 11-20: EXCLUSION OF GREATER THAN THREE LITER DISPLACEMENT LARGE SPARK IGNITION (LSI ) ENGINE EQUIPMENT FROM THE LSI FLEET AVERAGE CALCULATIONS UNTIL APRIL 16, 2012

  • Mail-Out #MSC 11-21: EXCLUSION OF FULLY CONTROLLED LATE MODEL YEAR LARGE SPARK IGNITION (LSI) ENGINE EQUIPMENT FROM THE LSI FLEET AVERAGE CALCULATIONS UNTIL APRIL 16, 2012

  • Mail-Out #MSC 11-22: EXCLUSION OF LIMITED HOURS OF USE EQUIPMENT FROM THE LARGE SPARK IGNITION (LSI) ENGINE FLEET AVERAGE REQUIREMENTS

Enforcement advisories concerning the Off-Road Spark-Ignition Equipment regulation:

  • Advisory 441: ENFORCEMENT OF THE IN-USE OFF-ROAD LARGE SPARK-IGNITION ENGINE FLEET REGULATION




preload