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Accidents · NTSB ERA18MA099 · Final report

American Eurocopter CORP AS350B2 accident near New York, New York, March 11, 2018

On March 11, 2018 at about 11:08 pm local time, a 2013 American Eurocopter CORP AS350B2 (helicopter), registered N350LH, was substantially damaged in an accident during prior to flight near New York, New York. It was an other work-use flight under general aviation rules (Part 91). 5 people were killed and 1 person had minor injuries. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

Liberty Helicopters Inc.'s use of a NYONair-provided passenger harness/tether system, which caught on and activated the floor-mounted engine fuel shutoff lever and resulted in the in-flight loss of engine power and the subsequent ditching. Contributing to this accident were (1) Liberty's and NYONair's deficient safety management, which did not adequately mitigate foreseeable risks associated with the harness/tether system interfering with the floor-mounted controls and hindering passenger egress; (2) Liberty allowing NYONair to influence the operational control of Liberty's FlyNYON flights; and (3) the Federal Aviation Administration's inadequate oversight of Title 14 Code of Federal Regulations Part 91 revenue passenger-carrying operations. Contributing to the severity of the accident were (1) the rapid capsizing of the helicopter due to partial inflation of the emergency flotation system and (2) Liberty and NYONair's use of the harness/tether system that hindered passenger egress.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
March 11, 2018 · about 11:08 pm local time
Place
New York, New York · map
Type
Accident
Injuries
5 people were killed and 1 person had minor injuries.
Weather
visual conditions (good weather)
Aircraft
American Eurocopter CORP AS350B2, built 2013
Registration
N350LH · no longer on the register · serial 7654
Damage
Substantial damage
Flight
Other work-use flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

The Safety Board's full report is available at http://www.ntsb.gov/investigations/AccidentReports/Pages/aviation.aspx. The Aircraft Accident Report number is NTSB/AAR-19/04. On March 11, 2018, about 1908 eastern daylight time, an Airbus Helicopters AS350 B2, N350LH, lost engine power during cruise flight, and the pilot performed an autorotative descent and ditching on the East River in New York, New York. The pilot sustained minor injuries, the five passengers drowned, and the helicopter was substantially damaged. The FlyNYON-branded flight was operated by Liberty Helicopters Inc. (Liberty), per a contractual agreement with NYONair; both companies considered the flight to be an aerial photography flight operated under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91. (During this accident investigation, the Federal Aviation Administration determined that Liberty operated the flight as a nonstop commercial air tour under 14 CFR Part 91.) Visual flight rules weather conditions prevailed, and no flight plan was filed for the intended 30-minute local flight, which departed from Helo Kearny Heliport, Kearny, New Jersey, about 1850.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

What happened, in order

  1. Miscellaneous/other during prior to flight defining event
  2. Fuel starvation during maneuvering
  3. Loss of engine power (total) during maneuvering
  4. Attempted remediation/recovery during emergency descent
  5. Off-field or emergency landing during emergency descent
  6. Roll over during landing
  7. Evacuation during after landing
  8. Miscellaneous/other during after landing

The NTSB's findings

  • cause Aircraft › Aircraft systems › Equipment/furnishings › Flight compartment equipment › Design
  • cause Aircraft › Aircraft systems › Fuel system › Fuel selector/shutoff valve › Unintentional use/operation
  • cause Aircraft › Aircraft power plant › Engine (turbine/turboprop) › (general) › Inoperative
  • factor Organizational issues › Management › Culture › Safety › Operator
  • factor Organizational issues › Support/oversight/monitoring › Safety programs › Adherence to safety program › Operator
  • factor Organizational issues › Support/oversight/monitoring › Oversight › Oversight of operation › Operator
  • factor Organizational issues › Management › Culture › Safety › Other institution/organization
  • factor Organizational issues › Support/oversight/monitoring › Safety programs › Availability of safety program › Other institution/organization
  • factor Organizational issues › Support/oversight/monitoring › Oversight › Oversight of operation › FAA/Regulator
  • factor Organizational issues › Support/oversight/monitoring › Enforcement › Regulatory requirements › FAA/Regulator
  • factor Organizational issues › Management › Policy/procedure › Adequacy of policy/proc › FAA/Regulator
  • factor Aircraft › Aircraft systems › Landing gear system › Emergency floatation section › Design
  • factor Aircraft › Aircraft systems › Equipment/furnishings › Passenger compartment equip › Unnecessary use/operation

