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

---
identifier: "/us/fr/C1-2012-13828"
source: "fr"
legal_status: "authoritative_unofficial"
title: "Control of Air Pollution From Aircraft and Aircraft Engines; Emission Standards and Test Procedures"
title_number: 0
title_name: "Federal Register"
section_number: "C1-2012-13828"
section_name: "Control of Air Pollution From Aircraft and Aircraft Engines; Emission Standards and Test Procedures"
positive_law: false
currency: "2012-10-31"
last_updated: "2012-10-31"
format_version: "1.1.0"
generator: "[email protected]"
agency: "Environmental Protection Agency"
document_number: "C1-2012-13828"
document_type: "rule"
publication_date: "2012-10-31"
agencies:
  - "Environmental Protection Agency"
cfr_references:
  - "40 CFR Part 87"
rin: "2060-AO70"
fr_citation: "77 FR 65823"
fr_volume: 77
docket_ids:
  - "EPA-HQ-OAR-2010-0687"
  - "FRL-9678-1"
---


#  [Corrected]

**Correction**

In rule document 2012-13828 appearing on pages 36341-36386 in the issue of Monday, June 18, 2012, make the following corrections:

**40 CFR Part 87**

§ 87.23

1. On page 36382, in § 87.23, the table titled “Table 3 to § 87.23—Tier 6 NO <sub>X</sub> Standards for New Subsonic Turbofan or Turbojet Engines with Rated Output Above 26.7 kN” should read as set forth below:

| If the rated pressure ratio is— | and the rated output (in kN) is— | The NO
                                    
                                     emission standard (in g/kN rated output) is— |
| --- | --- | --- |
| rPR ≤ 30 | 26.7 < rO ≤ 89 | 38.5486 + 1.6823·rPR - 0.2453·rO − 0.00308·rPR·rO |
|  | rO > 89 | 16.72 + 1.4080·rPR |
| 30 < rPR < 82.6 | 26.7 < rO ≤ 89 | 46.1600 + 1.4286·rPR − 0.5303·rO + 0.00642·rPR·rO |
|  | rO > 89 | −1.04 + 2.0·rPR |
| rPR ≥ 82.6 | all | 32 + 1.6·rPR |

2. On page 36383, in § 87.23, the table titled “Table 4 to § 87.23—Tier 8 NO <sub>X</sub> Standards for New Subsonic Turbofan or Turbojet Engines with Rated Output Above 26.7 kN” should read as set forth below:

| If the rated pressure ratio is— | and the rated output (in kN) is— | The NO
                                    
                                     emission standard (in g/kN rated output) is— |
| --- | --- | --- |
| rPR ≤ 30 | 26.7 < rO ≤ 89 | 40.052 + 1.5681·rPR − 0.3615·rO - 0.0018·rPR·rO |
|  | rO > 89 | 7.88 + 1.4080·rPR |
| 30 < rPR < 104.7 | 26.7 < rO ≤ 89 | 41.9435 + 1.505·rPR − 0.5823·rO + 0.005562·rPR·rO |
|  | rO > 89 | −9.88 + 2.0·rPR |
| rPR ≥ 104.7 | all | 32 + 1.6·rPR |