# Airworthiness Directives; Sikorsky Aircraft Corporation Model S- 61A, D, E, L, N, NM, R, and V Helicopters; Correction
> **Rule** · Final rule; correction. · Published 1998-08-25 · Effective 1997-10-06 · 63 FR 45170
## Document
- **Document number:** 98-22699
- **Category:** airworthiness
- **Manufacturer:** Sikorsky
- **Type:** Rule
- **Action:** Final rule; correction.
- **Citation:** 63 FR 45170
- **Publication date:** 1998-08-25
- **Effective date:** 1997-10-06
- **FAA docket:** Docket No. 97-SW-18-AD
## Abstract

This document corrects the amendment number in airworthiness directive (AD) 97-19-06 that was incorrectly published in the Federal Register on September 19, 1997 (62 FR 49132). This AD is applicable to Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V helicopters and requires, before further flight, inspecting certain main rotor blades to determine the anodizing date for certain pocket assemblies installed on the blade, and if a blade has a pocket assembly that was anodized by Poly-Metal Company during the period of October 1, 1996, through December 31, 1996, replacing it with an airworthy blade.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/08/25/98-22699/airworthiness-directives-sikorsky-aircraft-corporation-model-s--61a-d-e-l-n-nm-r-and-v-helicopters)
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