50 CFR § 600.1511 - Changes or modifications to type-approvals.

---
identifier: "/us/cfr/t50/s600.1511"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "50 CFR § 600.1511 - Changes or modifications to type-approvals."
title_number: 50
title_name: "Wildlife and Fisheries"
section_number: "600.1511"
section_name: "Changes or modifications to type-approvals."
chapter_name: "FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE"
part_number: "600"
part_name: "MAGNUSON-STEVENS ACT PROVISIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 561 and 16 U.S.C. 1801"
regulatory_source: "61 FR 32540, June 24, 1996, unless otherwise noted."
cfr_part: "600"
---


# 600.1511 Changes or modifications to type-approvals.

Type-approval holders must notify NMFS Office of Law Enforcement (OLE) in writing no later than 2 days following modification to or replacement of any functional component or piece of their type-approved EMTU, EMTU-C, or MTU configuration, MCS, or bundle. If the changes are substantial, NMFS OLE will notify the type-approval holder in writing within 60 calendar days that an amended type-approval is required or that NMFS will initiate the type-approval revocation process.