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One passenger reported an iPhone being flushed down the toilet midair aboard 
Delta Air Lines flight 777 on Wednesday. The lavatory incident took place while the Boeing 757-200 was flying from 
Harry Reid International Airport (LAS) to 
Hartsfield-Jackson Atlanta International Airport (ATL), as The New Area 51 posted on X.
Fortunately, it appears that there was no risk of injuring any bystanders on the ground with a falling device from cruise altitude, as A View From The Wing reported. The older 757 uses a recirculating waste system which deposited the smartphone into a septic tank in the belly hold. It also appears that the plane did not suffer damage and was able to depart for its follow-on flight on time, according to FlightAware.
The ‘Blue Juice’ Claims One Unlucky iPhone
Unlike newer jets like the Boeing 737 MAX or Airbus A320neo that use a high-powered vacuum system, older 757s are equipped with a recirculating waste system directly beneath each toilet bowl. The particular aircraft in question, tail number N658DL, is a 36-year-old airframe. The incident gained viral attention online after an official aviation Electronic Logbook (ELB) maintenance write-up was leaked and shared on social media.
It’s unclear if the passenger report was from the owner of the device or if it was from another concerned traveler who may have been privy to what was going on inside the lavatory for some reason. The iPhone did not get sucked out of the plane mid-flight. It simply dropped straight into the ‘blue juice’ waste tank located directly beneath the toilet.
The toilet’s flush motor and internal mechanisms remained functional, meaning the bathroom did not overflow or immediately fail during the flight. The plane landed safely at Atlanta International at 5:44 PM. Once on the ground, ground crews and maintenance teams successfully drained the waste system to resolve the issue and locate the phone. The blunt, concise ELB entry read:
“RECENT ELB WRITE UP ON TOILET. IT DOES FLUSH BUT IPHONE IS FLUSHED AND GONE.”
The Stakes Of ‘Oops Moments’ On High-Tech Jets
If an iPhone were flushed down the toilet of a modern aircraft like a 737 MAX or an A320neo, the outcome would be significantly different due to their high-powered vacuum waste systems. The newest single-aisle aircraft do not use the kind of recirculating waste filtration system seen on the 757. Because of the complex vacuum plumbing, it could be severely damaged by the kind of incident that took place on Wednesday.
It’s possible for a smartphone to get jammed into the flush valve at the bottom of the bowl in a newer plane or stuck in one of the sharp bins in the plumbing of modern aircraft lavatories. The extreme pressure differential used by the vacuum system could also pulverize the iPhone, which would introduce potentially destructive foreign object debris to the system.
If the phone remained intact and simply acted as a blockage within the piping, the jam could prevent the flush valve from sealing in the toilet or cause a pooling of gray water in the bowl. Either case would make the lavatory unusable for the rest of the flight until maintenance could repair it. If the plane had to be opened up for significant parts removal and replacement, the bill could add up to thousands of dollars.
High Financial Risk For A Lavatory Slip Up
According to A View From The Wing, it could cost several thousand dollars to repair a damaged valve, separator, or pump on a 757 if the smartphone led to a worst-case scenario. Similarly, fixing a major blockage or breakdown of the lavatory on a 737 MAX or A320neo is a maintenance nightmare compared to just draining a tank. This process takes hours. It almost always results in taking the aircraft out of service, leading to snowballing flight delays or cancellations.
Draining a septic tank on a 757 might take a couple of hours, but it gets even worse with the newer jets. Mechanics cannot easily fish a phone out of a vacuum line. They often have to remove cabin panels, cut into the cargo bay, or completely disassemble sections of the titanium waste piping to find the blockage.
It could take days for a hangar teardown of the tank and wastewater system. Adding the cost of labor to parts, the bill could come out to tens of thousands of dollars. What is even worse, though, is the loss of revenue for the airline due to the plane being out of service, which can add up to six figures.
Based on the intent of the passenger who caused the damage, they can in fact be held liable for these costs. It remains purely speculative as to why the iPhone ended up in the toilet on Wednesday’s flight. Luckily, whatever the reason, no significant harm was done, and the unfortunate soul aboard DAL777 will simply have to bear the cost of replacing their own phone.
