MALVERNE, N.Y. (CBSNewYork) — One Malverne couple was enjoying the mild night Thursday when they became covered by sludge as a plane taking off from Kennedy Airport flew overhead.

“A plane was coming over. Next thing you know she says ‘Oh my God it’s raining.’ I said ‘No it’s not’,” Artie Hughes told 1010 WINS’ Sonia Rincon.

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“Some black liquid, black oil came off on her face, and I walked around and I looked and said ‘Oh my God.’ There was quarter-sized, nickel-sized, dime-sized drops all over my deck, my barbecue, my table,” he said.

LISTEN: 1010 WINS’ Sonia Rincon reports

Thinking something was wrong with the plane, they called police.

“It was oily in substance, blackish-greenish oil. I thought it was hydraulic fluid and then the policeman came down and said ‘No I don’t think so. Looks like something nastier than that’,” Hughes said.

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The officer suspected it was most likely treated sewage, returning after making several phone calls for confirmation.

“He had spoken to somebody down at either the Port Authority or the FAA and said ‘Yeah, it looks like there was an incident,” he said. “Some lavatory excrement had leaked out.”

The couple tell Rincon they just want an explanation, and for this kind of incident to not happen again.

“I think they should investigate and find out what happened,” Hughes said. “Was a button pushed? Was the lavatory filled to capacity before it left the ground?”wondered.

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