# Airworthiness Directives; Boeing Model 727-100 and 727-200 Series Airplanes
> **Rule** · Final rule. · Published 2003-06-11 · Effective 2003-07-16 · 68 FR 34781
## Document
- **Document number:** 03-13976
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 727-100 and 727-200 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 34781
- **Publication date:** 2003-06-11
- **Effective date:** 2003-07-16
- **FAA docket:** Docket No. 2001-NM-41-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727-100 and 727-200 series airplanes, that requires, under certain conditions, replacement of the installed autopilot pitch control computer with a modified computer, testing of the modified system, and revision of the Airplane Flight Manual (AFM). The actions specified by this AD are intended to prevent undesirable and potentially dangerous pitch oscillations during coupled instrument landing system (ILS) approaches. This AD is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/06/11/03-13976/airworthiness-directives-boeing-model-727-100-and-727-200-series-airplanes)
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