Air crash in Giebnia
Polish Air Force Ilyushin Il-28 · Cabin depressurisation or deployment of flaps at excessive speed
From Powidz Military Airport to an unrecorded destination
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
- 3 · all aircraft and ground
- Ground fatalities
- Unknown
- Occupants
- Unknown
- Survivors
- Unknown
- 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
- 0
- 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
- Military
Ilyushin Il-28
- Flight
- 766
- Aircraft type
- Ilyushin IL-28
- 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
- Unknown
- Operator
- Polish Air Force
- Onboard fatalities
- 3
- Route
- From Powidz Military AirportTo not recorded
Approximate · Coordinates from the Wikipedia article; not checked against an investigation report.
From the Wikipedia article
The air crash in Giebnia – the air crash of a military Il-28 aircraft of the 7th Reconnaissance-Bomber Aviation Brigade, which occurred on 11 December 1969 during a training flight on the route Powidz–Toruń training ground–Golub-Dobrzyń–Powidz.
Before the crash
It was 11 December 1969. The crew of the Il-28 bomber aircraft, consisting of: Lt. Jan Grymuza (pilot with 600 flight hours on Po-2, TS-8 Bies, UTIMiG-15, Lim-1, Lim-2, Il-28 aircraft), Lt. Bonifacy Hędzelewski (2nd class navigator) and Cpl. Ryszard Jędras (gunner-radio operator), took off from Powidz on a flight with the code name 766 towards Toruń and Golub-Dobrzyń, performing a navigation flight. Contrary to much of the information appearing in the media, the crew was not performing a practice bombing on that day. After reaching the last point on the route, the pilot changed course and directed the aircraft back to its home airfield in Powidz.
The crash
The machine increased its flight level to 11,000 m. In the area of the town of Janikowo the aircraft began a descent at high speed. During it the pilot extended the flaps, which led to one of them being torn off, and most probably cabin depressurisation occurred. The crew were unable to control the machine, as they probably lost consciousness, and the flight altitude was in any case too low to leave the aircraft and bail out with a parachute. The aircraft crashed in fields in the area of the village of Giebnia between two towns: Pakość and Janikowo. There is a hypothesis that the crew did not lose consciousness and deliberately tried to make an emergency landing in an uninhabited area, but this version has not been confirmed. The accident commission concluded that the probable cause of the crash was the crew's failure to observe the rules for operating the equipment while performing a manoeuvre on the approach to landing, by extending the flaps at high flight speed. However, no version was fully proven and the crash was officially deemed unexplained. The Aircraft Accident Investigation Commission in its reports did not decide that the pilot was to blame for the accident, as was maintained for years.
Translated into English with AI assistance from the Polish Wikipedia article “Katastrofa lotnicza w Giebni” (revision 76908076, retrieved 2026-09-19) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out; the translation may contain errors, and long articles were cut to their first 700 words. Read the article
Sources
Polish Wikipedia article: Katastrofa lotnicza w Giebni
- Article
- Katastrofa lotnicza w Giebni
- Translation
- Into English with AI assistance; names of linked operators and aircraft types from Wikidata. It may contain errors.
- Revision
- 76908076 · 2025-05-31 · retrieved 2026-09-19
- Wikidata
- Q24941578
- 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
- pl Wikipedia article "Katastrofa lotnicza w Giebni" (page 3502311, revision 76908076), translated into English with AI assistance
- Date
- Wikipedia infobox: date
- Place and country
- Wikipedia infobox: site; country from Wikidata (P17)
- 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
- operator named as an armed force or military unit in the infobox
- Fatalities
- Wikipedia infobox: aircraft fatalities
- Ground fatalities
- not stated in the Wikipedia infobox
- Summary
- Wikipedia infobox: summary
Source notes (1)
- Wikipedia · Facts from the Polish Wikipedia article's infobox, translated into English with AI assistance, not checked against an investigation report. Independent review pending.