Search found 1 match

by PhotographyNYC
Tue May 19, 2020 8:00 pm
Forum: Technical/Operations
Topic: McDonnell Douglas PA system
Replies: 1
Views: 1179

McDonnell Douglas PA system

Whenever I fly on a MD-80 or 88 or 90 (especially delta) whenever the intercom system is in use there’s A continuous whiny sound in the background, what is that, and why is it only on MD airplanes?

Jump to post