# Proposed AD 2002-NM-335-AD: Boeing Model 707 and 720 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-07-06
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 18, 2003, 68 FR 70477
- Comments due: February 2, 2004
- Became: [AD 2004-07-06](https://openairdocs.org/ad/2004-07-06)
- Docket: 2002-NM-335-AD
- FR document: 03-31180
- Official PDF: https://openairdocs.org/files/sha256/46/36/463617cb1c9e533b613a9bb72d3cb42462b94d071cd637b6f71ed7c9c35784a3 (from https://www.govinfo.gov/content/pkg/FR-2003-12-18/pdf/03-31180.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/12/18/03-31180/airworthiness-directives-boeing-model-707-and-720-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8BE9DE7125C082AE86256E000058DDE4.0001
- Page: https://openairdocs.org/proposed/2002-NM-335-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 707 and 720 series airplanes. This proposal would require repetitive inspections of the upper and lower barrel nuts and bolts that retain the aft trunnion support fitting of each main landing gear for corrosion, cracks, and loose or missing nuts and bolts; torque checks of the upper and lower bolts to verify the torque is within a specified range; and corrective actions, if necessary. This action is necessary to detect and correct cracking and/or loss of the barrel nuts and bolts that retain the aft trunnion support fitting, which could result in the collapse of the main landing gear upon landing. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Dec 18, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-31180, comments due Feb 2, 2004 (https://www.federalregister.gov/documents/2003/12/18/03-31180/airworthiness-directives-boeing-model-707-and-720-series-airplanes)

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