Aeroflot Flight 1912
Tupolev Tu-104B · Instrument failure and mechanical errors followed by hard landing
From Odesa International Airport (ODS) to Vladivostok International Airport (VVO)
Event
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- Event fatalities
- 97 · all aircraft and ground
- Ground fatalities
- Unknown
- Occupants
- 126
- Survivors
- 29
- InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Airline
Tupolev Tu-104B
- Aircraft type
- Tupolev TU-104
- Category
- Airplane · from aircraft type
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- CCCP-42405
- Operator
- Aeroflot
- Onboard fatalities
- 97
- Route
- From Odesa International Airport (ODS)To Vladivostok International Airport (VVO)
Cause areas
- Aircraft › Aircraft systems
- Aircraft › Aircraft oper/perf/capability
From the investigation findings the Wikipedia article reports, sorted into the NTSB's cause areas with AI assistance.
Approximate · Coordinates from the Wikipedia article; not checked against an investigation report.
From the Wikipedia article
Aeroflot Flight 1912 was a scheduled domestic Aeroflot passenger flight on the Odessa-Kiev (Kyiv)-Chelyabinsk-Novosibirsk-Irkutsk-Khabarovsk-Vladivostok route that crashed on 25 July 1971, making a hard landing at Irkutsk Airport. It touched down 150 m short of the runway, breaking the left wing and catching fire. Of the 126 people on board the aircraft, 29 survived.
Investigation and cause
Causes
The flight was on an approach speed far below the recommended parameters. The instruments most likely gave inaccurate readings, causing the crew to reduce speed before touching the runway led to a hard landing. Examination of the airspeed indicators showed that the indicators themselves were functional, but flight tests showed that changes in cabin pressure affected the pressure in the full-pressure pipeline of the speed indicator used by the co-pilot and the navigator; resulting in an overstatement of the speed ranging from 17 to 80 km/h. While simulating the flight to determine the cause of the erroneous indications, the depressurization happened approximately three minutes after turning off the cabin pressurization. The probability of such events occurring during descent was supposed to be 0.000001%.
The investigation cited the three primary causes of the accident as follows:
Text from the Wikipedia article “Aeroflot Flight 1912” (revision 1360656063, retrieved 2026-09-18) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out. Read the article
Sources
Wikipedia article: Aeroflot Flight 1912
- Article
- Aeroflot Flight 1912
- Revision
- 1360656063 · 2026-06-22 · retrieved 2026-09-18
- Wikidata
- Q16662533
- Licence
- Text CC BY-SA 4.0, by the article's authors; Wikidata CC0; town positions GeoNames (CC BY 4.0)
Where each value comes from
- Record
- Wikipedia article "Aeroflot Flight 1912" (page 53730592, revision 1360656063)
- Date
- Wikipedia infobox: date
- Place and country
- Wikipedia infobox: site
- Map position
- Wikipedia article coordinates
- Aircraft, operator and route
- Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
- Operation
- flight number in the article title
- Fatalities
- Wikipedia infobox: aircraft fatalities
- Ground fatalities
- not stated in the Wikipedia infobox
- Summary
- Wikipedia infobox: summary
Source notes (1)
- Wikipedia · Facts from the Wikipedia article's infobox and coordinates, not checked against an investigation report. Independent review pending.