# Airworthiness Directives; McDonnell Douglas Model DC-9-80 Series Airplanes and Model MD-88 Airplanes
> **Rule** · Final rule; correction. · Published 1999-12-27 · Effective 1999-12-27 · 64 FR 72270
## Document
- **Document number:** 99-33444
- **Category:** airworthiness
- **Manufacturer:** McDonnell Douglas Model DC-9-80 Series
- **Type:** Rule
- **Action:** Final rule; correction.
- **Citation:** 64 FR 72270
- **Publication date:** 1999-12-27
- **Effective date:** 1999-12-27
- **FAA docket:** Docket No. 99-NM-05-AD
## Abstract

This document corrects information in an existing airworthiness directive (AD) that applies to certain McDonnell Douglas Model DC-9-80 series airplanes and Model MD-88 airplanes. That AD currently requires a one-time visual inspection to determine whether self-aligning nuts are installed at certain locations of the aft pressure bulkhead tee; and corrective actions, if necessary. This document corrects a typographical error in a service bulletin reference. This correction is necessary to ensure that the appropriate service information is used to accomplish the AD.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/12/27/99-33444/airworthiness-directives-mcdonnell-douglas-model-dc-9-80-series-airplanes-and-model-md-88-airplanes)
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