# NTSB ERA14MA271: Gulfstream Aerospace G IV, N121JM, Bedford, MA, June 1, 2014

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Class 1 · Major · Final report
- Date: May 31, 2014, 21:40 local (Jun 1, 2014, 01:40 UTC)
- Place: Bedford, MA
- Coordinates: 42.468887, -71.267776
- Nearby events: https://openairdocs.org/map.md?lat=42.4689&lon=-71.2678&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Defining event: [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300)
- Highest injury: Fatal
- Injuries: 7 fatal
- Status: Completed, report September 28, 2015
- Report: Board-adopted at Board Meeting
- Investigation class: Class 1
- NTSB office: Eastern Region Aviation
- Parties: Gulfstream Aerospace Corp., Honeywell Aerospace, Massport, FAA AVP-100, Rockwell Collins, UK - AAIB
- Safety recommendations: Yes
- NTSB case key (mKey): 89324
- NTSB case page: https://www.ntsb.gov/investigations/Pages/ERA14MA271.aspx
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/89324/pdf
- Board report AAR1503 (PDF): https://www.ntsb.gov/investigations/AccidentReports/Reports/AAR1503.pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=89324
- Page: https://openairdocs.org/ntsb/ERA14MA271

## Probable cause

The flight crewmembers' failure to perform the flight control check before takeoff, their attempt to take off with the gust lock system engaged, and their delayed execution of a rejected takeoff after they became aware that the controls were locked. Contributing to the accident were the flight crew's habitual noncompliance with checklists, Gulfstream Aerospace Corporation's failure to ensure that the G-IV gust lock/throttle lever interlock system would prevent an attempted takeoff with the gust lock engaged, and the Federal Aviation Administration's failure to detect this inadequacy during the G-IV's certification.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Flight control system: gust lock or damper](https://openairdocs.org/ntsb-findings/01022770): Aircraft › Aircraft systems · Incorrect use/operation (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/01022770/cases.md?model=3980115), [All aircraft, 14 cases](https://openairdocs.org/ntsb-findings/01022770/cases.md)
- [Action: forgotten action/omission](https://openairdocs.org/ntsb-findings/02041035): Personnel issues › Action/decision · Flight crew (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/02041035/cases.md?model=3980115), [All aircraft, 440 cases](https://openairdocs.org/ntsb-findings/02041035/cases.md)
- [Use of equip/info: use of checklist](https://openairdocs.org/ntsb-findings/02063030): Personnel issues › Task performance · Flight crew (probable cause); cases with it: [Gulfstream Aerospace G-IV, 2 cases](https://openairdocs.org/ntsb-findings/02063030/cases.md?model=3980115), [All aircraft, 336 cases](https://openairdocs.org/ntsb-findings/02063030/cases.md)
- [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Attain/maintain not possible (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=3980115), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md)
- [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Flight crew (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=3980115), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md)
- [Personality/attitude: complacency](https://openairdocs.org/ntsb-findings/02021020): Personnel issues › Psychological · Flight crew (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/02021020/cases.md?model=3980115), [All aircraft, 23 cases](https://openairdocs.org/ntsb-findings/02021020/cases.md)
- [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Flight crew (probable cause); cases with it: [Gulfstream Aerospace G-IV, 2 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=3980115), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md)
- [Object/animal/substance: runway/taxi/approach light](https://openairdocs.org/ntsb-findings/03022012): Environmental issues › Physical environment · Contributed to outcome (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/03022012/cases.md?model=3980115), [All aircraft, 106 cases](https://openairdocs.org/ntsb-findings/03022012/cases.md)
- [Object/animal/substance: tower/antenna (incl guy wires)](https://openairdocs.org/ntsb-findings/03022017): Environmental issues › Physical environment · Contributed to outcome (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/03022017/cases.md?model=3980115), [All aircraft, 55 cases](https://openairdocs.org/ntsb-findings/03022017/cases.md)
- [Action: lack of action](https://openairdocs.org/ntsb-findings/02041030): Personnel issues › Action/decision · Emergency services personnel (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/02041030/cases.md?model=3980115), [All aircraft, 792 cases](https://openairdocs.org/ntsb-findings/02041030/cases.md)
- [Policy/procedure: adequacy of policy/proc](https://openairdocs.org/ntsb-findings/04021015): Organizational issues › Management · Emergency services (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/04021015/cases.md?model=3980115), [All aircraft, 106 cases](https://openairdocs.org/ntsb-findings/04021015/cases.md)
- [Flight control system: gust lock or damper](https://openairdocs.org/ntsb-findings/01022770): Aircraft › Aircraft systems · Design (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/01022770/cases.md?model=3980115), [All aircraft, 14 cases](https://openairdocs.org/ntsb-findings/01022770/cases.md)
- [Selection/certification/testing: equip certification/testing](https://openairdocs.org/ntsb-findings/04012015): Organizational issues › Development · Manufacturer (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/04012015/cases.md?model=3980115), [All aircraft, 21 cases](https://openairdocs.org/ntsb-findings/04012015/cases.md)
- [Oversight: oversight of reg compliance](https://openairdocs.org/ntsb-findings/04032040): Organizational issues › Support/oversight/monitoring · FAA/Regulator (probable cause); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-findings/04032040/cases.md?model=3980115), [All aircraft, 14 cases](https://openairdocs.org/ntsb-findings/04032040/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Prior to flight: Preflight or dispatch event](https://openairdocs.org/ntsb-events/030); cases with it: [Gulfstream Aerospace G-IV, 2 cases](https://openairdocs.org/ntsb-events/030/sequence.md?model=3980115), [All aircraft, 355 cases](https://openairdocs.org/ntsb-events/030/sequence.md)
- [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300) (defining event); cases with it: [Gulfstream Aerospace G-IV, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=3980115), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md)
- [Post-impact: Fire/smoke (post-impact)](https://openairdocs.org/ntsb-events/170); cases with it: [Gulfstream Aerospace G-IV, 1 case](https://openairdocs.org/ntsb-events/170/sequence.md?model=3980115), [All aircraft, 354 cases](https://openairdocs.org/ntsb-events/170/sequence.md)

