# Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
> **Rule** · Final rule. · Published 1998-04-24 · Effective 1998-05-29 · 63 FR 20303
## Document
- **Document number:** 98-10481
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 20303
- **Publication date:** 1998-04-24
- **Effective date:** 1998-05-29
- **FAA docket:** Docket No. 96-NM-186-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes, that requires a modification of the lapjoint below the chine line at certain fuselage stations. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent fatigue cracking in the lapjoint below the chine line at certain fuselage stations, which could result in reduced structural integrity of the fuselage.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/04/24/98-10481/airworthiness-directives-fokker-model-f27-mark-100-200-300-400-500-600-and-700-series-airplanes)
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