Ryanair 737-800 Engine Failure Causes In-Flight Decompression

In-Flight Decompression Over North Macedonia

A Ryanair flight operated by subsidiary Malta Air suffered a critical safety event on July 10, 2026, when a Boeing 737-800 experienced an uncontained engine failure. The incident occurred during a flight from Thessaloniki (SKG) to Memmingen, Germany, when the aircraft’s right CFM International CFM56-7B engine suffered a suspected fan blade failure. Debris from the engine struck the fuselage, shattering a cabin window and causing immediate rapid decompression at approximately 16,000 feet. The aircraft subsequently executed an emergency descent to 6,000 feet to stabilize cabin pressure and manage fuel levels.

Passenger Impact and Emergency Response

The decompression event resulted in the partial ejection of 61-year-old Serbian passenger Ljubisa Karovic, who was seated in the window seat adjacent to the affected panel. According to accounts from his wife, Svetlana Maksimovic, the force of the cabin pressure differential pulled the passenger partially through the aperture. Fellow passengers and his wife successfully intervened, pulling him back into the cabin while the aircraft descended. Mr. Karovic is currently receiving treatment in a Thessaloniki hospital for severe neck and arm injuries.

Regulatory Context and Investigation

The AAIIC (Aircraft Accident and Incident Investigation Committee) of North Macedonia is leading the formal probe, as the event occurred within its airspace. The NTSB (National Transportation Safety Board) and the EASA (European Union Aviation Safety Agency) are actively participating in the investigation due to the U.S. origin of the aircraft and engine manufacturing. Boeing has confirmed its collaboration with investigators to determine the exact cause of the fan blade failure. The aircraft currently remains in Greece pending further forensic analysis by air accident investigators.

Technical Analysis: CFM56-7B Containment

This incident highlights ongoing industry concerns regarding CFM56-7B engine fan blade metal fatigue. The current regulatory framework includes FAA (Federal Aviation Administration) Airworthiness Directives FAA-2023-2234 and FAA-2023-2236, which mandate the redesign and retrofit of engine nacelles and fan cowls. These measures are intended to contain debris during fan blade-out events. The industry is currently in a transition period ahead of the mandatory July 31, 2028, compliance deadline. Aerospace analyst Mike Dunlop noted that while engine manufacturers design units to contain such failures, the rarity of this specific sequence underscores the necessity of the ongoing retrofit program. The event bears strong technical parallels to the 2018 Southwest Airlines Flight 1380 incident, which also involved a fatal partial ejection following a CFM56-7B fan blade failure.

What Comes Next: Investigation Milestones

The investigation remains in its early stages as authorities gather flight data recorder information. The AAIIC is expected to release a preliminary accident investigation report by August 2026. Following this, the aviation industry will continue to monitor the progress of FAA-mandated engine nacelle retrofits. Operators of the Boeing 737 Next Generation fleet may face increased pressure to accelerate inspection schedules for fan cowl and inlet integrity to mitigate further risks before the 2028 deadline.

Why This Matters for Aviation Safety

The incident serves as a significant stress test for existing safety protocols regarding engine nacelle containment. For CFM International and Boeing, the event mandates a re-evaluation of the timeline for fleet-wide component upgrades. For passengers and operators, the event underscores the critical nature of in-flight decompression risks and the reliance on structural containment systems to prevent catastrophic cabin breaches.