# Proposed AD 2000-NM-322-AD: McDonnell Douglas Model DC-9-81, -82, -83, and -87 Series Airplanes, and MD-88 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-12-22
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 20, 2001, 66 FR 15666
- Comments due: May 4, 2001
- Became: [AD 2001-12-22](https://openairdocs.org/ad/2001-12-22)
- Docket: 2000-NM-322-AD
- FR document: 01-6791
- Official PDF: https://openairdocs.org/files/sha256/da/e2/dae2a5c1c7bf6eb3e8ce08ad2278612f2db5677706fc75d39d2cfffab1887b15 (from https://www.govinfo.gov/content/pkg/FR-2001-03-20/pdf/01-6791.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/03/20/01-6791/airworthiness-directives-mcdonnell-douglas-model-dc-9-81--82--83-and--87-series-airplanes-and-md-88
- Page: https://openairdocs.org/proposed/2000-NM-322-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-9-81, -82, -83, and -87 Series Airplanes, and MD-88 airplanes. This proposal would require revising the wiring of the selective calling (SELCAL) system. This action is necessary to prevent inadvertent very high frequency transmissions and subsequent loss of radio communications for airplane and/or airport operations; and to prevent inadvertent high frequency transmissions and subsequent electrical shock to ground service personnel and/or damage to the airplane during fueling operations or fuel tank maintenance. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Mar 20, 2001: Notice of proposed rulemaking (NPRM). (first notice), FR document 01-6791, comments due May 4, 2001 (https://www.federalregister.gov/documents/2001/03/20/01-6791/airworthiness-directives-mcdonnell-douglas-model-dc-9-81--82--83-and--87-series-airplanes-and-md-88)

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