## Analysis

The Safety Board's full report is available at http://www.ntsb.gov/investigations/AccidentReports/Pages/AccidentReports.aspx. The Aircraft Accident Report number is NTSB/AAR-15/03. On May 31, 2014, about 2140 eastern daylight time, a Gulfstream Aerospace Corporation G-IV, N121JM, registered to SK Travel, LLC, and operated by Arizin Ventures, LLC, crashed after it overran the end of runway 11 during a rejected takeoff at Laurence G. Hanscom Field, Bedford, Massachusetts. The airplane rolled through the paved overrun area and across a grassy area, collided with approach lights and a localizer antenna, passed through the airport's perimeter fence, and came to a stop in a ravine. The two pilots, a flight attendant, and four passengers died. The airplane was destroyed by impact forces and a postcrash fire. The corporate flight, which was destined for Atlantic City International Airport, Atlantic City, New Jersey, was conducted under the provisions of 14 Code of Federal Regulations Part 91. An instrument flight rules flight plan was filed. Night visual meteorological conditions prevailed at the time of the accident

## Factual narrative

The Safety Board's full report is available at http://www.ntsb.gov/investigations/AccidentReports/Pages/AccidentReports.aspx. The Aircraft Accident Report number is NTSB/AAR-15/03. On May 31, 2014, about 2140 eastern daylight time, a Gulfstream Aerospace Corporation G-IV, N121JM, registered to SK Travel, LLC, and operated by Arizin Ventures, LLC, crashed after it overran the end of runway 11 during a rejected takeoff at Laurence G. Hanscom Field, Bedford, Massachusetts. The airplane rolled through the paved overrun area and across a grassy area, collided with approach lights and a localizer antenna, passed through the airport's perimeter fence, and came to a stop in a ravine. The two pilots, a flight attendant, and four passengers died. The airplane was destroyed by impact forces and a postcrash fire. The corporate flight, which was destined for Atlantic City International Airport, Atlantic City, New Jersey, was conducted under the provisions of 14 Code of Federal Regulations Part 91. An instrument flight rules flight plan was filed. Night visual meteorological conditions prevailed at the time of the accident.

