# Proposed AD 99-NM-312-AD: Boeing Model 737-600, -700, and -800 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-06-15
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 18, 2000, 65 FR 56266
- Comments due: October 18, 2000
- Became: [AD 2001-06-15](https://openairdocs.org/ad/2001-06-15)
- Docket: 99-NM-312-AD
- FR document: 00-23854
- Official PDF: https://openairdocs.org/files/sha256/cc/00/cc002fd77e3ba057c35725579fafb27668b4d9d1e84c4615438dffde5d88d3ee (from https://www.govinfo.gov/content/pkg/FR-2000-09-18/pdf/00-23854.pdf)
- Federal Register: https://www.federalregister.gov/documents/2000/09/18/00-23854/airworthiness-directives-boeing-model-737-600--700-and--800-series-airplanes
- Page: https://openairdocs.org/proposed/99-NM-312-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 737-600, - 700, and -800 series airplanes. This proposal would require inspections of the fasteners in the elevator balance panel assemblies to detect various discrepancies; and corrective actions, if necessary. This proposal is prompted by a report that an elevator balance panel was found disconnected from the horizontal stabilizer due to the improper installation of fasteners during production. The actions specified by the proposed AD are intended to prevent jamming, restricting, or binding of the elevator control surfaces due to loose or missing fasteners, which could make the movement of the elevator difficult and decrease aerodynamic control of the airplane.

## Notices in this docket

- Sep 18, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-23854, comments due Oct 18, 2000 (https://www.federalregister.gov/documents/2000/09/18/00-23854/airworthiness-directives-boeing-model-737-600--700-and--800-series-airplanes)

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