Postmortems for the real world. Engineering and software failures, explained from the official investigation reports.https://bsky.app/profile/failurecase.comhttps://bsky.app/profile/failurecase.com/post/3mzgcvhh7dh22A Drum Built for Vapour, Handed Liquid: BP Texas City 2005 Source: CSB Report No. 2005-04-I-TX, p. 61 https://www.youtube.com/shorts/I1ZVfX1WzUE03 Nov 2026 17:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mzgcvhh7dh22https://bsky.app/profile/failurecase.com/post/3mzdsh6ovrm2aWhat the validator was checking: The CrowdStrike Outage - July 2024 Source: House hearing, Serial No. 118-81, p. 19; CrowdStrike RCA, 6 Aug 2024, p. 6 https://www.youtube.com/shorts/g56C8-19w_402 Nov 2026 17:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mzdsh6ovrm2ahttps://bsky.app/profile/failurecase.com/post/3mzbbyj5xps2kThe Gauge That Showed 78% on a Full Tower: BP Texas City 2005 Source: CSB Report No. 2005-04-I-TX, pp. 82, 321 https://www.youtube.com/shorts/4hbslkfk3TM01 Nov 2026 17:02 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mzbbyj5xps2khttps://bsky.app/profile/failurecase.com/post/3mz7mscldnl2aFrom the report: To have acceptable D/C ratios the plates should have been approximately 1 inch thick, twice their specified 0.5 inch. NTSB/HAR-08/03 p.128 Full case: https://www.youtube.com/watch?v=G36Y8TxX0Wk01 Nov 2026 01:10 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mz7mscldnl2ahttps://bsky.app/profile/failurecase.com/post/3mz6shkrcc425Seventy-eight minutes: The CrowdStrike Outage - July 2024 Source: CrowdStrike PIR https://www.youtube.com/shorts/O394luMhGXU31 Oct 2026 17:18 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mz6shkrcc425https://bsky.app/profile/failurecase.com/post/3mz2lbeib662pWhich part failed first? On the I-35W bridge, which part failed first? A) The concrete deck B) The U10 gusset plates C) A river pier D) The steel roller bearings Answer tomorrow, with the source.30 Oct 2026 00:59 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mz2lbeib662phttps://bsky.app/profile/failurecase.com/post/3myzna4js4c2yTwenty slots, twenty-one fields: The CrowdStrike Outage - July 2024 Source: CrowdStrike RCA, 6 Aug 2024 https://www.youtube.com/shorts/UgMeRD35hG829 Oct 2026 16:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3myzna4js4c2yhttps://bsky.app/profile/failurecase.com/post/3myzn7g2u3a2zThree Investigations of the St. Francis Dam, Side by Side https://www.youtube.com/shorts/P_tbiNtJGqM29 Oct 2026 16:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3myzn7g2u3a2zhttps://bsky.app/profile/failurecase.com/post/3myumc4c3nk2aThe Rock Under the St. Francis Dam Fell Apart in Water Source: 1928 Commission Report, pp. 12, 20 https://www.youtube.com/shorts/o3HuhyYpOEM27 Oct 2026 16:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3myumc4c3nk2ahttps://bsky.app/profile/failurecase.com/post/3mytlkgl26r2gHow a Gravity Dam Is Meant to Work - St. Francis Dam, 1928 Source: 1928 Commission Report, pp. 9, 16 https://www.youtube.com/shorts/qpJ7eJAZubo27 Oct 2026 06:15 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mytlkgl26r2ghttps://bsky.app/profile/failurecase.com/post/3mytlkepkkj2bWhy Facebook Couldn't Just Switch Everything Back On After the 2021 Outage Source: Facebook Engineering, 5 Oct 2021 https://www.youtube.com/shorts/2Ojzn5YeW_M27 Oct 2026 06:15 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mytlkepkkj2bhttps://bsky.app/profile/failurecase.com/post/3myhzxolyj32rBGP and DNS in Under a Minute: The Two Systems Behind the 2021 Facebook Outage Source: RFC 4271, p. 8; Facebook Engineering, 5 Oct 2021; RFC 1034, p. 6 https://www.youtube.com/shorts/A_msCGYXMzs22 Oct 2026 16:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3myhzxolyj32rhttps://bsky.app/profile/failurecase.com/post/3mycyzltqtp2d97 Warning Emails Before the Bell: Why Knight Capital's Safeguards Missed It Source: SEC Rel. 34-70694, pp. 8, 12 https://www.youtube.com/shorts/V0rN5g4MI3A20 Oct 2026 16:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mycyzltqtp2dhttps://bsky.app/profile/failurecase.com/post/3myaikidx4f2dWhy 3% More Weight Added 11% to One I-35W Bridge Member Source: NTSB/HAR-08/03, pp. 87, 137 https://www.youtube.com/shorts/Q9u_jWi2ykk19 Oct 2026 16:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3myaikidx4f2dhttps://bsky.app/profile/failurecase.com/post/3my5y3fjzvk2rThe Rollback That Made It Worse: Knight Capital's 45 Minutes Source: SEC Rel. 34-70694, pp. 6, 8 https://www.youtube.com/shorts/6HiAZg-V2Ek18 Oct 2026 16:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3my5y3fjzvk2rhttps://bsky.app/profile/failurecase.com/post/3my5xlcrhx22rBowed Plates in the Photos That No Inspection Recorded - I-35W Bridge Source: NTSB/HAR-08/03, pp. 61, 143 https://www.youtube.com/shorts/JfxQ7Th3nsg18 Oct 2026 15:52 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3my5xlcrhx22rhttps://bsky.app/profile/failurecase.com/post/3my3hmrag6u2yBowed Plates in the Photos That No Inspection Recorded - I-35W Bridge Source: NTSB/HAR-08/03, pp. 61, 143 https://www.youtube.com/shorts/JfxQ7Th3nsg17 Oct 2026 16:01 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3my3hmrag6u2yhttps://bsky.app/profile/failurecase.com/post/3mxwgr4g5tf2zThe I-35W Bridge Plates Were Half as Thick as Needed Source: NTSB/HAR-08/03, pp. 76, 128 https://www.youtube.com/shorts/_k7g1QNDMN015 Oct 2026 16:02 +0000at://did:plc:omp2jzpa2m4mkepxqo7ozbko/app.bsky.feed.post/3mxwgr4g5tf2z