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Public Record · As of May 5, 2026

N60BK

Mcdonnell Douglas Helicopter 600N · 1998 View Type →

Status

Registration Valid

Type

Rotorcraft

Engine

ALLISON 250-C47

Last Cert Issue

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to MCDONNELL DOUGLAS HELICOPTER 600N

Federal Aviation Administration airworthiness directives matched to make and model. Each entry links to the Federal Register publication.

  • Aug 20, 1999

    Airworthiness Directives; MD Helicopters, Inc. Model 600N Helicopters

    This amendment adopts a new airworthiness directive (AD), applicable to MD Helicopters, Inc. (MDHI) Model 600N helicopters, that requires applying serial numbers to several life-limited components related to pitch control and removing and replacing the components according to new life-limits. This amendment is prompted by fatigue tests that indicate a need…

    Federal Register →
  • May 21, 1999

    Airworthiness Directives; McDonnell Douglas Helicopter Systems (MDHS) Model 369E, 369FF, 500N, and 600N Helicopters

    Federal Register →
  • Apr 6, 1999

    Airworthiness Directives; McDonnell Douglas Helicopter Systems (MDHS) Model 369E, 369FF, 500N, and 600N Helicopters

    This amendment supersedes an existing priority letter airworthiness directive (AD) 98-17-14, applicable to MDHS Model 369E, 369FF, 500N, and 600N helicopters, that currently requires, within the next 14 calendar days, inspecting each relay receptacle contact socket for correct size of the contact socket holes and replacing incorrectly- sized contact sockets…

    Federal Register →
  • Mar 23, 1999

    Airworthiness Directives; McDonnell Douglas Helicopter Systems Model 600N Helicopters

    This document proposes the adoption of a new airworthiness directive (AD) that is applicable to McDonnell Douglas Helicopter Systems (MDHS) Model 600N helicopters. This proposal would require applying serial numbers to several life-limited components related to pitch control and removing and replacing the components according to new life-limits. This propos…

    Federal Register →
  • Sep 3, 1998

    Airworthiness Directives; McDonnell Douglas Helicopter Systems Model 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N, and OH-6A Helicopters

    Federal Register →
  • Jul 23, 1998

    Airworthiness Directives; McDonnell Douglas Helicopter Systems Model 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N, and OH-6A Helicopters

    This amendment supersedes an existing priority letter Airworthiness Directive (AD) 98-03-15, applicable to McDonnell Douglas Helicopter Systems (MDHS) Model 369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N, and OH-6 helicopters that currently requires an inspection for main rotor blade (blade) cracks and for missing or cracked adhes…

    Federal Register →

04 /  Service Difficulty Reports

FAA SDR filings

The FAA does not currently expose a public API for Service Difficulty Reports. We do not back-fill or paraphrase. Search the FAA SDR portal directly →

05 /  Sources & Methodology

Every fact on this page links to its primary US-government source

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