## Aircraft

- Registration: [N121JM](https://openairdocs.org/deregistered/N121JM-2017-07-18), registration cancelled 2017-07-18, S/N 1399, built 2000 (OpenAirDocs)
- Reported make and model: GULFSTREAM AEROSPACE G IV
- Registry model: [Gulfstream Aerospace G-IV](https://openairdocs.org/model/gulfstream-aerospace-g-iv) (registry code 3980115) (OpenAirDocs)
- Registry engine: [Rolls-Royce TAY-611SER](https://openairdocs.org/engine/rolls-royce-tay-611ser) (registry code 54561, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 1399
- Year built: 2000
- Airframe hours: 4945
- Engines: ROLLS-ROYCE TAY 611-8 13850 lbs thrust turbo fan; ROLLS-ROYCE TAY 611-8 13850 lbs thrust turbo fan
- Damage: Destroyed
- Fire: On-Ground
- Flight: Executive/Corporate, Part 91
- Operator: Arizin Ventures, LLC
- Registered owner: Sk Travel LLC
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, September 20, 2013, 250 hours before
- Departed: BED, BEDFORD, MA
- Destination: ACY, ATLANTIC CITY, NJ
- Flight plan: IFR
- Airport: BED, Laurence G Hanscom Fld, runway 11, 7,011 × 150 ft, asphalt
- Equipment: Data recorder, Electronic multifunction display, Auto-pilot, ADS-B, Stall warning system, Onboard weather, Electronic primary flight display

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; injuries: fatal; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; seat: left; restraint: 5-point; toxicology performed; flight hours: 11,270 total, 1,645 in this make and model, 53 in the last 90 days, 9 in the last 30 days, 1 in the last 24 hours
- Co-pilot; age 61; injuries: fatal; airline transport, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; seat: right; restraint: 5-point; toxicology performed; flight hours: 18,560 total, 3,160 in this make and model, 53 in the last 90 days, 9 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 46 °F, dew point 43 °F
- Altimeter: 30.28 inHg
- Observed at: BED

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20140531024449A](https://openairdocs.org/incident/20140531024449A), May 31, 2014: Gulfstream Aerospace G-IV, Bedford, MA, Destroyed, 7 fatal. On may 31, 2014, about 2140 eastern daylight time, a Gulfstream Aerospace corporation G-IV, N121JM, Operated by sk travel LLC., was destroyed after a rejected…

## Docket (91 files)

The files NTSB released with the investigation on April 8, 2015, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=89324. 240 MB in all.

