Aircraft Engines - Supplemental Information Related to Exhaust Emissions

SUBJECT: Submission of Required Exhaust Emission Data Reports by Aircraft Engine

Manufacturers

Dear Manufacturer:

This letter is to inform you of your obligation to submit various required emission data to EPA under our regulations covering your industry, and to inform you of EPA’s future plans to ensure industry compliance with these requirements. These requirements arose out of the Control of Air Pollution from Aircraft and Aircraft Engines; Final Emission Standards and Test Procedures, promulgated in XXX 2012 (XX Fed. Reg. XXXX), codified at 40 CFR Part 87.

40 CFR § 87.40 requires a single, integrated report that incorporates the contents of the greenhouse (GHG) compliance reports that are separately required under 40 CFR § 87.64. The submission of those compliance reports were the subject of an EPA letter to you entitled, “Submission of Required Reports by Aircraft Engine Manufacturers,” reference number CISD-11-1, dated January 7, 2011. Compliance with this single, integrated report fulfills your reporting obligation under 40 CFR § 87.64. The reporting field names associated with the GHG requirements have been identified in the template described below for your convenience.

Under EPA regulations covering aircraft turbine engines, manufacturers holding U.S. FAA type certificates are required to submit specific exhaust emission data to EPA to comply with the terms of the reporting requirements. To promote full manufacturer compliance in this area, we have created a template for manufacturers to use that has been posted at http://www.epa.gov/otaq/xxxxxx.htm. All completed templates should be emailed to aircraft_engine_reporting@epa.gov by February 28 of each year.

Additionally, EPA will be actively monitoring the compliance status for all reports you are required to file.

Any questions you may have regarding reporting requirements for your industry should

be directed to aircraft_engine_reporting@epa.gov.

Sincerely,

Byron Bunker, Director

Compliance and Innovative Strategies Division

Office of Transportation and Air Quality