# Airworthiness Directives; Boeing Model 747SP Series Airplanes Modified by Supplemental Type Certificate ST09097AC-D
> **Rule** · Final rule. · Published 2001-07-12 · Effective 2001-08-16 · 66 FR 36449
## Document
- **Document number:** 01-17162
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 747SP Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 66 FR 36449
- **Publication date:** 2001-07-12
- **Effective date:** 2001-08-16
- **FAA docket:** Docket No. 2000-NM-244-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model 747SP series airplanes modified by Supplemental Type Certificate (STC) ST09097AC-D, that requires modifying the passenger entertainment system (PES) installed by that STC and revising the Airplane Flight Manual. This action is necessary to ensure that the flight crew is able to remove electrical power from the PES when necessary and is advised of appropriate procedures for such action. Inability to remove power from the PES during a non-normal or emergency situation could result in inability to control smoke or fumes in the airplane flight deck or cabin. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/07/12/01-17162/airworthiness-directives-boeing-model-747sp-series-airplanes-modified-by-supplemental-type)
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