Pilot

  • Certificate: flight instructor, commercial pilot
  • Ratings: instructor: helicopter; instructor: instrument helicopter; instrument: helicopter; rotorcraft: helicopter
  • Flight time: 3,100 hours in all; 1,430 in this make and model; 57 in the last 90 days; 33 in the last 30 days; 3,020 as pilot in command; 1,625 on instruments
  • Last flight review: February 21, 2018
  • Medical certificate: Class 2 (without waivers/limitations)
  • Seat: rgt
  • Injury: minor injuries

Passenger

  • Seat: left
  • Injury: fatal

Passenger

  • Seat: left
  • Injury: fatal

Passenger

  • Seat: ctr
  • Injury: fatal

Passenger

  • Seat: ctr
  • Injury: fatal

Passenger

  • Seat: rgt
  • Injury: fatal

The aircraft

  • Airframe total time: 5,510.2 hours
  • Last inspection: 100-hour inspection, March 6, 2018; 14 hours since
  • Maximum gross weight: 4,961 lb
  • Seats: 7
  • Landing gear: fixed
  • Engine: Turbomeca Arriel 1D1 (turboshaft); 5,038 hours total
  • Operator: Liberty Helicopters INC

The flight

  • Departed from: 65NJ Kearny NJ at 10:50 pm
  • Destination: 65NJ Kearny NJ

Weather at the time

  • Light: dusk
  • Wind: from 330° at 7 knots
  • Visibility: 10 statute miles
  • Sky: scat at 250 ft
  • Temperature: 45°F (7°C), dew point 21°F (-6°C)
  • Altimeter: 30.05 inHg
  • Observation at 11:14 pm from LGA, 3 miles away

Injuries

FatalSeriousMinorNone
Flight crew1
Passengers5

Documents from the investigation the NTSB's docket: the evidence folder behind the report

79 documents, released by the NTSB on September 25, 2019. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.

