# 2026-08322: Textron Airplanes Face New Tail Inspection Rules by June 2026

2026-08322, Airworthiness Directives; Textron Aviation Inc. Airplanes, is a Federal Register proposed rule from Transportation Department, Federal Aviation Administration published 2026-04-29, effective The FAA must receive comments on this proposed AD by June 15, 2026.; PRIA reads it as touching household money (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2026-08322
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-08322
- Title: Airworthiness Directives; Textron Aviation Inc. Airplanes
- Type: Proposed Rule
- Agencies: Transportation Department; Federal Aviation Administration
- Citation: 91 FR 23023
- Published: 2026-04-29
- Effective: The FAA must receive comments on this proposed AD by June 15, 2026.
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: 2120-AA64
- Last updated: 2026-06-11

## In one line

Textron Airplanes Face New Tail Inspection Rules by June 2026

## Summary

If you own or work on certain Textron Aviation Model 408 airplanes, get ready for some important updates! The FAA wants you to add new inspections for parts of the airplane’s tail to keep things safe. You’ll need to update your maintenance manuals by June 15, 2026, and while this might cost some time and money, it’s all about flying safer and smarter.

## Abstract

The FAA proposes to adopt a new airworthiness directive (AD) for certain Textron Aviation, Inc., Model 408 airplanes. This proposed AD was prompted by the manufacturer's revision of the aircraft maintenance manual (AMM) to add a detailed inspection for the horizontal stabilizer spar, and change the airplane serial effectivity for the vertical stabilizer spar detailed inspection. This proposed AD would require revising the Airworthiness Limitations Section (ALS) of the existing AMM or instructions for continued airworthiness (ICA) and the existing approved maintenance or inspection program, as applicable. The FAA is proposing this AD to address the unsafe condition on these products.

## Effects PRIA read

- You must update maintenance manuals: cost, low. If you own or maintain Textron Model 408 airplanes (serial numbers -0012 through -0051), you must revise the Airworthiness Limitations Section (ALS) of the aircraft maintenance manual or instructions for continued airworthiness and the approved maintenance/inspection program within 150 hours time-i…
- New recurring stabilizer inspections required: cost, low. You will need to incorporate detailed inspections of the horizontal and vertical stabilizer spars at 1,600 flight-hour intervals for affected serials: the horizontal stabilizer spar detailed inspection applies to serials -0012 through -0040, and the vertical stabilizer spar detailed inspection appl…
- FAA estimates small one-time paperwork cost: cost, low. The FAA estimates this proposed AD would affect 28 U.S.-registered Model 408 airplanes and that the cost to revise the ALS is 1 work-hour at $85 per airplane, for a total estimated cost to U.S. operators of $2,380.
- Guidance available in Textron service letter: benefit, low. Textron Aviation Service Letter SL408-04-01 dated December 8, 2025 provides additional guidance for accomplishing the inspections and actions required by this AD.

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## Sources
- [2026-08322 on federalregister.gov](https://www.federalregister.gov/documents/2026/04/29/2026-08322/airworthiness-directives-textron-aviation-inc-airplanes)
- [2026-08322 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-04-29/pdf/2026-08322.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2026-08322 (as of 2026-06-11).