# Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes Equipped With General Electric (GE) CF6-80C2 Engines
> **Rule** · Final rule; request for comments. · Published 1997-10-28 · Effective 1997-11-12 · 62 FR 55728
## Document
- **Document number:** 97-28317
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 747 and 767 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 62 FR 55728
- **Publication date:** 1997-10-28
- **Effective date:** 1997-11-12
- **FAA docket:** Docket No. 97-NM-243-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 747 and 767 series airplanes. This action requires revising the FAA-approved Airplane Flight Manual (AFM) to prohibit the use of certain fuels, and either replacing the existing placard on the door of the fueling control panel with a new placard; or replacing all dribble flow fuel nozzles (DFFN) with standard fuel nozzles, which terminates the requirements for a placard and AFM revision. This amendment is prompted by a report of an engine flameout during certification testing due to the use of JP-4 or Jet B fuel. The actions specified in this AD are intended to prevent such engine flameouts and consequent engine shutdown.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/10/28/97-28317/airworthiness-directives-boeing-model-747-and-767-series-airplanes-equipped-with-general-electric-ge)
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