Regulations last checked for updates: Feb 07, 2026

Title 49 - Transportation last revised: Feb 03, 2026
All TitlesTitle 49Chapter IIPart 227Appendix Appendix E - Appendix E to Part 227—Use of Insert Earphones for Audiometric Testing
Collapse to view onlyAppendix Appendix E - Appendix E to Part 227—Use of Insert Earphones for Audiometric Testing
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authority: 49 U.S.C. 20103,20103,20166,20701,21301,21302,21304; 28 U.S.C. 2461 note; and 49 CFR 1.89
source: 71 FR 63123, Oct. 27, 2006, unless otherwise noted.
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