# Proposed AD FAA-2008-1362: Boeing Model 747-200C and 747-200F Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-22-14
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 12, 2009, 74 FR 1158
- Comments due: February 26, 2009
- Became: [AD 2009-22-14](https://openairdocs.org/ad/2009-22-14)
- Docket: FAA-2008-1362 (https://www.regulations.gov/docket/FAA-2008-1362, where comments are filed)
- Project: 2008-NM-150-AD
- FR document: E9-312
- Official PDF: https://openairdocs.org/files/sha256/a1/00/a10081827242796ab5dfa9d48c707e5d69ec563b659818554e736213b777fa55 (from https://www.govinfo.gov/content/pkg/FR-2009-01-12/pdf/E9-312.pdf)
- Federal Register: https://www.federalregister.gov/documents/2009/01/12/E9-312/airworthiness-directives-boeing-model-747-200c-and-747-200f-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/43EB37CD6C28F38A8625753C005C35D4.0001
- Page: https://openairdocs.org/proposed/FAA-2008-1362

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Boeing Model 747-200C and 747-200F series airplanes. This proposed AD would require installing larger moisture shrouds and additional drain lines in the electrical/electronic equipment center. This proposed AD results from reports of water contamination in the electrical/electronic units in the main equipment center. We are proposing this AD to prevent water contamination in the electrical/ electronic units in the main equipment center, which could result in an electrical short and potential loss of several functions essential for safe flight.

## Notices in this docket

- Jan 12, 2009: Notice of proposed rulemaking (NPRM). (first notice), FR document E9-312, comments due Feb 26, 2009 (https://www.federalregister.gov/documents/2009/01/12/E9-312/airworthiness-directives-boeing-model-747-200c-and-747-200f-series-airplanes)

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