Airworthiness Directives; MD Helicopters Inc. Model 369D, D369E, 369FF, 500N, and 600N Helicopters
airworthiness · Rule · Final rule. · Published 1999-09-30 · Effective 1999-11-04 · 64 FR 52649
Document
Document number
99-25375
Federal Register citation
64 FR 52649
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
MD
Publication date
1999-09-30
Effective date
1999-11-04
FAA docket
Docket No. 98-SW-80-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to MD Helicopters, Inc. Model 369D, 369E, 369FF, 500N, and 600 N helicopters, that requires replacing the oil cooler blower bracket (bracket). This amendment is prompted by three reports of cracked brackets. The actions specified by this AD are intended to prevent failure of a bracket, loss of cooling of engine oil and transmission oil, and subsequent forced landing.