Progressive inspection
For Progressive inspection, interval is within each 12 calendar months; applies to is aircraft; regulation section is § 91.409, verified against its source on 2026-08-06.
- Inspection or test item
- Progressive inspection verified
- Interval
- within each 12 calendar months verified
- Applies to
- aircraft verified
- Regulation section
- § 91.409 verified
What the source says
The frequency and detail of the progressive inspection shall provide for the complete inspection of the aircraft within each 12 calendar months and be consistent with the manufacturer's recommendations, field service experience, and the kind of operation in which the aircraft is engaged.
— ecfr.gov, retrieved 2026-08-06
Source
- ecfr.govhttps://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-14.xml?part=91§ion=91.409