Previous Codes Had Inadvertently Been Posted To A Public Website

United Airlines is changing the cockpit door keypad codes on all of its airliners after the previous set of codes were inadvertently posted to a public website.

MSN reports that in a memo to pilots, the airline instructed them to use "alternative security measures" to secure their cockpits, according to company spokeswoman Maddie King.

King said that the security breach did not cause any flight delays, nor was it due to hacking. "We are working to change the codes on all of our aircraft," she said.

The airline said in a statement that the keypad codes are not the only security measure employed by pilots to secure the cockpit, and that it was working to resolve the situation as soon as possible.

The airline regularly changes the codes, according to the report. But over the weekend, it rushed to make changes after the information became public.

Cockpit security became an issue after the terrorist attacks of September 11, 2001. ALPA said in a statement that the incident shows that secondary barriers are needed on all U.S. airliners. Such barriers had been installed on some United airplanes after 9/11, but removed them in 2012 citing costs, according to the report.

FMI: www.faa.gov/documentLibrary/media/Advisory_Circular/AC90-103.pdf