# Proposed AD 98-NM-18-AD: Airbus Model A320 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-18-26
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 5, 1998, 63 FR 24760
- Comments due: June 4, 1998
- Became: [AD 98-18-26](https://openairdocs.org/ad/98-18-26)
- Docket: 98-NM-18-AD
- FR document: 98-11889
- Official PDF: https://openairdocs.org/files/sha256/d7/ab/d7ab6d12cdc708110e4db64180b87c32092f20c3f3735db0ad7d25ac680483b8 (from https://www.govinfo.gov/content/pkg/FR-1998-05-05/pdf/98-11889.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/05/05/98-11889/airworthiness-directives-airbus-model-a320-series-airplanes
- Page: https://openairdocs.org/proposed/98-NM-18-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A320 series airplanes. This proposal would require repetitive inspections to detect fatigue cracking of the front spar vertical stringers on the wings; and repair, if necessary. This proposal also provides for an optional terminating action for the repetitive inspections. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to detect and correct fatigue cracking of the front spar vertical stringers on the wings, which could result in reduced structural integrity of the airframe.

## Notices in this docket

- May 5, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-11889, comments due Jun 4, 1998 (https://www.federalregister.gov/documents/1998/05/05/98-11889/airworthiness-directives-airbus-model-a320-series-airplanes)

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