# NTSB BFO95IA023: Douglas DC-8-54F, N427FB, New York, NY, December 25, 1994 - Type: NTSB incident investigation - Classification: Incident · No injuries · Incident investigation · Final report - Date: December 25, 1994, 02:00 local (07:00 UTC) - Place: New York, NY - Coordinates: 40.650482, -73.7901 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.6505&lon=-73.7901&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 5 uninjured - Status: Completed, report August 31, 1995 - Report: Approved by Office Director - NTSB case key (mKey): 9006 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO95IA023 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9006/pdf - Page: https://openairdocs.org/ntsb/BFO95IA023 ## Probable cause THE FAILURE OF THE RIGHT MAIN LANDING GEAR'S SHOCK STRUT PISTON LUG DUE TO STRESS CORROSION. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Gear collapsed, takeoff - roll/run - landing gear,main gear shock absorbing strut - stress corrosion (cause) - landing gear,main gear shock absorbing strut - separation ## Analysis DURING TAKEOFF ROLL, THE AIRPLANE'S RIGHT MAIN LANDING GEAR FAILED. POST INCIDENT EXAMINATION OF THE GEAR REVEALED THAT ITS SHOCK STRUT PISTON LUG HAD FAILED DUE TO STRESS CORROSION. ## Factual narrative On December 25, 1994, at 0200 eastern standard time, a DC-8-54F, N427FB, had its right main landing gear shock strut fail during the takeoff roll on runway 31L at the John F. Kennedy International Airport, New York City, New York. The three crew members and two passengers were not injured. Visual meteorological conditions prevailed. The scheduled cargo flight was conducted under 14 CFR Part 121. According to the Captain, during the takeoff roll he noticed the airplane shaking. He stated he aborted the takeoff and turned the airplane onto taxiway KK and stopped it at the hold-short line. He stated he tried to taxi the airplane from the hold-short line but it would not move. On scene examination of the airplane's right main landing gear revealed the gear had separated near its torque links. The two outboard tires were deflated and the two inboard tires remained inflated. The failed landing gear was returned to the airplane manufacturer for examination. The examination revealed that the airplane's piston lug on the shock strut had failed. The manufacturer's Examination Report stated, "The failure of subject piston was attributed to stress corrosion cracking. The primary origin area occurred along the inner radius of the forward torque link attach lug. The slow growth crack propagation exhibited a predominant inter-granular (I.G.) mode of rupture with associated corrosion attack of the I.G. facets decreasing with increasing crack depth. At the crack depth of 0.06 inch the crack transitions into a dimple mode of rupture indicative of overload. The overload portion joined with two additional fractures resulting in complete separation of the part." ## Aircraft - Registration: [N427FB](https://openairdocs.org/deregistered/N427FB-2017-03-06), registration cancelled 2017-03-06, S/N 45684, built 1963 (OpenAirDocs) - Reported make and model: DOUGLAS DC-8-54F - Registry model: [Douglas DC-8F-54](https://openairdocs.org/model/douglas-dc-8f-54) (registry code 3021926) (OpenAirDocs) - Registry engine: [Pratt & Whitney JT3D series](https://openairdocs.org/engine/pratt-whitney-jt3d-series) (registry code 52035, turbo-fan) (OpenAirDocs) - Category: Airplane - Serial number: 45684 - Airframe hours: 59411 - Engines: P&W JT3D-3B 18000 lbs thrust turbo jet - Damage: Minor damage - Flight: Part 121 - Operator: Fine Airlines, Inc. - Registered owner: Agro Air Associates - Airworthiness certificate: Standard, Transport - Last inspection: Continuous airworthiness, December 23, 1994, 21 hours before - Destination: POS, PORT OF SPAIN, OF - Flight plan: VFR/IFR - Airport: JFK, John F. Kennedy Intl, runway 31L, 14,572 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 38; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 10,729 total, 700 in this make and model, 8,709 as pilot in command, 220 in the last 90 days, 78 in the last 30 days ## Weather - Conditions: Visual (VMC), Night/dark - Visibility: 20 statute miles ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Incident 19941225046479I](https://openairdocs.org/incident/19941225046479I), Dec 25, 1994: Doug DC8F54, New York, NY, Minor damage. Aborted takeoff due vibration. Right gear broke at bogie pivot. All four tires blown. 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. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.