# Proposed AD FAA-2007-28988: Boeing Model 747-400 and -400D Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-15-12
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 16, 2007, 72 FR 45968
- Comments due: October 1, 2007
- Became: [AD 2009-15-12](https://openairdocs.org/ad/2009-15-12)
- Docket: FAA-2007-28988 (https://www.regulations.gov/docket/FAA-2007-28988, where comments are filed)
- Project: 2007-NM-047-AD
- FR document: E7-16115
- Official PDF: https://openairdocs.org/files/sha256/68/fc/68fcd871a8e780dccf90b7917381b78da4ea91e087211ee5e4db525b5830a847 (from https://www.govinfo.gov/content/pkg/FR-2007-08-16/pdf/E7-16115.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/08/16/E7-16115/airworthiness-directives-boeing-model-747-400-and--400d-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F8649A877A1E7F0586257339005107B7.0001
- Page: https://openairdocs.org/proposed/FAA-2007-28988

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 747-400 and -400D series airplanes. This proposed AD would require installing new relays to allow the flightcrew to turn off electrical power to the in-flight entertainment (IFE) system and other non-essential passenger cabin systems through the left and right utility bus switches, and other specified actions. This proposed AD results from an IFE systems review. We are proposing this AD to ensure that the flightcrew is able to turn off electrical power to the IFE system and other non-essential passenger cabin systems through utility bus switches in the flight compartment, in the event of smoke or fumes. The flightcrew's inability to turn off electrical power to the IFE system and other non-essential passenger cabin systems could result in the inability to control smoke or fumes in the airplane flight deck or passenger cabin during a non-normal or emergency situation.

## Notices in this docket

- Aug 16, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-16115, comments due Oct 1, 2007 (https://www.federalregister.gov/documents/2007/08/16/E7-16115/airworthiness-directives-boeing-model-747-400-and--400d-series-airplanes)

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