# Proposed AD 2001-NM-180-AD: Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR, and 747SP Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-25-11
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 27, 2003, 68 FR 51521
- Comments due: October 14, 2003
- Became: [AD 2003-25-11](https://openairdocs.org/ad/2003-25-11)
- Docket: 2001-NM-180-AD
- FR document: 03-21873
- Official PDF: https://openairdocs.org/files/sha256/94/d2/94d2299323581f9d9cd8a06e169aad239c51e16397d59d865be4a968baa6a623 (from https://www.govinfo.gov/content/pkg/FR-2003-08-27/pdf/03-21873.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/08/27/03-21873/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/84656A5021BA9B0486256D8F004E85C1.0001
- Page: https://openairdocs.org/proposed/2001-NM-180-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing airplane models. This proposal would require a one-time inspection to identify all H-11 steel bolts installed in the latch fittings of the cargo doors, repetitive inspections for cracked or broken H-11 steel bolts, and follow-on and corrective actions if necessary. This proposal also would require eventual replacement of all H-11 steel bolts in the latch fittings of the cargo doors with Inconel bolts. This action is necessary to prevent broken bolts in the latch fittings, which could reduce the capability of the door latch to keep the door closed, and result in loss of a cargo door and consequent rapid depressurization of the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Aug 27, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-21873, comments due Oct 14, 2003 (https://www.federalregister.gov/documents/2003/08/27/03-21873/airworthiness-directives-boeing-model-747-100-747-100b-747-100b-sud-747-200b-747-200c-747-200f)

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