# Airworthiness Directives; Boeing Model 747 Series Airplanes Powered By Pratt & Whitney JT9D-3 and -7 Series Engines
> **Rule** · Final rule; request for comments. · Published 2000-11-21 · Effective 2000-12-06 · 65 FR 69862
## Document
- **Document number:** 00-29215
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 747 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 65 FR 69862
- **Publication date:** 2000-11-21
- **Effective date:** 2000-12-06
- **FAA docket:** Docket No. 2000-NM-329-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 747 series airplanes. This action requires repetitive inspections and torque checks of the hanger fittings and strut forward bulkhead of the forward engine mount and adjacent support structure, and corrective actions, if necessary. This action also provides for optional terminating action for the repetitive inspections and checks. This action is necessary to detect and correct loose fasteners and associated damage to the hanger fittings and bulkhead of the forward engine mount, which could result in separation of the engine from the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/11/21/00-29215/airworthiness-directives-boeing-model-747-series-airplanes-powered-by-pratt-and-whitney-jt9d-3-and)
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