# Proposed AD FAA-2005-20755: Airbus Model A321 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-13-39
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 30, 2005, 70 FR 16167
- Comments due: April 29, 2005
- Became: [AD 2005-13-39](https://openairdocs.org/ad/2005-13-39)
- Docket: FAA-2005-20755 (https://www.regulations.gov/docket/FAA-2005-20755, where comments are filed)
- Project: 2004-NM-244-AD
- FR document: 05-6243
- Official PDF: https://openairdocs.org/files/sha256/6f/02/6f02cf7963b3479df94a7cf6df5500ba93c45abfb8127871a9c239a80016e108 (from https://www.govinfo.gov/content/pkg/FR-2005-03-30/pdf/05-6243.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/03/30/05-6243/airworthiness-directives-airbus-model-a321-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FF8B4D7E12EC227786256FD4007252C2.0001
- Page: https://openairdocs.org/proposed/FAA-2005-20755

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) that applies to all Airbus Model A321 series airplanes. The existing AD currently requires revising the Limitations section of the airplane flight manual to include an instruction to use Flap 3 for landing when performing an approach in conditions of moderate to severe icing, significant crosswind (i.e., crosswinds greater than 20 knots, gust included), or moderate to severe turbulence. This proposed AD would require replacing existing elevator and aileron computers (ELAC) with ELACs having either L83 or L91 software, as applicable, which would terminate the requirements of the existing AD. This proposed AD would also require a related concurrent action. In addition, this proposed AD would revise the applicability by removing airplanes with these ELAC software standards incorporated in production. This proposed AD is prompted by issuance of mandatory continuing airworthiness information by a civil airworthiness authority. We are proposing this AD to prevent roll oscillations during approach and landing in certain icing, crosswind, and turbulent conditions, which could result in reduced controllability of the airplane.

## Notices in this docket

- Mar 30, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-6243, comments due Apr 29, 2005 (https://www.federalregister.gov/documents/2005/03/30/05-6243/airworthiness-directives-airbus-model-a321-series-airplanes)

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