- Registered owner
- Aurora Meridian LLC
- Location
- Portland, OR
- Owner type
- LLC
- Serial number
- LN066
- Type
- Rotorcraft
- Engine
- Turbo-shaft
- Airworthiness
- Standard, normal
- Airworthiness date
- February 12, 1999
- Certificate issued
- June 22, 2022
- Expires
- June 30, 2029
- Mode S code
- A68A2C
Mcdonnell Douglas Helicopter 500NTCDS H3WEAirframe · Mcdonnell Douglas Helicopter 500NTCDS E4CEEngine · Allison 250-C20 series
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Allison 250-C20 model are included below.
On this page
Airworthiness directives that may apply · 52
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1972 | 1 |
|---|---|
| 1973 | 1 |
| 1974 | 1 |
| 1977 | 2 |
| 1979 | 1 |
| 1981 | 1 |
| 1982 | 2 |
| 1984 | 1 |
| 1989 | 1 |
| 1994 | 1 |
| 1996 | 3 |
| 1997 | 1 |
| 1998 | 4 |
| 1999 | 4 |
| 2000 | 2 |
| 2001 | 2 |
| 2002 | 1 |
| 2004 | 1 |
| 2005 | 4 |
| 2006 | 2 |
| 2007 | 1 |
| 2008 | 1 |
| 2012 | 1 |
| 2013 | 1 |
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 2 |
Airframe · Mcdonnell Douglas Helicopter 500N
AD 2026-21-05Engine/transmission couplingAD 2026-19-01Rotorcraft flight controlAD 2025-17-11tail rotor control systemInformation bulletins that may apply · 3
Advisory, not mandatory.
Airframe · Mcdonnell Douglas Helicopter 500N
SAIB AIR-21-19R1AERIAL TOW EQUIPMENT, Side Pull HookSAIB SW-12-45Garmin Model 400W/500W Series GPS-WAAS Navigation SystemEngine · Allison 250-C20 series
SAIB CE-01-10Historical bulletins · 1
NTSB investigations
No NTSB investigations matched to N520NTMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Mcdonnell Douglas Helicopter 500N aircraft
Investigations on N520NT not matched to an aircraft · 1
They name N520NT, but no registry record covers the date, the aircraft registered then was built later, or the investigation describes another aircraft.
FAA incident reports
No FAA accident or incident reports matched to N520NTMatched by N-number and event date, checked against the reported make and model. Reports from before this aircraft carried the mark are under Earlier aircraft. Reports on Mcdonnell Douglas Helicopter 500N aircraft
Service difficulty reports
No reports matched to N520NTGeneral aviation reporting is voluntary. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Reports on Mcdonnell Douglas Helicopter 500N aircraft
STCs that may be installed · 184
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Mcdonnell Douglas Helicopter 500N
Earlier aircraft with this N-number · 1
This aircraft carried N520NT before the one registered now. The FAA can assign a mark to another aircraft once a registration is cancelled.