C5-22704. Control of Air Pollution From Aircraft and Aircraft Engines; Emission Standards and Test Procedures

[Federal Register Volume 70, Number 226 (Friday, November 25, 2005)]
[Corrections]
[Page 71191]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: C5-22704]



ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 87

[OAR-2002-0030; FRL-7997-3]
RIN 2060-AK01


Control of Air Pollution From Aircraft and Aircraft Engines; 
Emission Standards and Test Procedures

Correction

    In rule document 05-22704 beginning on page 69664 in the issue of 
Thursday, November 17, 2005 make the following corrections:
    1. On page 69679, the following text which should have made up 
footnote 90's second and third paragraphs was mistakenly inserted in 
the first and second columns:
    (The above reference for the fleet fraction is BACK Aviation 
Solutions, http://www.backaviation.com/Information--Services/
default.htm. The domestic flight information is based on SAGE, the 
System for Assessing Aviation Emissions. SAGE is an FAA model that 
estimates aircraft emissions through the full flight profile using non-
proprietary input data, such as BACK, FAA's Enhanced Traffic Management 
System (ETMS), and the Official Airline Guide (OAG). The year 2000 air 
traffic movements database portion of SAGE was used to estimate the 
number of flights using the subject engines.)
    2. On page 69680, the following footnotes were omitted from the 
table:
    \a\119 out of 159 (75 percent) of the in-production engines have 
greater than 10 percent margin to the proposed (or CAEP/4) 
NOx standards. 78 (49 percent) of the engines have more than 
20 percent margin. 24 (15 percent) of the engines have greater than 30 
percent margin. (120 of 159 (75 percent) of the in-production engines 
have margin to the CAEP/6 NOx standards, which generally 
represent about a 12 percent increase in stringency from today's 
standards.)
    \b\Source: International Civil Aviation Organization (ICAO), 
Aircraft Engine Exhaust Emissions Data Bank, July 26 2004. This data 
bank is available at http://www.caa.co.uk/default.aspx?categoryid=702 
&pagetype=90. In addition, a copy of tables including data of engine 
NOx emissions from the ICAO data bank and their margin to 
today's NOx standards and the CAEP/6 NOx 
standards can be found in Docket OAR-2002-0030.

[FR Doc. C5-22704 Filed 11-23-05; 8:45 am]
BILLING CODE 1505-01-D