# Proposed AD FAA-2018-0271: Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-18-17
- Products: Saab AB, Saab Aeronautics
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 17, 2018, 83 FR 16792
- Comments due: June 1, 2018
- Became: [AD 2018-18-17](https://openairdocs.org/ad/2018-18-17)
- Docket: FAA-2018-0271 (https://www.regulations.gov/docket/FAA-2018-0271, where comments are filed)
- FR document: 2018-07636
- Official PDF: https://openairdocs.org/files/sha256/31/4b/314bd52f75d4dbb9745ec5f80bcef6f85499fd9a756417f16b35190477b9eb72 (from https://www.govinfo.gov/content/pkg/FR-2018-04-17/pdf/2018-07636.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/04/17/2018-07636/airworthiness-directives-saab-ab-saab-aeronautics-formerly-known-as-saab-ab-saab-aerosystems
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/30701B87DC1DFC4986258272004B6C1F.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0271

## Summary

We propose to supersede Airworthiness Directive (AD) 2016-13- 06, which applies to certain Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) and SAAB 340B airplanes. AD 2016-13-06 requires a revision of the applicable airplane flight manual (AFM), repetitive inspections of the horizontal stabilizer de-icing boots, and applicable corrective actions. Since we issued AD 2016-13-06, the manufacturer has developed an improved de-icing boot. This proposed AD would continue to require a revision of the applicable AFM, repetitive inspections of the horizontal stabilizer de-icing boots, and applicable corrective actions. This proposed AD would also require replacement of single stitched de-icing boots with improved double stitched boots, and re- identification of the modified horizontal stabilizer leading edge. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Apr 17, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-07636, comments due Jun 1, 2018 (https://www.federalregister.gov/documents/2018/04/17/2018-07636/airworthiness-directives-saab-ab-saab-aeronautics-formerly-known-as-saab-ab-saab-aerosystems)

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