- Operations - Factual Report of Group Chairman (item 1, .PDF, 84 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424586&FileExtension=.PDF&FileName=Operations%20%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF
- Operations - Attachment 1: NTSB Owner/Operator Accident Report (item 2, .PDF, 2.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424587&FileExtension=.PDF&FileName=Operations%20-%20Attachment%201%3A%20NTSB%20Owner%2FOperator%20Accident%20Report-Redacted.PDF
- Operations - Attachment 2: Witness Statements (item 3, .PDF, 79 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424588&FileExtension=.PDF&FileName=Operations%20-%20Attachment%202%3A%20Witness%20Statements-Master.PDF
- Operations – Attachment 3: Controller Statements (item 4, .PDF, 307 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424589&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%203%3A%20Controller%20Statements-Redacted.PDF
- Operations - Attachment 4: Flight Plan (item 5, .PDF, 164 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424590&FileExtension=.PDF&FileName=Operations%20-%20Attachment%204%3A%20Flight%20Plan-Master.PDF
- Operations - Attachment 5: Pilot Training Records PIC – Excerpts (item 6, .PDF, 739 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424591&FileExtension=.PDF&FileName=Operations%20-%20Attachment%205%3A%20Pilot%20Training%20Records%20PIC%20%E2%80%93%20Excerpts-Redacted.PDF
- Operations – Attachment 6: Pilot Training Records SIC – Excerpts (item 7, .PDF, 1.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424592&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%206%3A%20Pilot%20Training%20Records%20SIC%20%E2%80%93%20Excerpts-Redacted.PDF
- Operations - Attachment 7: Pilot Logbook SIC – Excerpts (item 8, .PDF, 664 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424593&FileExtension=.PDF&FileName=Operations%20-%20Attachment%207%3A%20Pilot%20Logbook%20SIC%20%E2%80%93%20Excerpts-Redacted.PDF
- Operations - Attachment 8: Conversation Record – Pilots Spouses (item 9, .PDF, 57 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424595&FileExtension=.PDF&FileName=Operations%20-%20Attachment%208%3A%20Conversation%20Record%20%E2%80%93%20Pilots%20Spouses-Master.PDF
- Operations – Attachment 9: Conversation Record – Contract Mechanic (item 10, .PDF, 58 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424600&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%209%3A%20%20Conversation%20Record%20%E2%80%93%20Contract%20Mechanic-Redacted.PDF
- Operations – Attachment 10: Conversation Record – Contract Pilot (item 11, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424603&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2010%3A%20Conversation%20Record%20%E2%80%93%20Contract%20Pilot-Master.PDF
- Operations – Attachment 11: Conversation Record – GIII Pilot (item 12, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424604&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2011%3A%20%20Conversation%20Record%20%E2%80%93%20GIII%20Pilot-Master.PDF
- Operations – Attachment 12: Airplane Flight Logs – January 2014 to May 2014 (item 13, .PDF, 4.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424605&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2012%3A%20Airplane%20Flight%20Logs%20%E2%80%93%20January%202014%20to%20May%202014-Redacted.PDF
- Operations – Attachment 13: Airplane Flight Logs – January 2013 to December 2013 (item 14, .PDF, 37.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424774&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2013%3A%20%20Airplane%20Flight%20Logs%20%E2%80%93%20January%202013%20to%20December%202013-Redacted.PDF
- Operations – Attachment 14: SK Travel Flight Operations Manual – Excerpt (item 15, .PDF, 1.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424775&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2014%3A%20SK%20Travel%20Flight%20Operations%20Manual%20%E2%80%93%20Excerpt-Redacted.PDF
- Operations – Attachment 15: SK Travel Audit Report (item 16, .PDF, 8.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424776&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2015%3A%20%20SK%20Travel%20Audit%20Report-Redacted.PDF
- Operations – Attachment 16: Aircraft Dry Lease Agreement - Excerpt (item 17, .PDF, 268 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424777&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2016%3A%20Aircraft%20Dry%20Lease%20Agreement%20-%20Excerpt-Master.PDF
- Operations – Attachment 17: Airplane Flight Manual – Excerpts (Checklists) (item 18, .PDF, 63 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424778&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2017%3A%20Airplane%20Flight%20Manual%20%E2%80%93%20Excerpts%20(Checklists)-Master.PDF
