An aerial view of runways at Kennedy Airport. (Jan. 26,...

An aerial view of runways at Kennedy Airport. (Jan. 26, 2012) Credit: Craig Ruttle

Hundreds of air passengers and staff were evacuated from a terminal at New York City's Kennedy Airport after a metal detector malfunctioned at one of the security checkpoints.

The Transportation Security Administration says it closed Kennedy's Terminal 7 for about two hours Saturday morning after discovering the equipment problem and realizing that people had been let through without being properly screened.

Procedures call for the entire terminal to be emptied and the passengers re-checked whenever that happens.

Some travelers have posted photographs on Twitter showing the terminal lobby jammed with people waiting to get back in.

The Port Authority of New York and New Jersey says the screening checkpoints were reopened to passengers by 11:45 a.m.

The terminal is used by British Airways, United, and other airlines.

Deadly North Bellport shooting ... Blakeman's pitch to slash income tax ... Carle Place revitalization Credit: Newsday

Up close with Gilgo killer's court officer ... Deadly North Bellport shooting ... Jericho football forfeits season ... Picture This: 1996 Yankees

Deadly North Bellport shooting ... Blakeman's pitch to slash income tax ... Carle Place revitalization Credit: Newsday

Up close with Gilgo killer's court officer ... Deadly North Bellport shooting ... Jericho football forfeits season ... Picture This: 1996 Yankees

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME