Investigation Summary
The flight was a routine reconnaissance training exercise originating from Poznan-Lawica Air Base. While flying over the Staroleka district, the crew reported the failure of the right engine. Shortly thereafter, the left engine also failed, leaving the aircraft without power. Witnesses reported the pilot attempting to steer toward open areas near the Warta River, but he reportedly diverted to avoid children playing football in the Legi Debinskie area. The aircraft eventually lost control, clipped the roof of the Workers' Work Cooperative (Robotnicza Spoldzielnia Pracy) building, and struck the embankment of the Queen Jadwiga Bridge, which was then under construction. The force of the impact sent the aircraft upwards, where it hit a tram power line pole before falling onto the street. The impact caused the fuel and ammunition to explode, resulting in a massive fire that damaged surrounding buildings and trees. While the bridge embankment is the generally accepted impact point, historical accounts and witness testimonies cited by the Institute of National Remembrance (IPN) place the final crash site slightly further north near the intersection of Strzelecka and Krakowska Streets. The disaster was immediately cordoned off by the Ministry of Public Security, and all mentions of the event were censored in the press and radio for decades.
Final Conclusions
The official commission, led by Soviet General Ivan Turkiel, concluded its investigation in just three days on June 13, 1952. The report acknowledged a technical failure of the right engine cylinder sleeve seals but primarily blamed the pilot for panicking and mishandling the emergency landing. However, modern historical analysis by the Institute of National Remembrance (IPN) and journalist Krzysztof M. Kazmierczak suggests the crash was caused by systemic mechanical failures. Order No. 0157, issued just days after the crash, mandated urgent inspections of all Pe-2 engines for cylinder seal leaks, leading to the repair or replacement of numerous engines across the fleet.
Video Analysis
No video analysis linked for this case file yet.
Systems & Failure Modes
Klimov M-105 Engines
The aircraft's liquid-cooled V12 engines suffered from unsealing of the cylinder liners, a defect that led to the failure of both engines during the flight.
Onboard Armament
The aircraft was carrying live ammunition which exploded upon impact, increasing the severity of the fire and ground damage.
Interesting Facts
- 01The crash resulted in 9 total fatalities: 3 crew members and 6 civilians on the ground.
- 02Approximately 10 to 12 people on the ground sustained injuries during the accident.
- 03The accident was classified and suppressed by Polish communist authorities for 56 years.
- 04The investigation commission was composed of four Soviet officers and only one Polish officer.
- 05A memorial containing a fragment of the original fuselage was unveiled at the crash site in 2008.
- 06Post-accident inspections revealed that multiple Pe-2 engines in the regiment required immediate repair or replacement due to the same seal defect.
Safety Actions & Advisories
Order No. 0157
Following the crash, the Air Force Command ordered the immediate inspection of all Pe-2FT aircraft engines for cylinder sleeve seal tightness, resulting in the dismantling of six engines and the replacement of seven engine blocks.
Known Controversies & Unanswered Questions
Official Blame vs. Technical Flaw
Reference ↗The 1952 commission blamed the pilot for panicking, but historical evidence of widespread engine defects and the immediate issuance of repair orders suggest the crash was caused by mechanical failure and poor maintenance of Soviet-made equipment.
Falsification of Documents
Reference ↗In 2007, the Institute of National Remembrance (IPN) launched an investigation into the potential falsification of documents by security officials to obscure the true causes of the crash.