# Proposed AD FAA-2004-18601: Boeing Model 747-100, -200B, -200F, - 200C, -100B, -300, -100B SUD, -400, -400D, -400F, and 747SR Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-01-09
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 15, 2004, 69 FR 42365
- Comments due: August 30, 2004
- Became: [AD 2005-01-09](https://openairdocs.org/ad/2005-01-09)
- Docket: FAA-2004-18601 (https://www.regulations.gov/docket/FAA-2004-18601, where comments are filed)
- Project: 2004-NM-34-AD
- FR document: 04-16030
- Official PDF: https://openairdocs.org/files/sha256/77/77/777787d656828a421891893049c9ebe89885b109416d429ac6f692df49ffa2a8 (from https://www.govinfo.gov/content/pkg/FR-2004-07-15/pdf/04-16030.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/07/15/04-16030/airworthiness-directives-boeing-model-747-100--200b--200f--200c--100b--300--100b-sud--400--400d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7EAF06C9365E447486256ED2004B4E6A.0001
- Page: https://openairdocs.org/proposed/FAA-2004-18601

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 747 series airplanes. This proposed AD would require a one-time inspection for discrepancies of the frame web and inner chords on the forward edge frame of the number 5 main entry door cutout, and related corrective action. This proposed AD is prompted by a report of cracking of the frame web and inner chords on the forward edge frame of the number 5 main entry door. We are proposing this AD to find and fix discrepancies of the frame web and inner chords, which could result in cracking, subsequent severing of the frame, and consequent rapid depressurization of the airplane.

## Notices in this docket

- Jul 15, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-16030, comments due Aug 30, 2004 (https://www.federalregister.gov/documents/2004/07/15/04-16030/airworthiness-directives-boeing-model-747-100--200b--200f--200c--100b--300--100b-sud--400--400d)

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