# Proposed AD 98-NM-33-AD: Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-15-22
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 27, 1998, 63 FR 14855
- Comments due: April 27, 1998
- Became: [AD 98-15-22](https://openairdocs.org/ad/98-15-22)
- Docket: 98-NM-33-AD
- FR document: 98-8097
- Official PDF: https://openairdocs.org/files/sha256/8e/53/8e53d00e07728e591a77009b6fd44739d2c3bdec69a2f468ae88def994539b39 (from https://www.govinfo.gov/content/pkg/FR-1998-03-27/pdf/98-8097.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/03/27/98-8097/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-120-series-airplanes
- Page: https://openairdocs.org/proposed/98-NM-33-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all EMBRAER Model EMB-120 series airplanes. This proposal would require a one-time inspection for delamination, erosion, and condition of fillet sealant and conductive edge sealer of the wing and empennage leading edge area behind the de- ice boots, and follow-on corrective actions. 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 prevent delamination of the wing and empennage leading edge due to improper installation of the wing de-ice boot, which could result in reduced controllability of the airplane.

## Notices in this docket

- Mar 27, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-8097, comments due Apr 27, 1998 (https://www.federalregister.gov/documents/1998/03/27/98-8097/airworthiness-directives-empresa-brasileira-de-aeronautica-sa-embraer-model-emb-120-series-airplanes)

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