NPRM 98-SW-80-AD

Became AD 99-20-12

Proposed airworthiness directive · Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 369FF, 500N, and 600N Helicopters

Open in Federal Register

Official PDF· 117 KB

Published: June 23, 1999 · 64 FR 33447
Comments due: August 23, 1999
Action: Notice of proposed rulemaking (NPRM)
Became: AD99-20-12
Docket: 98-SW-80-AD
FR document: 99-15932

A proposal is not in force. If adopted, it becomes an AD, usually with changes. Only the Federal Register edition is official.

Summary

This document proposes the adoption of a new airworthiness directive (AD) applicable to MD Helicopters Inc. (MDHI) Model 369D, 369E, 369FF, 500N, and 600N helicopters. The AD would require replacing the oil cooler blower bracket (bracket). This proposal is prompted by three reports of cracked brackets. The actions specified by the proposed AD are intended to prevent failure of a bracket, loss of cooling of engine oil and transmission oil, and a subsequent forced landing.

The resulting AD

AD 99-20-12Bracket P/N 369F5190-1 · MD Helicopters 369D, 369E, 369FF and 2 moreEffective Nov 4, 1999

Notices in this docket · 1

FR 99-15932Notice of proposed rulemaking (NPRM)Published Jun 23, 1999 · comments due Aug 23, 1999