# Proposed AD FAA-2007-0254: Boeing Model 777 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-02-05
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 28, 2007, 72 FR 67263
- Comments due: January 14, 2008
- Became: [AD 2009-02-05](https://openairdocs.org/ad/2009-02-05)
- Docket: FAA-2007-0254 (https://www.regulations.gov/docket/FAA-2007-0254, where comments are filed)
- Project: 2007-NM-209-AD
- FR document: E7-23117
- Official PDF: https://openairdocs.org/files/sha256/bf/17/bf175f4c9ec475e1220ad625998b9b207f9f015452c00ec2c1373a99a84bf2ab (from https://www.govinfo.gov/content/pkg/FR-2007-11-28/pdf/E7-23117.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/11/28/E7-23117/airworthiness-directives-boeing-model-777-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F692A25423223ABC862573A3004B4366.0001
- Page: https://openairdocs.org/proposed/FAA-2007-0254

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 777 airplanes. This proposed AD would require installing software upgrades to the airplane information management system (AIMS) located in the flight compartment. This proposed AD results from an investigation that revealed that detrimental effects could occur on certain AIMS software during flight. We are proposing this AD to prevent an unannunciated loss of cabin pressure. If an undetected loss of pressure event were to cause an unsafe pressure in the cabin, the flight crew could become incapacitated.

## Notices in this docket

- Nov 28, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-23117, comments due Jan 14, 2008 (https://www.federalregister.gov/documents/2007/11/28/E7-23117/airworthiness-directives-boeing-model-777-airplanes)

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