# Proposed AD FAA-2008-1070: Boeing Model 737-100, -200, -200C, - 300, -400, and -500 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-09-07
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 8, 2008, 73 FR 58906
- Comments due: November 24, 2008
- Became: [AD 2009-09-07](https://openairdocs.org/ad/2009-09-07)
- Docket: FAA-2008-1070 (https://www.regulations.gov/docket/FAA-2008-1070, where comments are filed)
- Project: 2008-NM-087-AD
- FR document: E8-23828
- Official PDF: https://openairdocs.org/files/sha256/c7/75/c775eff7c2129072071c2b6b1bbc01052de9610adaad21cce2ceb73a9ccec9ad (from https://www.govinfo.gov/content/pkg/FR-2008-10-08/pdf/E8-23828.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/10/08/E8-23828/airworthiness-directives-boeing-model-737-100--200--200c--300--400-and--500-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/03ADC9EA4BC69C63862574DC004EFB95.0001
- Page: https://openairdocs.org/proposed/FAA-2008-1070

## Summary

We propose to adopt a new airworthiness directive (AD) for all Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. For all airplanes, this proposed AD would require repetitive overhaul of the retract actuator beam of the main landing gear (MLG). For certain airplanes, this proposed AD would require repetitive inspections for damage of the retract actuator beam, and related investigative and corrective actions if necessary. This proposed AD results from reports of broken retract actuator beams of the MLG and the subsequent failure of the MLG to fully retract. We are proposing this AD to detect and correct broken retract actuator beams of the MLG, which could cause damage to the beam arm, hydraulic tubing, and flight control cables. Damage to the flight control cables could result in loss of control of the airplane.

## Notices in this docket

- Oct 8, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-23828, comments due Nov 24, 2008 (https://www.federalregister.gov/documents/2008/10/08/E8-23828/airworthiness-directives-boeing-model-737-100--200--200c--300--400-and--500-series-airplanes)

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