- Operations – Attachment 18: Airplane Operating Manual – Excerpts (Gust Lock System) (item 19, .PDF, 95 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424779&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2018%3A%20Airplane%20Operating%20Manual%20%E2%80%93%20Excerpts%20(Gust%20Lock%20System)-Master.PDF
- Operations – Attachment 19: Airplane Operating Manual – Excerpts (Advisory Messages) (item 20, .PDF, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424780&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2019%3A%20%20Airplane%20Operating%20Manual%20%E2%80%93%20Excerpts%20(Advisory%20Messages)-Master.PDF
- Operations – Attachment 20: Airplane Operating Manual – Excerpts (Flight Control Emergency Procedures) (item 21, .PDF, 16 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424781&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2020%3A%20Airplane%20Operating%20Manual%20%E2%80%93%20Excerpts%20(Flight%20Control%20Emergency%20Procedures)-Master.PDF
- Operations – Attachment 21: Flight Safety G-IV Training Material - Excerpts (item 22, .PDF, 460 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424782&FileExtension=.PDF&FileName=Operations%20%E2%80%93%20Attachment%2021%3A%20Flight%20Safety%20G-IV%20Training%20Material%20-%20Excerpts-Master.PDF
- Cockpit Voice Recorder - Factual Report of Group Chairman (item 23, .PDF, 2 photos, 479 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424784&FileExtension=.PDF&FileName=Cockpit%20Voice%20Recorder%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF
- Cockpit Voice Recorder - Factual Report of Group Chairman - Errata 1 (item 24, .PDF, 20 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40429725&FileExtension=.PDF&FileName=Cockpit%20Voice%20Recorder%20-%20Factual%20Report%20of%20Group%20Chairman%20-%20Errata%201-Master.PDF
- Cockpit Voice Recorder - Factual Report of Group Chairman - Addendum (item 25, .PDF, 206 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40429243&FileExtension=.PDF&FileName=Cockpit%20Voice%20Recorder%20-%20Factual%20Report%20of%20Group%20Chairman%20-%20Addendum-Master.PDF
- Flight Data Recorder - Factual Report of Group Chairman (item 26, .PDF, 8 photos, 982 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424785&FileExtension=.PDF&FileName=Flight%20Data%20Recorder%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF
- Flight Data Recorder - Factual Report Addendum (item 27, .PDF, 3 photos, 1.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424786&FileExtension=.PDF&FileName=Flight%20Data%20Recorder%20-%20%20Factual%20Report%20Addendum-Master.PDF
- Flight Data Recorder - Factual Report - Addendum 2 (item 28, .PDF, 599 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40429726&FileExtension=.PDF&FileName=Flight%20Data%20Recorder%20-%20Factual%20Report%20-%20Addendum%202-Master.PDF
- Flight Data Recorder – Accident Power Cycle Data (item 29, .CSV, 351 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424787&FileExtension=.csv&FileName=Flight%20Data%20Recorder%20%E2%80%93%20Accident%20Power%20Cycle%20Data-Master.csv
- Flight Data Recorder – Previous Taxi Data (item 30, .CSV, 14.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424788&FileExtension=.csv&FileName=Flight%20Data%20Recorder%20%E2%80%93%20Previous%20Taxi%20Data-Master.csv
- Airworthiness – Factual Report of Group Chairman (item 31, .PDF, 14 photos, 3.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424789&FileExtension=.PDF&FileName=Airworthiness%20%E2%80%93%20Factual%20Report%20of%20Group%20Chairman-Master.PDF
- Materials Laboratory Factual Report No. 15-021 (item 32, .PDF, 5.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424790&FileExtension=.PDF&FileName=Materials%20Laboratory%20Factual%20Report%20No.%2015-021-Master.PDF
- Memorandum of Record - In-Service PLA Data (item 33, .PDF, 108 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424791&FileExtension=.PDF&FileName=Memorandum%20of%20Record%20-%20In-Service%20PLA%20Data-Redacted.PDF
- System Safety & Certification – Factual Report of Group Chairman (item 34, .PDF, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424792&FileExtension=.PDF&FileName=System%20Safety%20%26%20Certification%20%E2%80%93%20Factual%20Report%20of%20Group%20Chairman-Master.PDF
- System Safety & Certification – Attachment 1 - Compliance Checklist Report (item 35, .PDF, 415 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424793&FileExtension=.PDF&FileName=System%20Safety%20%26%20Certification%20%E2%80%93%20Attachment%201%20-%20Compliance%20Checklist%20Report-Redacted.PDF
- System Safety & Certification - Attachment 2 – FAA 8110-3 Forms (item 36, .PDF, 273 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424794&FileExtension=.PDF&FileName=System%20Safety%20%26%20Certification%20-%20Attachment%202%20%E2%80%93%20FAA%208110-3%20Forms-Redacted.PDF
- System Safety & Certification - Attachment 3 – Drawing 1159SCF451 – Gust Lock Sector (item 37, .PDF, 410 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424795&FileExtension=.PDF&FileName=System%20Safety%20%26%20Certification%20-%20Attachment%203%20%E2%80%93%20Drawing%201159SCF451%20%E2%80%93%20Gust%20Lock%20Sector-Redacted.PDF
