# Repairs and alterations.

**Citation:** 49 CFR 179.6  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

For procedure to be followed in making repairs or alterations, see appendix R of the AAR Specifications for Tank Cars (IBR, see § 171.7 of this subchapter).

[68 FR 75759, Dec. 31, 2003]

## Document text

For procedure to be followed in making repairs or alterations, see appendix R of the AAR Specifications for Tank Cars (IBR, see § 171.7 of this subchapter).

[68 FR 75759, Dec. 31, 2003]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-179.6>
- Source ID: `ecfr`
- SHA-256: `df4e1d82bb4711d9357cc599d43da542eeb1b72eff6962569447c60abc1c0289`
- Retrieved: 2026-08-20T05:46:20.606Z
- Exported: 2026-08-22T04:08:36.037Z
- Document slug: `49-cfr-179-6`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "179",
  "section": "179.6",
  "subpart": "Subpart A—Introduction, Approvals and Reports",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```