All insulated cargo tanks, except MC 330, MC 331, MC 338 · Internal Visual Inspection

For All insulated cargo tanks, except MC 330, MC 331, MC 338, test or inspection is Internal Visual Inspection; interval is 1 year; regulation section is 49 CFR § 180.407, recorded from its source on 2026-08-10; source re-checked 2026-09-30.

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

Internal Visual Inspection: | | | All insulated cargo tanks, except MC 330, MC 331, MC 338 (see Note 4) | September 1, 1991 | 1 year.

— law.cornell.edu, retrieved 2026-08-10

Source

• law.cornell.eduhttps://www.law.cornell.edu/cfr/text/49/180.407

Last verified against source: 2026-09-30. Due for re-check by 2027-09-30. This page as Markdown · OKF bundle · full dataset as JSON.