# Proposed AD FAA-2016-9518: Airbus Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-16-12
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 28, 2016, 81 FR 95531
- Comments due: February 13, 2017
- Became: [AD 2017-16-12](https://openairdocs.org/ad/2017-16-12)
- Docket: FAA-2016-9518 (https://www.regulations.gov/docket/FAA-2016-9518, where comments are filed)
- Project: 2015-NM-091-AD
- FR document: 2016-30610
- Official PDF: https://openairdocs.org/files/sha256/65/b4/65b4c35ec319d9497fc7732c98f702464a878adc0e67dc87292f130f8c8cdad5 (from https://www.govinfo.gov/content/pkg/FR-2016-12-28/pdf/2016-30610.pdf)
- Federal Register: https://www.federalregister.gov/documents/2016/12/28/2016-30610/airworthiness-directives-airbus-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B8B09301DBB7521986258097005BC815.0001
- Page: https://openairdocs.org/proposed/FAA-2016-9518

## Summary

We propose to supersede Airworthiness Directive (AD) 2013-19- 09 and AD 2014-25-51, for all Airbus Model A318, A319, A320, and A321 series airplanes. AD 2013-19-09 currently requires replacing Angle of Attack (AOA) sensor conic plates with AOA sensor flat plates. AD 2014- 25-51 currently requires revising the airplane flight manual (AFM) to advise the flightcrew of emergency procedures for abnormal Alpha Protection (Alpha Prot). Since we issued AD 2013-19-09 and AD 2014-25- 51, we have received a report indicating that certain AOA sensors appear to have a greater susceptibility to adverse environmental conditions. This proposed AD would require replacing certain AOA sensors; and doing a detailed inspection and a functional heating test for discrepancies on certain AOA sensors, and replacing the affected AOA sensors. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Dec 28, 2016: Notice of proposed rulemaking (NPRM). (first notice), FR document 2016-30610, comments due Feb 13, 2017 (https://www.federalregister.gov/documents/2016/12/28/2016-30610/airworthiness-directives-airbus-airplanes)

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