# Airworthiness Directives; Boeing Model 737 Series Airplanes
> **Rule** · Final rule; correction. · Published 1997-04-22 · Effective 1997-04-09 · 62 FR 19483
## Document
- **Document number:** 97-10317
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 737 Series
- **Type:** Rule
- **Action:** Final rule; correction.
- **Citation:** 62 FR 19483
- **Publication date:** 1997-04-22
- **Effective date:** 1997-04-09
- **FAA docket:** Docket No. 96-NM-146-AD
## Abstract

This document corrects a typographical error that appeared in airworthiness directive (AD) 97-05-09 that was published in the Federal Register on March 5, 1997 (62 FR 9925). The typographical error resulted in the omission of a serial number of a power control unit (PCU) from NOTE 2 of the AD. This AD is applicable to certain Boeing Model 737 series airplanes and requires replacement of the flow restrictors of the aileron and elevator PCU's with new flow restrictors.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/04/22/97-10317/airworthiness-directives-boeing-model-737-series-airplanes)
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