# 2026-22899: FAA Proposes Crack Checks for Bombardier Wing and Tail Structures

2026-22899, Airworthiness Directives; Bombardier, Inc., Airplanes, is a Federal Register proposed rule from Transportation Department, Federal Aviation Administration published 2026-11-10, effective The FAA must receive comments on this proposed AD by December 28, 2026.; PRIA reads it as touching household money (as of 2026-11-11).

- Canonical: https://policyrisk.com/federal-register/2026-22899
- As of: 2026-11-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-22899
- Title: Airworthiness Directives; Bombardier, Inc., Airplanes
- Type: Proposed Rule
- Agencies: Transportation Department; Federal Aviation Administration
- Citation: 91 FR 72467
- Published: 2026-11-10
- Effective: The FAA must receive comments on this proposed AD by December 28, 2026.
- Comments close: 2026-12-28
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: 2120-AA64
- Last updated: 2026-11-11

## In one line

FAA Proposes Crack Checks for Bombardier Wing and Tail Structures

## Summary

The FAA wants Bombardier CL-600-2B16 (604 Variants) airplane owners to check for cracks in key wing and stabilizer parts to keep flights safe. If cracks are found, repairs must be done quickly. Comments on this plan are open until December 28, 2026, so affected operators should prepare for inspections and possible fixes soon.

## Abstract

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (604 Variants) airplanes. This proposed AD was prompted by reports of cracks being found on the lower wing plank at the rear spar wing station (WS) 59 to WS 65 web and/or flange. This proposed AD would require inspecting the lower wing plank rear spar web and lower flange, the forward surface of the pressure bulkhead frame under the stiffeners, and the vertical stabilizer front spar to frame attachment fitting lower legs for cracks, and repair or rectification if applicable. The FAA is proposing this AD to address the unsafe condition on these products.

## Effects PRIA read

- Mandatory crack inspections and repairs: cost, high. If you operate a Bombardier CL-600-2B16 (604 Variants) airplane, the FAA would require inspections for cracks of the lower wing plank rear spar web and lower flange (wing station 59 to 65), the forward surface of the pressure bulkhead frame under the stiffeners between left buttock line 9.00 and ri…
- FAA cost estimate per airplane and nationwide total: cost, high. The FAA estimates this proposed AD would affect 201 U.S.-registered airplanes. The FAA estimates up to 24 work-hours per airplane at $85 per hour (up to $2,040 per airplane) and $0 parts cost, for a U.S. fleet total of up to $410,040. The FAA has not provided definitive data on the cost of any on-c…
- FAA removes manufacturer reporting requirement: benefit, low. Although Transport Canada AD CF-2024-47 specifies submitting certain information to the manufacturer, this FAA proposed AD explicitly does not include that reporting requirement. Operators are not required by this FAA AD to send those reports to the manufacturer.

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## Sources
- [2026-22899 on federalregister.gov](https://www.federalregister.gov/documents/2026/11/10/2026-22899/airworthiness-directives-bombardier-inc-airplanes)
- [2026-22899 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-11-10/pdf/2026-22899.pdf)

## Related
- [Previous: 2026-22860, Revision of Regulations for Planning, Programming, Budgeting](https://policyrisk.com/federal-register/2026-22860)
- [Next: 2026-22903, Unemployment Insurance Program National Minimum Weekly Work Search Requirements](https://policyrisk.com/federal-register/2026-22903)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-22899 (as of 2026-11-11).