# Proposed AD FAA-2006-24199: Airbus Model A318, A319, A320, and A321 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-18-06
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 27, 2006, 71 FR 15065
- Comments due: April 26, 2006
- Became: [AD 2006-18-06](https://openairdocs.org/ad/2006-18-06)
- Docket: FAA-2006-24199 (https://www.regulations.gov/docket/FAA-2006-24199, where comments are filed)
- Project: 2006-NM-025-AD
- FR document: E6-4409
- Official PDF: https://openairdocs.org/files/sha256/e5/7a/e57acc6e24233d543dee0e77a6e159d379ba7db07673d382e0a72238cf901a6d (from https://www.govinfo.gov/content/pkg/FR-2006-03-27/pdf/E6-4409.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/03/27/E6-4409/airworthiness-directives-airbus-model-a318-a319-a320-and-a321-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E7DA463DCF89CA138625713E006C923F.0001
- Page: https://openairdocs.org/proposed/FAA-2006-24199

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Model A318, A319, A320, and A321 airplanes. This proposed AD would require revising the Limitations section of the airplane flight manual (AFM); performing a one-time hardness test of certain ribs of the left- and right-hand engine pylons, as applicable, which would terminate the AFM limitations; and performing related corrective actions if necessary.

This proposed AD results from a report that certain stainless steel ribs installed in the engine pylon may not have been heat-treated during manufacture, which could result in significantly reduced structural integrity of the pylon. We are proposing this AD to detect and correct reduced structural integrity of the engine pylon, which could lead to separation of the engine from the airplane.

## Notices in this docket

- Mar 27, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-4409, comments due Apr 26, 2006 (https://www.federalregister.gov/documents/2006/03/27/E6-4409/airworthiness-directives-airbus-model-a318-a319-a320-and-a321-airplanes)

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