Solar Flares and Their Potential Impact on Airbus Planes

Aircraft manufacturer Airbus recently recalled thousands of its A320 family aircraft for a software fix, marking one of the largest directives in the company’s history. Interestingly, solar radiation is believed to be a significant factor in this situation.

The A320 has recently overtaken the Boeing 737 as the most delivered jetliner in history, and this recall has caused varying degrees of disruption for airlines across the globe. According to Airbus CEO Guillaume Faury, the recalls have led to “significant logistical challenges and delays.” The Colombian airline Avianca reported that more than 70% of its fleet was affected, resulting in the suspension of ticket sales for flights until December 8.

The impact was less severe in the United States. Delta and United Airlines reported minimal disruptions, while American Airlines confirmed that all 209 affected aircraft had received the necessary software fix.

Despite the lack of major disruptions in American air travel, the issue was highlighted by an incident in October involving an Airbus A320 operated by JetBlue, which experienced a sudden altitude drop while en route from Cancun, Mexico, to Newark, New Jersey, necessitating an emergency landing in Tampa, Florida.

Airbus stated on Friday that the recall was initiated after the company discovered that intense solar radiation could “corrupt data critical to the functioning of flight controls” in its A320s.

Specifically, an FAA directive indicated that the JetBlue flight encountered a malfunction in its elevator aileron computer (ELAC), which manages the aircraft’s pitch or nose angle. Airbus suspects that solar flares—intense streams of electromagnetic radiation from the sun—may have disrupted the data, leading to the ELAC malfunction and causing the aircraft to dive unexpectedly.

The fix for this issue involves a straightforward rollback to earlier software versions, although some jets might require complete hardware replacements.

Solar radiation poses a significant challenge for the aviation sector, particularly as the sun has been more active lately. In September, researchers noted that the sun could be entering an unexpected active phase, with a gradual increase in activity observed since 2008. Recently, the Earth experienced several violent solar flares, with the NOAA’s Space Weather Prediction Center identifying two as capable of causing widespread radio blackouts.

Space weather expert Tony Phillips suggested earlier this month that large sunspots had been generating solar flares “for weeks,” and there is “no reason to believe this activity will diminish.” In a blog post on Sunday, Phillips mentioned that a particularly large sunspot was now “turning to face Earth,” indicating that forthcoming solar flares could trigger geomagnetic disturbances.