# Airworthiness Directives; Boeing Model 727 Series Airplanes
> **Rule** · Final rule. · Published 1999-10-04 · Effective 1999-11-08 · 64 FR 53620
## Document
- **Document number:** 99-25219
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 727 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 53620
- **Publication date:** 1999-10-04
- **Effective date:** 1999-11-08
- **FAA docket:** Docket No. 98-NM-378-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727 series airplanes, that requires modification of the pressure web of the nose landing gear wheel well. This amendment is prompted by reports of fatigue cracks in the pressure web of the nose landing gear wheel well. The actions specified by this AD are intended to prevent cracking of the pressure web of the nose landing gear wheel well, which could result in loss of airplane pressurization.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/10/04/99-25219/airworthiness-directives-boeing-model-727-series-airplanes)
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