- System Safety & Certification - Attachment 4 – Qualification Test Plan (item 38, .PDF, 405 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424796&FileExtension=.PDF&FileName=System%20Safety%20%26%20Certification%20-%20Attachment%204%20%E2%80%93%20Qualification%20Test%20Plan-Redacted.PDF
- Aircraft Performance Study – Errata (item 39, .PDF, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40429984&FileExtension=.PDF&FileName=Aircraft%20Performance%20Study%20%E2%80%93%20Errata-Master.PDF
- Survival Factors – Factual Report of Group Chairman (item 40, .PDF, 28 photos, 3.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424798&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Factual%20Report%20of%20Group%20Chairman-Master.PDF
- Survival Factors – Attachment 1: FBI Finger Print Report (item 41, .PDF, 314 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424799&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%201%3A%20FBI%20Finger%20Print%20Report-Redacted.PDF
- Survival Factors – Attachment 2 – Injury Chart and Occupant Location (item 42, .PDF, 82 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40426093&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%202%20%E2%80%93%20Injury%20Chart%20and%20Occupant%20Location-Master.PDF
- Survival Factors – Attachment 3: Pilot Toxicology Reports (item 43, .PDF, 158 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424801&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%203%3A%20Pilot%20Toxicology%20Reports-Master.PDF
- Survival Factors – Attachment 4: SK Travel Flight Operations Manual - Excerpt (item 44, .PDF, 433 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424802&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%20%204%3A%20SK%20Travel%20Flight%20Operations%20Manual%20-%20Excerpt-Master.PDF
- Survival Factors – Attachment 5: Flight Attendant Training Records (item 45, .PDF, 360 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424803&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%205%3A%20Flight%20Attendant%20Training%20Records-Redacted.PDF
- Survival Factors – Attachment 6: Dod/FAA Agreement on Inspection of DoD Firefighters at Joint Use Airfields (item 46, .PDF, 515 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424804&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%206%3A%20Dod%2FFAA%20Agreement%20on%20Inspection%20of%20DoD%20Firefighters%20at%20Joint%20Use%20Airfields-Master.PDF
- Survival Factors – Attachment 7: December 23, 2011 Letter from FAA to Massport (item 47, .PDF, 133 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424805&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%207%3A%20December%2023,%202011%20Letter%20from%20FAA%20to%20Massport-Redacted.PDF
- Survival Factors – Attachment 8: Dod/Massport contract for ARFF Service (item 48, .PDF, 575 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424806&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%208%3A%20Dod%2FMassport%20contract%20for%20ARFF%20Service-Redacted.PDF
- Survival Factors – Attachment 9: 2012 Airport Table Top Exercise (item 49, .PDF, 7.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424807&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%209%3A%202012%20Airport%20Table%20Top%20Exercise-Redacted.PDF
- Survival Factors – Attachment 10: Hanscom AFB ARFF Apparatus and Personnel (item 50, .PDF, 30 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424808&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%2010%3A%20Hanscom%20AFB%20ARFF%20Apparatus%20and%20Personnel-Master.PDF
- Survival Factors – Attachment 11: ARFF Timeline (item 51, .PDF, 192 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424809&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%2011%3A%20ARFF%20Timeline-Master.PDF
- Survival Factors – Attachment 12: Interviews and Statements (item 52, .PDF, 11.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424810&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Attachment%2012%3A%20Interviews%20and%20Statements-Redacted.PDF
- Gulfstream G-IV Gust Lock & Autothrottle Systems Ground Test Plan (GIV-GER-0016) (item 53, .PDF, 406 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424811&FileExtension=.PDF&FileName=Gulfstream%20G-IV%20Gust%20Lock%20%26%20Autothrottle%20Systems%20Ground%20Test%20Plan%20(GIV-GER-0016)-Redacted.PDF
- Gulfstream G-IV Gust Lock & Autothrottle Systems Ground Test Report (GIV-GER-0017) (item 54, .PDF, 1.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424812&FileExtension=.PDF&FileName=Gulfstream%20G-IV%20Gust%20Lock%20%26%20Autothrottle%20Systems%20Ground%20Test%20Report%20(GIV-GER-0017)-Redacted.PDF
- Gulfstream Flight Test Report – GIV Gust Lock System (GIV-GER-9978) (item 55, .PDF, 814 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424813&FileExtension=.PDF&FileName=Gulfstream%20Flight%20Test%20Report%20%E2%80%93%20GIV%20Gust%20Lock%20System%20(GIV-GER-9978)-Redacted.PDF
