# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2021-06-24 · Effective 2021-07-29 · 86 FR 33110
## Document
- **Document number:** 2021-13125
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 33110
- **Publication date:** 2021-06-24
- **Effective date:** 2021-07-29
- **FAA docket:** Docket No. FAA-2021-0017
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-8 and 737-9 airplanes. This AD was prompted by a report that during refueling of the right main tank, if there is a failure of the automatic shutoff system, the refueling panel does not provide the required indication that the automatic shutoff has failed. This AD requires installing a new fuel quantity processor unit (FQPU) and doing an FQPU software check. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/06/24/2021-13125/airworthiness-directives-the-boeing-company-airplanes)
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