GULFSTREAM AEROSPACE G IV near Bedford, MA — 2014-06-01
- Date
- 2014-06-01
- Location
- Bedford, MA, USA
- Airport
- BED
- Aircraft
- GULFSTREAM AEROSPACE G IV
- Registration
- N121JM
- Category
- Airplane
- Highest injury
- Fatal
- Fatalities
- 7
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.
Contributing factors
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.
NTSB 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
NTSB coding
Evidence available
- CVR
- ATC audio
- FDR / data
- Photos
- 91 docket documents
Docket documentsshowing 50 of 91
- Air Traffic Control Transcripts (Airport Ground and Local Controller)atc
- Cockpit Voice Recorder - Factual Report of Group Chairmancvr
- Cockpit Voice Recorder - Factual Report of Group Chairman - Addendumcvr
- Cockpit Voice Recorder - Factual Report of Group Chairman - Errata 1cvr
- Flight Data Recorder - Factual Report Addendumfdr
- Flight Data Recorder - Factual Report - Addendum 2fdr
- Flight Data Recorder - Factual Report of Group Chairmanfdr
- Flight Data Recorder – Accident Power Cycle Datafdr
- Flight Data Recorder – Previous Taxi Datafdr
- Aircraft Performance Study – Errataform
- FAA Response to NTSB Information Request 14-289 (14 CFR 25.679)form
- Party Forms and Guidanceform
- Release of Aircraft Wreckage, NTSB Form 6120.15form
- System Safety & Certification - Attachment 2 – FAA 8110-3 Formsform
- Operations - Attachment 2: Witness Statementsinterview
- Operations – Attachment 3: Controller Statementsinterview
- Survival Factors – Addendum 1 – Firefighter Interviews and Control Tower Statementsinterview
- Survival Factors – Attachment 12: Interviews and Statementsinterview
- Aircraft Bill of Saleother
- Airplane Flight Manual Excerpt – Speed Definitionsother
- Airplane Operating Manual Excerpt – Rejected Takeoff Proceduresother
- Airport Weather Observationsother
- Flight Safety GIV Training Excerpt – Standard Maneuvers and Calloutsother
- GAC-AC-GIV-OPS-0003 – Pilot Checklist (Found in Cockpit)other
- GIV Throttle and Gust Lock Kinematic Analysisother
- Gulfstream EPR vs PLA Presentationother
- Gulfstream G-IV Gust Lock & Autothrottle Systems Ground Test Plan (GIV-GER-0016)other
- Gulfstream Operator Letter ALL-MOL-14-0015 Airplane Flight Manual Proceduresother
- Gulfstream Operator Letter ALL-MOL-14-0024 Gust Lock Systemother
- Gulfstream Operator Letter GIV-MOL-05-0018- Elevator and Aileron Actuator Load Relief Bungee Spring Inspectionother
- Gulfstream Operator Letter GIV-MOL-06-0006- Elevator Actuator Load Relief Bungee Hardware Installationother
- Gulfstream Service News No. 91-3 - Excerptother
- Gulfstream's Response to NTSB Questions Regarding Certificationother
- Hanscom AFB Memorandum to BED Airport Manager dated March 20, 2014other
- Maintenance Record – Excerptsother
- Massachusetts State Police Collision Analysis and Reconstruction Section Accident Site Diagramsother
- Massport Follow-Up Email to NTSB with Attachments (June 30, 2015)other
- Memorandum of Record - In-Service PLA Dataother
- NTSB-Massport Email Exchange regarding "Grid" and "Perimeter Gate" Clarificationother
- Non-Party Submission - SK Travel LLCother
- Operations - Attachment 4: Flight Planother
- Operations - Attachment 5: Pilot Training Records PIC – Excerptsother
- Operations - Attachment 7: Pilot Logbook SIC – Excerptsother
- Operations - Attachment 8: Conversation Record – Pilots Spousesother
- Operations – Attachment 10: Conversation Record – Contract Pilotother
- Operations – Attachment 11: Conversation Record – GIII Pilotother
- Operations – Attachment 12: Airplane Flight Logs – January 2014 to May 2014other
- Operations – Attachment 13: Airplane Flight Logs – January 2013 to December 2013other
- Operations – Attachment 14: SK Travel Flight Operations Manual – Excerptother
- Operations – Attachment 16: Aircraft Dry Lease Agreement - Excerptother
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