- Gulfstream NTSB Flight Test Report – GIV Gust Lock System (GIV-GER-9980) (item 56, .PDF, 696 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424814&FileExtension=.PDF&FileName=Gulfstream%20NTSB%20Flight%20Test%20Report%20%E2%80%93%20GIV%20Gust%20Lock%20System%20(GIV-GER-9980)-Redacted.PDF
- Gulfstream Operator Letter ALL-MOL-14-0015 Airplane Flight Manual Procedures (item 57, .PDF, 130 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424815&FileExtension=.PDF&FileName=Gulfstream%20Operator%20Letter%20ALL-MOL-14-0015%20Airplane%20Flight%20Manual%20Procedures-Redacted.PDF
- Gulfstream Operator Letter ALL-MOL-14-0024 Gust Lock System (item 58, .PDF, 190 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424816&FileExtension=.PDF&FileName=Gulfstream%20Operator%20Letter%20ALL-MOL-14-0024%20Gust%20Lock%20System-Redacted.PDF
- Gulfstream Operator Letter GIV-MOL-05-0018- Elevator and Aileron Actuator Load Relief Bungee Spring Inspection (item 59, .PDF, 221 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424817&FileExtension=.PDF&FileName=Gulfstream%20Operator%20Letter%20GIV-MOL-05-0018-%20Elevator%20and%20Aileron%20Actuator%20Load%20Relief%20Bungee%20Spring%20Inspection-Redacted.PDF
- Gulfstream Operator Letter GIV-MOL-06-0006- Elevator Actuator Load Relief Bungee Hardware Installation (item 60, .PDF, 181 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424818&FileExtension=.PDF&FileName=Gulfstream%20Operator%20Letter%20GIV-MOL-06-0006-%20Elevator%20Actuator%20Load%20Relief%20Bungee%20Hardware%20Installation-Redacted.PDF
- Gulfstream Service News No. 91-3 - Excerpt (item 61, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424819&FileExtension=.PDF&FileName=Gulfstream%20Service%20News%20No.%2091-3%20-%20Excerpt-Master.PDF
- Gulfstream EPR vs PLA Presentation (item 62, .PDF, 206 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424820&FileExtension=.PDF&FileName=Gulfstream%20EPR%20%20vs%20PLA%20Presentation-Redacted.PDF
- Air Traffic Control Transcripts (Airport Ground and Local Controller) (item 63, .PDF, 823 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424821&FileExtension=.PDF&FileName=Air%20Traffic%20Control%20Transcripts%20(Airport%20Ground%20and%20Local%20Controller)-Redacted.PDF
- Aircraft Bill of Sale (item 64, .PDF, 230 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424822&FileExtension=.PDF&FileName=Aircraft%20Bill%20of%20Sale-Redacted.PDF
- Maintenance Record – Excerpts (item 65, .PDF, 4.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424823&FileExtension=.PDF&FileName=Maintenance%20Record%20%E2%80%93%20Excerpts-Redacted.PDF
- Airport Weather Observations (item 66, .PDF, 24 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424824&FileExtension=.PDF&FileName=Airport%20Weather%20Observations-Master.PDF
- Party Forms and Guidance (item 67, .PDF, 6.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424825&FileExtension=.PDF&FileName=Party%20Forms%20and%20Guidance-Redacted.PDF
- Release of Aircraft Wreckage, NTSB Form 6120.15 (item 68, .PDF, 218 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424826&FileExtension=.PDF&FileName=Release%20of%20Aircraft%20Wreckage,%20NTSB%20Form%206120.15-Redacted.PDF
- Massachusetts State Police Collision Analysis and Reconstruction Section Accident Site Diagrams (item 69, .PDF, 7 photos, 23.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424827&FileExtension=.PDF&FileName=Massachusetts%20State%20Police%20Collision%20Analysis%20and%20Reconstruction%20Section%20Accident%20Site%20Diagrams-Redacted.PDF
- Photo 1 – Aerial Photograph 1 – Approach End of Runway 11 (Courtesy of Mass State Police) (item 70, .PDF, 10.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424828&FileExtension=.PDF&FileName=Photo%201%20%E2%80%93%20Aerial%20Photograph%201%20%E2%80%93%20Approach%20End%20of%20Runway%2011%20(Courtesy%20of%20Mass%20State%20Police)-Master.PDF
- Photo 2 – Aerial Photograph 2 – Accident Site Overview 1 (Courtesy of Mass State Police) (item 71, .PDF, 11.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424829&FileExtension=.PDF&FileName=Photo%202%20%E2%80%93%20Aerial%20Photograph%202%20%E2%80%93%20Accident%20Site%20Overview%201%20(Courtesy%20of%20Mass%20State%20Police)-Master.PDF
- Photo 3 – Aerial Photograph 3 – Accident Site Overview 2 (Courtesy of Mass State Police) (item 72, .PDF, 11.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424830&FileExtension=.PDF&FileName=Photo%203%20%E2%80%93%20Aerial%20Photograph%203%20%E2%80%93%20Accident%20Site%20Overview%202%20(Courtesy%20of%20Mass%20State%20Police)-Master.PDF
- Photo 4 – Aerial Photograph 4 – Accident Site Overview 3 (Courtesy of Mass State Police) (item 73, .PDF, 10.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424831&FileExtension=.PDF&FileName=Photo%204%20%E2%80%93%20Aerial%20Photograph%204%20%E2%80%93%20Accident%20Site%20Overview%203%20(Courtesy%20of%20Mass%20State%20Police)-Master.PDF
