# Proposed AD FAA-2004-19986: Boeing Model 737-600, -700, -800, and -900 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-07-20
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 5, 2005, 70 FR 733
- Comments due: February 22, 2005
- Became: [AD 2005-07-20](https://openairdocs.org/ad/2005-07-20)
- Docket: FAA-2004-19986 (https://www.regulations.gov/docket/FAA-2004-19986, where comments are filed)
- Project: 2004-NM-247-AD
- FR document: 05-169
- Official PDF: https://openairdocs.org/files/sha256/b1/58/b1586ecc2bfc7f6f611a3735e20021c1ad54194e6cd29d62f501b7d342e704a5 (from https://www.govinfo.gov/content/pkg/FR-2005-01-05/pdf/05-169.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/01/05/05-169/airworthiness-directives-boeing-model-737-600--700--800-and--900-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E0F4CE6DDBD2C7D186256F800058754B.0001
- Page: https://openairdocs.org/proposed/FAA-2004-19986

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -800, and -900 series airplanes. This proposed AD would require installing and testing an updated version of the operational program software of the flight control computers. This proposed AD is prompted by a report of an airplane pitching up with rapidly decreasing indicated airspeed after the flightcrew set a new altitude into the autopilot. We are proposing this AD to prevent anomalous autopilot operation that produces a hazardous combination of airplane attitude and airspeed, which could result in loss of control of the airplane.

## Notices in this docket

- Jan 5, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-169, comments due Feb 22, 2005 (https://www.federalregister.gov/documents/2005/01/05/05-169/airworthiness-directives-boeing-model-737-600--700--800-and--900-series-airplanes)

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