#DocumentWhat it is
1 Pilot/operator Aircraft Accident Report, NTSB Form 6120.1 PDF, 11 pages View Download
2 Operations Group Chairman's Factual Report PDF, 81 pages View Download
3 Operations Attachment 1 - Interview Summaries PDF, 205 pages View Download
4 Operations Attachment 2 - Liberty Chief Pilot Interview (Transcription) PDF, 46 pages View Download
5 Operations Attachment 3 - Police Interview Transcript PDF, 8 pages View Download
6 Operations Attachment 4 - Pilot Training Information PDF, 45 pages View Download
7 Operations Attachment 5 - Pilot Duty Logs PDF, 26 pages View Download
8 Operations Attachment 6 - Liberty Helicopters Passenger Briefing PDF, 3 pages View Download
9 Operations Attachment 7 - Liberty Helicopters Emergency Procedures PDF, 5 pages View Download
10 Operations Attachment 8 - Liberty and Nyonair Charter Customer Agreement PDF, 5 pages View Download
11 Operations Attachment 9 - Liberty Helicopters Loa PDF, 8 pages View Download
12 Operations Attachment 10 - Weight and Balance Information PDF, 8 pages View Download
13 Operations Attachment 11 - Loading Sops PDF, 14 pages View Download
14 Operations Attachment 12 - Nyonair Part 91 New Pilot Onboarding Presentation PDF, 32 pages View Download
15 Operations Attachment 13 - FAA Air Tour Operators Document PDF, 3 pages View Download
16 Operations Attachment 14 - FAA Legal Interpretation PDF, 9 pages View Download
17 Operations Attachment 15 - FAA Photos PDF, 6 pages View Download
18 Operations Attachment 16 - Nyonair Cx Training Manual PDF, 11 pages View Download
19 Operations Attachment 17 - Spidertracks Information PDF, 5 pages View Download
20 Operations Attachment 18 - FAA Info 18003 PDF, 2 pages View Download
21 Operations Attachment 19 - FAA Order 8900.457 PDF, 6 pages View Download
22 Operations Attachment 20 - FAA 8900.1 Reference PDF, 154 pages View Download
23 Operations Attachment 21 - Airbus AS-350 Vemd Checklist PDF, 29 pages View Download
24 Operations Attachment 22 - Nyon Customer Service Pilot Training PDF, 4 pages View Download
25 Operations Attachment 23 - Liberty Nyonair Pilot Safety Meeting Minutes PDF, 31 pages View Download
26 Operations Attachment 24 - Liberty Training Manual - Extracts PDF, 12 pages View Download
27 Operations Addendum 1 - Ars Invoices PDF, 5 pages View Download
28 Operations Addendum 2 - FAA Legal Interpretation Email PDF, 5 pages View Download
29 Operations Addendum 3 - New York City Economic Development Corporation Email PDF, 16 pages View Download
30 Operations Addendum 4 - Pmi Email Questions PDF, 4 pages View Download
31 Operations Addendum 5 - Accident Pilot Post-interivew Statement PDF, 2 pages View Download
32 Weather Study PDF, 14 pages View Download
33 Air Traffic Control - N350LH Ground Track PDF, 1 page View Download
34 Air Traffic Control - FAA Chronological Summary of Flight and Partial Transcription of Voice Recordings PDF, 12 pages View Download
35 Air Traffic Control Transcript - NTSB Specialist's Factual Report PDF, 10 pages View Download
36 Air Traffic Control - FAA radar Tabular Data spreadsheet Download
37 Performance Study - Specialist's Report PDF, 11 pages View Download
38 Onboard Image Recorder (GoPro) - Group Chairman's Factual Report PDF, 44 pages View Download
39 Personal Electronic Devices (PED) - Specialist's Factual Report PDF, 4 pages View Download
40 Onboard Image, Audio, and Data Recorder (Appareo Vision 1000) - Specialist's Factual Report PDF, 5 pages View Download
41 Airworthiness Factual Report PDF, 18 pages View Download
42 Airworthiness Factual Report - Attachment 1 PDF, 3 pages View Download
43 Fsol - Snap Wire - Materials Laboratory Factual Report 18-059 PDF, 5 pages View Download
44 Video Study PDF, 6 pages View Download
45 Attachment 1 to Video Study - Video 1 MOV file Download
46 Attachment 2 to Video Study - Video 2 PDF, 1 page View Download
47 Powerplant Group Chairman's Factual Report PDF, 31 pages View Download
48 Emergency Flotation System Factual Report PDF, 34 pages View Download
49 Emergency Flotation System Factual Report - Attachment 1 PDF, 2 pages View Download
50 Emergency Flotation System Factual Report - Attachment 2 PDF, 2 pages View Download
51 Emergency Flotation System Factual Report - Attachment 3 PDF, 3 pages View Download
52 Emergency Flotation System Factual Report - Attachment 4 PDF, 5 pages View Download
53 Emergency Flotation System Factual Report - Attachment 5 PDF, 4 pages View Download
54 Emergency Flotation System Factual Report - Attachment 6 PDF, 8 pages View Download
55 Emergency Flotation System Factual Report - Attachment 7 PDF, 3 pages View Download
56 Emergency Flotation System Factual Report - Attachment 8 PDF, 2 pages View Download
57 Emergency Flotation System Factual Report - Attachment 9 PDF, 7 pages View Download
58 Emergency Flotation System Factual Report - Attachment 10 PDF, 6 pages View Download
59 Emergency Flotation System Factual Report - Attachment 11 PDF, 2 pages View Download
60 Emergency Flotation System Factual Report - Addendum 1 PDF, 3 pages View Download
61 Computed Tomography Specialist's Factual Report PDF, 34 pages View Download
62 Survival Factors Group Chariman's Factual Report PDF, 50 pages View Download
63 Survival Factors - Attachment 1 - Nyon SOP PDF, 14 pages View Download
64 Survival Factors - Attachment 3 - Nyonair Cx Training Manual PDF, 11 pages View Download
65 Survival Factors - Attachment 4 - Nyonair Customer Service Pilot Training PDF, 4 pages View Download
66 Survival Factors - Attachment 5 - Ars Heli-ops Harness PDF, 2 pages View Download
67 Survival Factors - Attachment 6 - Submission Package to FAA PDF, 3 pages View Download
68 Survival Factors - Attachment 7 FAA Submittal Video PDF, 1 page View Download
69 Survival Factors - Attachment 8 - Signed FAA Approval Letter PDF, 3 pages View Download
70 Survival Factors - Attachment 9 - Medical and Pathological Information PDF, 3 pages View Download
71 Survival Factors - Attachment 10 - Interview Summary- Kiara Martinez PDF, 4 pages View Download
72 Survival Factors - Attachment 11 - Interview Summary- Eric Adams PDF, 5 pages View Download
73 Survival Factors - Attachment 12 - Interview Summary- Divers PDF, 3 pages View Download
74 Party Submission to NTSB - Nyonair PDF, 42 pages View Download
75 Party Submission to NTSB - Dart Aerospace PDF, 13 pages View Download
76 Statement of Party Representatives to NTSB Investigation PDF, 8 pages View Download
77 Disclaimer of the Visual Reconstruction of the Accident - Animation PDF, 3 pages View Download
78 Release of Aircraft Wreckage, NTSB Form 6120.15 PDF, 5 pages View Download
79 NTSB - Adopted Board Report PDF, 1 page View Download

The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.