- Photo 5 – Aerial Photograph 5 – Accident Site Overview 4 (Courtesy of Mass State Police) (item 74, .PDF, 13.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40424832&FileExtension=.PDF&FileName=Photo%205%20%E2%80%93%20Aerial%20Photograph%205%20%E2%80%93%20Accident%20Site%20Overview%204%20(Courtesy%20of%20Mass%20State%20Police)-Master.PDF
- Medical Factual Report (item 75, .PDF, 281 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430141&FileExtension=.PDF&FileName=Medical%20Factual%20Report-Master.PDF
- Survival Factors – Addendum 1 – Firefighter Interviews and Control Tower Statements (item 76, .PDF, 381 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430143&FileExtension=.PDF&FileName=Survival%20Factors%20%E2%80%93%20Addendum%201%20%E2%80%93%20Firefighter%20Interviews%20and%20Control%20Tower%20Statements-Redacted.PDF
- Party Submission - Gulfstream Aerospace Corporation (item 77, .PDF, 5.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430144&FileExtension=.PDF&FileName=Party%20Submission%20-%20Gulfstream%20Aerospace%20Corporation-Master.PDF
- Party Submission - Massachusetts Port Authority (item 78, .PDF, 739 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430145&FileExtension=.PDF&FileName=Party%20Submission%20-%20Massachusetts%20Port%20Authority-Redacted.PDF
- Non-Party Submission - SK Travel LLC (item 79, .PDF, 880 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430146&FileExtension=.PDF&FileName=Non-Party%20Submission%20-%20SK%20Travel%20LLC%20-Redacted.PDF
- Airplane Flight Manual Excerpt – Speed Definitions (item 80, .PDF, 54 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430147&FileExtension=.PDF&FileName=Airplane%20Flight%20Manual%20Excerpt%20%E2%80%93%20Speed%20Definitions%20-Master.PDF
- Airplane Operating Manual Excerpt – Rejected Takeoff Procedures (item 81, .PDF, 56 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430148&FileExtension=.PDF&FileName=Airplane%20Operating%20Manual%20Excerpt%20%E2%80%93%20Rejected%20Takeoff%20Procedures-Master.PDF
- Flight Safety GIV Training Excerpt – Standard Maneuvers and Callouts (item 82, .PDF, 129 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430149&FileExtension=.PDF&FileName=Flight%20Safety%20GIV%20Training%20Excerpt%20%E2%80%93%20Standard%20Maneuvers%20and%20Callouts-Master.PDF
- GAC-AC-GIV-OPS-0003 – Pilot Checklist (Found in Cockpit) (item 83, .PDF, 2.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430150&FileExtension=.PDF&FileName=GAC-AC-GIV-OPS-0003%20%E2%80%93%20Pilot%20Checklist%20(Found%20in%20Cockpit)-Master.PDF
- GAC-CR-607 Qualification Test Report for Gulfstream IV (item 84, .PDF, 9.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430151&FileExtension=.PDF&FileName=GAC-CR-607%20Qualification%20Test%20Report%20for%20Gulfstream%20IV-Redacted.PDF
- SK Travel Flight Operations Manual Rev 3 – Excerpt (item 85, .PDF, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430152&FileExtension=.PDF&FileName=SK%20Travel%20Flight%20Operations%20Manual%20Rev%203%20%E2%80%93%20Excerpt-Master.PDF
- Gulfstream's Response to NTSB Questions Regarding Certification (item 86, .PDF, 162 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430153&FileExtension=.PDF&FileName=Gulfstream%27s%20Response%20to%20NTSB%20Questions%20Regarding%20Certification-Master.PDF
- FAA Response to NTSB Information Request 14-289 (14 CFR 25.679) (item 87, .PDF, 1.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430154&FileExtension=.PDF&FileName=FAA%20Response%20to%20NTSB%20Information%20Request%2014-289%20(14%20CFR%2025.679)-Redacted.PDF
- Massport Follow-Up Email to NTSB with Attachments (June 30, 2015) (item 88, .PDF, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430155&FileExtension=.PDF&FileName=Massport%20Follow-Up%20Email%20to%20NTSB%20with%20Attachments%20(June%2030,%202015)-Redacted.PDF
- NTSB-Massport Email Exchange regarding "Grid" and "Perimeter Gate" Clarification (item 89, .PDF, 95 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430156&FileExtension=.PDF&FileName=NTSB-Massport%20%20Email%20Exchange%20regarding%20%22Grid%22%20and%20%22Perimeter%20Gate%22%20Clarification%20-Redacted.PDF
- Hanscom AFB Memorandum to BED Airport Manager dated March 20, 2014 (item 90, .PDF, 339 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430157&FileExtension=.PDF&FileName=Hanscom%20AFB%20Memorandum%20to%20BED%20Airport%20Manager%20dated%20March%2020,%202014-Redacted.PDF
- GIV Throttle and Gust Lock Kinematic Analysis (item 91, .PDF, 262 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40430158&FileExtension=.PDF&FileName=GIV%20Throttle%20and%20Gust%20Lock%20Kinematic%20Analysis-Master.PDF

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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