# Proposed AD 97-NM-166-AD: Israel Aircraft Industries (IAI), Ltd., Model 1121, 1121A, 1121B, 1123, 1124, and 1124A Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-05-09
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 11, 1997, 62 FR 42952
- Comments due: September 22, 1997
- Became: [AD 98-05-09](https://openairdocs.org/ad/98-05-09)
- Docket: 97-NM-166-AD
- FR document: 97-21098
- Official PDF: https://openairdocs.org/files/sha256/fc/58/fc5819b11c24ac345c7783433fb0b8e6f57a189bbd942fd0fde0622d701182f8 (from https://www.govinfo.gov/content/pkg/FR-1997-08-11/pdf/97-21098.pdf)
- Federal Register: https://www.federalregister.gov/documents/1997/08/11/97-21098/airworthiness-directives-israel-aircraft-industries-iai-ltd-model-1121-1121a-1121b-1123-1124-and
- Page: https://openairdocs.org/proposed/97-NM-166-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all IAI, Ltd., Model 1121, 1121A, 1121B, 1123, 1124, and 1124A series airplanes. This proposal would require repetitive inspections of the trim actuator of the horizontal stabilizer to verify jackscrew integrity and to detect excessive wear of the tie rod, and replacement of the actuator or tie rod, if necessary. This proposal is prompted by issuance of mandatory continued airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to ensure that the trim actuator of the horizontal stabilizer operates properly; failure of the actuator to operate properly could result in reduced controllability of the airplane.

## Notices in this docket

- Aug 11, 1997: Notice of proposed rulemaking (NPRM). (first notice), FR document 97-21098, comments due Sep 22, 1997 (https://www.federalregister.gov/documents/1997/08/11/97-21098/airworthiness-directives-israel-aircraft-industries-iai-ltd-model-1121-1121a-1121b-1123-1124-and)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.