# Proposed AD FAA-2007-28973: Boeing Model 747-400, -400D, and -400F Series Airplanes; Boeing Model 757 Airplanes; and Boeing Model 767 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-02-14
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 16, 2007, 72 FR 45986
- Comments due: October 1, 2007
- Became: [AD 2008-02-14](https://openairdocs.org/ad/2008-02-14)
- Docket: FAA-2007-28973 (https://www.regulations.gov/docket/FAA-2007-28973, where comments are filed)
- Project: 2007-NM-118-AD
- FR document: E7-16100
- Official PDF: https://openairdocs.org/files/sha256/b0/13/b0137f69bdd06e1a2c7662b48e81e5c257b73cad7940adc2d14fee09558bba6b (from https://www.govinfo.gov/content/pkg/FR-2007-08-16/pdf/E7-16100.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/08/16/E7-16100/airworthiness-directives-boeing-model-747-400--400d-and--400f-series-airplanes-boeing-model-757
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CE9EE06D45FA9DD18625733900510713.0001
- Page: https://openairdocs.org/proposed/FAA-2007-28973

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing airplanes listed above. This proposed AD would require an inspection of certain lighted pushbutton switches in the flight compartment for configuration `D' master modules and part numbers and corrective action if necessary. This proposed AD also provides an option to inspect panel assemblies for part numbers. This proposed AD results from a report indicating that the integrated drive generator failed in flight due to a possible switch malfunction. We are proposing this AD to ensure that certain lighted pushbutton switches in the flight compartment do not malfunction and cause the flightcrew to be unable to control critical airplane systems and continue safe airplane operation.

## Notices in this docket

- Aug 16, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-16100, comments due Oct 1, 2007 (https://www.federalregister.gov/documents/2007/08/16/E7-16100/airworthiness-directives-boeing-model-747-400--400d-and--400f-series-airplanes-boeing-model-757)

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