# Airworthiness Directives; Airbus SAS Airplanes
> **Rule** · Final rule. · Published 2019-12-12 · Effective 2020-01-16 · 84 FR 67832
## Document
- **Document number:** 2019-26703
- **Category:** airworthiness
- **Manufacturer:** Airbus SAS
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 84 FR 67832
- **Publication date:** 2019-12-12
- **Effective date:** 2020-01-16
- **FAA docket:** Docket No. FAA-2019-0443
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A320-251N and A321-253N airplanes. This AD was prompted by reports of cracks on the pylon block seals. This AD requires replacement of the pylon block seals, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/12/12/2019-26703/airworthiness-directives-airbus-sas-airplanes)
---
*AI Analytics · CC0 1.0*