N3500X

01 /  Registration

Filed with the Federal Aviation Administration

Every cell below is a literal field from the FAA Aircraft Registry. Click any value to open the FAA registry record for N3500X.

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…

  Atlas AD 99-21572 → Federal Register ↗

• May 21, 1999

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

  Atlas AD C9-8408 → 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…

  Atlas AD 99-8408 → 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…

  Atlas AD 99-7025 → 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

  Atlas AD X98-20903 → 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…

  Atlas AD 98-19615 → 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 /  Related

More on Mcdonnell Douglas Helicopter 600N in the Atlas

Mcdonnell Douglas Helicopter 600N type page → — 14 registered · 6 ADs · 5 NTSB records

Search the full US registry → · All airworthiness directives → · Accident & safety surface →

06 /  Sources & Methodology

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

• FAA Aircraft Registry →

  Refreshed May 5, 2026

  Available

• NTSB CAROL →

  Refreshed May 5, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed May 5, 2026

  Available

• FAA Service Difficulty Reports →

  Refreshed May 5, 2026

  Unavailable

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