# Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes
> **Rule** · Final rule. · Published 1999-11-19 · Effective 1999-12-27 · 64 FR 63190
## Document
- **Document number:** 99-30055
- **Category:** airworthiness
- **Manufacturer:** McDonnell Douglas Model MD-11 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 63190
- **Publication date:** 1999-11-19
- **Effective date:** 1999-12-27
- **FAA docket:** Docket No. 99-NM-167-AD
## Abstract

This amendment supersedes two existing airworthiness directives (AD), applicable to certain McDonnell Douglas Model MD-11 series airplanes, that currently require inspections in the lower center cargo compartment at frame 1681 to verify that a certain bracket and a certain open face nylon clamp were installed to a specific wire bundle support and to detect damage of the subject wire bundle; and corrective actions, if necessary. This amendment requires a similar inspection and corrective actions required by the existing AD's and removes certain airplanes from the applicability of the existing AD's. This amendment also adds a requirement to install a wire assembly support bracket, clamp, and spacer, or revise the wire assembly support bracket and clamp installation; as applicable. This amendment is prompted by an incident in which the insulation blanket in the lower center cargo compartment was found to be burnt due to a missing wiring harness support bracket/clamp on a wire bundle. The actions specified by this AD are intended to prevent sparks, smoke, and possible fire in the lower center cargo compartment.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/11/19/99-30055/airworthiness-directives-mcdonnell-douglas-model-md-11-series-airplanes)
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