# Proposed AD FAA-2009-0165: Hawker Beechcraft Corporation (Type Certificate Previously Held by Raytheon Aircraft Company) Models 1900, 1900C, and 1900D Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-23-03
- Products: Hawker Beechcraft
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 27, 2009, 74 FR 8885
- Comments due: April 28, 2009
- Became: [AD 2009-23-03](https://openairdocs.org/ad/2009-23-03)
- Docket: FAA-2009-0165 (https://www.regulations.gov/docket/FAA-2009-0165, where comments are filed)
- Project: 2008-CE-055-AD
- FR document: E9-4213
- Official PDF: https://openairdocs.org/files/sha256/38/99/3899ff99cbc317ae29c4f1218f03634b48c6252e464febe26777ab83c695be2c (from https://www.govinfo.gov/content/pkg/FR-2009-02-27/pdf/E9-4213.pdf)
- Federal Register: https://www.federalregister.gov/documents/2009/02/27/E9-4213/airworthiness-directives-hawker-beechcraft-corporation-type-certificate-previously-held-by-raytheon
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E7349DA99EDBA7028625756A0057E6B7.0001
- Page: https://openairdocs.org/proposed/FAA-2009-0165

## Summary

We propose to supersede Airworthiness Directive (AD) 2006-24- 11, which applies to certain Hawker Beechcraft Corporation (Hawker) (Type Certificate previously held by Raytheon Aircraft Company) Models 1900, 1900C, and 1900D airplanes. AD 2006-24-11 currently requires you to repetitively inspect the forward, vertical, and aft flanges of both the left and right wing rear spar lower caps for cracks, repair any cracks found, and report the inspection results to the manufacturer. Since we issued AD 2006-24-11, the manufacturer has developed a modification kit to install on the wing rear spar lower caps that would terminate the 200-hour repetitive inspection required in AD 2006-24-11. Consequently, this proposed AD would require installing the new modification kits on the wing rear spar lower caps and would terminate the repetitive inspections required in AD 2006-24-11 when the kits are installed. We are proposing this AD to prevent fatigue cracks in the wing rear spar lower caps, which could result in fatigue failure of the wing rear spar lower caps. A rear spar failure could result in complete wing failure and the wing separating from the airplane.

## Notices in this docket

- Feb 27, 2009: Notice of proposed rulemaking (NPRM). (first notice), FR document E9-4213, comments due Apr 28, 2009 (https://www.federalregister.gov/documents/2009/02/27/E9-4213/airworthiness-directives-hawker-beechcraft-corporation-type-certificate-previously-held-by-raytheon)

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