# Proposed AD FAA-2005-20692: Boeing Model 747-100, 747-100B, 747- 100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SR, and 747SP Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-22-06
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 23, 2005, 70 FR 14589
- Comments due: May 9, 2005
- Became: [AD 2005-22-06](https://openairdocs.org/ad/2005-22-06)
- Docket: FAA-2005-20692 (https://www.regulations.gov/docket/FAA-2005-20692, where comments are filed)
- Project: 2004-NM-229-AD
- FR document: 05-5696
- Official PDF: https://openairdocs.org/files/sha256/07/83/0783991c4adcdb150d4f9e5a16a7af07d51b1741a9ddc9ac5764f2ebc9f6484a (from https://www.govinfo.gov/content/pkg/FR-2005-03-23/pdf/05-5696.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/03/23/05-5696/airworthiness-directives-boeing-model-747-100-747-100b-747-100b-sud-747-200b-747-200c-747-200f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/55EE9F88DFABEB0686256FCD0062EAD1.0001
- Page: https://openairdocs.org/proposed/FAA-2005-20692

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747- 200C, 747-200F, 747-300, 747SR, and 747SP series airplanes. This proposed AD would require doing a one-time high-frequency eddy current inspection and repetitive detailed inspections for cracks in the frame web of main entry door number 1; and repairing the door frame web if necessary. This proposed AD would also provide for optional terminating action for the repetitive inspections. This proposed AD is prompted by reports of cracking at the upper aft corner of the cutout for main entry door number 1 in the station 488 frame web. We are proposing this AD to detect and correct cracks in the frame web. These cracks could cause the frame to break and lead to rapid decompression of the airplane.

## Notices in this docket

- Mar 23, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-5696, comments due May 9, 2005 (https://www.federalregister.gov/documents/2005/03/23/05-5696/airworthiness-directives-boeing-model-747-100-747-100b-747-100b-sud-747-200b-747-200c-747-200f)

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