Why Two Engines Are Safer Than Four: The ETOPS Story

Chapters

1. 00:00The Flight That Rewrote the Rules
2. 00:16In 1985, the FAA doubled the ETOPS limit to 120
3. 00:29The 60-Minute Rule
4. 00:51Why the Limit?
5. 01:10Boston to Paris
6. 01:311 per 20,000 hours
7. 01:44Redundancy: the safety net
8. 01:561 per 50,000 hours
9. 02:07Twin vs. quad
10. 02:25Four engines, four chances
11. 02:40Fewer chances, less risk
12. 02:55Twins are safer than quads
13. 03:15The engine fails
14. 03:25Gander, Goose Bay, St-John's, Keflavik, Lajes, S
15. 03:45The plan
16. 04:02The four-engine era ends
17. 04:19The First ETOPS Flight
18. 04:32The Engine Reliability Standard
19. 04:46Design for Redundancy
20. 04:58The Diversion Network
21. 05:12The Drift-Down Procedure
22. 05:25Twins rule the oceans

About this video

Discover the surprising story behind ETOPS and why twin-engine jets are now considered safer than four-engine aircraft. Learn how the 60-minute rule evolved into ETOPS-330, and why engine reliability statistics changed aviation forever. Chapters: 00:00 The Flight That Rewrote the Rules 00:15 In 1985, the FAA doubled the ETOPS limit to 120 00:29 The 60-Minute Rule 00:51 Why the Limit? 01:10 Boston to Paris 01:32 1 per 20,000 hours 01:45 Redundancy: the safety net 01:58 1 per 50,000 hours 02:09 Twin vs. quad 02:26 Four engines, four chances 02:42 Fewer chances, less risk 02:56 Twins are safer than quads 03:17 The engine fails 03:27 Gander, Goose Bay, St-John's, Keflavik, Lajes, S 03:48 The plan 04:05 The four-engine era ends 04:22 The First ETOPS Flight 04:35 The Engine Reliability Standard 04:50 Design for Redundancy 05:01 The Diversion Network 05:15 The Drift-Down Procedure 05:29 Twins rule the oceans Sources & further reading: • ETOPS — https://en.wikipedia.org/wiki/ETOPS • What Is ETOPS and How Does It Work? - Sheffield School of Aeronautics — https://www.sheffield.com/articles/etops-and-how-it-works • ETOPS (Extended-range Twin-engine Operational Performance Standards) - AeroGuard — https://www.flyaeroguard.com/learning-center/etops-explained • Extended Range Operations | SKYbrary Aviation Safety — https://skybrary.aero/articles/extended-range-operations • Why is the ETOPS acronym written on the side of this 787? — https://www.reddit.com/r/aviation/comments/15imk52/why_is_the_etops_acronym_written_on_the_side_of • AC 120-42B - Extended Operations (ETOPS and Polar Operations) — https://www.faa.gov/regulations_policies/advisory_circulars/index.cfm/go/document.information/documentid/73587 • ✈️ ETOPS — The Rule That Changed... - Aviation-knowledge — https://www.facebook.com/AVIO.KNOWLEDGE/posts/%EF%B8%8F-etops-the-rule-that-changed-long-haul-aviation-foreverthere-was-a-time-when-tw/1555747276591756 • EDTO Module 4 – Aircraft certification considerations. ... — https://www.icao.int/sites/default/files/sp-files/SAM/Documents/2014-EDTO/EDTO%20Module%20%204%20%E2%80%93%20Aircraft%20certification%20considerations.pdf

From the video

More from Wings & Wrecks

Why Two Planes Can't Occupy the Same Sky

The Plane That Flipped on Takeoff

Why Black Boxes Survive When Planes Don't

Why Lightning Can't Bring Down a Modern Jet

How Pilots Land When They Can't See the Runway

Why a Wet Runway Runs Out of Room

The Blade's Escape: Centrifugal Stress

Flying a Plane with No Hydraulics: The Impossible Landing of United 232