NTSB: Scary Wire ERROR Caused Dali Crash/Key Bridge Collapse Baltimore

jeffostroff • November 23, 2025
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The National Transportation Safety Board (NTSB) has concluded that a single loose wire was a critical factor in the sequence of events that led to the container ship Dali striking and collapsing the Francis Scott Key Bridge in Baltimore. NTSB determined that wire 1, which was not properly seated in a circuit breaker terminal block 381, likely triggered the initial power outage on the vessel. BEST Home Depot Black Friday Buy 1 Get 1 Tool Deals: 🛒 DCB225-2C DeWalt Battery Kit 5.0Ah/2.0Ah and Charger BOGO https://homedepot.sjv.io/dOYbJ3 🛒 DeWalt DCK200D1P1 ATOMIC 2-Tool Combo Kit https://homedepot.sjv.io/jeYM6b 🛒 DeWalt DCKTS650D1P1 6-Tool rolling box Combo kit https://homedepot.sjv.io/jeYML6 🛒 Milwaukee 48-59-1852B M18 XC5.0 Battery Starter Kit BOGO https://homedepot.sjv.io/N97nab 🛒 Milwaukee 48-59-1862S M18 HO6.0 Ah Starter Kit BOGO https://homedepot.sjv.io/Xm7QBb 🛒 Home Depot Main Christmas Decoration Animatronics Page: https://homedepot.sjv.io/kOY7rn 🛒 Disney 4 ft. Animated LED Holiday Olaf A7 https://homedepot.sjv.io/o4YjYn 🛒 DEWALT $320 Off 12" Double Bevel Sliding Compound Miter Saw & Compact Miter Saw Stand: https://homedepot.sjv.io/MA70O2 (ONLINE ONLY DEAL) 🛒 RYOBI PSK106SB Battery Starter Kit Buy One Get One Free https://homedepot.sjv.io/Dy7joa 🛒 RIDGID AC8609340SB Battery Starter Kit Buy One Get One Free https://homedepot.sjv.io/kOY76n 🛒 Makita BL1840BDC2X Battery Charger Starter Pack BOGO https://homedepot.sjv.io/4GXZvM 🛒 Disney 4 ft. Animated Holiday Goofy A4 25SV24966 https://homedepot.sjv.io/Oe767z Link to NTSB website on Contact of Containership Dali with Francis Scott Key Bridge and Subsequent Bridge Collapse Investigation ID DCA24MM031: https://www.ntsb.gov/investigations/Pages/DCA24MM031.aspx Link to NTSB public docket files for MV Dali ship collision: https://data.ntsb.gov/Docket/?NTSBNumber=DCA24MM031 During a public meeting, NTSB investigators explained that the loose connection in the ship's electrical system caused a breaker to open unexpectedly. This initiated a chain reaction, resulting in two blackouts that left the Dali without propulsion and steering moments before it collided with the bridge on March 26, 2024. The tragic incident resulted in the loss of six construction workers who were on the bridge at the time. NTSB Chair Jennifer Homendy stated, "Finding this single wire was like hunting for a loose rivet on the Eiffel Tower." Investigators found that a wire-label banding prevented the wire from being fully inserted into a terminal block, resulting in an inadequate connection. The investigation also highlighted that the bridge's vulnerability to collapse from a vessel impact was a contributing factor to the severity of the disaster. The NTSB noted a lack of countermeasures that could have mitigated the risk posed by large vessels, which have grown in size since the bridge was built. 00:00 Introduction to NTSB Dali Root Cause Collision with Key Bridge 00:39 New Security Camera video of MV Dali bridge collision 03:03 Private home Ring camera video of Dali Collision 03:52 NTSB Dali Animation of loose wire failure leading to Dali Crash 07:31 How electrical wire arcing can affect residential outlets 08:40 Anatomy of the MV Dali tripped breakers and power outages 14:12 How NTSB discovered loose wire failure mode 18:49 Closeup wire and terminal block photos NTSB Materials Lab

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