Airworthiness Directive · Amendment 39-11342 · MD Helicopters Inc. Model 369D, D369E, 369FF, 500N, and 600N Helicopters

AD 99-20-12

MD Helicopters Inc. Model 369D, D369E, 369FF, 500N, and 600N Helicopters

Rotorcraft

Published: September 30, 1999
Effective: November 4, 1999
Maker: MD Helicopters, Inc. (MDHI)
Supersedes: Nothing

Applies to

Model 369D, 369E, 369FF, 500N, and 600N helicopters, with oil cooler blower bracket (bracket), part number (P/N) 369F5190-1, installed, certificated in any category.

The FAA's summary

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.

Official sources

The Federal Register document · document 99-25375, the legal text
FAA Dynamic Regulatory System (DRS) · search 99-20-12 for its current status and any corrections