Srbmod From , joined Dec 1969, posts, RR:
Reply 5, posted (12 years 9 months 4 days 5 hours ago) and read 7550 times:
With the eyebrow windows removed, you also decrease MX costs as well. You don't have to worry about having to keep the parts for those windows, and less parts means less overhead. Those windows also do affect aerodynamics to an extent as well. They are a flat piece in an area that is curved, and those cause some drag because the airflow is disrupted because of the break in the curve.
PW100 From Netherlands, joined Jan 2002, 2778 posts, RR: 17
Reply 13, posted (12 years 9 months 4 days 2 hours ago) and read 7279 times:
Yes, Clipperhawaii, that's what they were used for.
Do you have some alternate theory to advance here?
YES. They were meant to stay visual with the runway when turning final. When at an angle to the runway, when banking, the runway would disappear out the side window due to the banking of the aircraft. These eyebrow windows made sure that the pilot [at least one of them...] would would stay visual in the banking turn.
Immigration officer: "What's the purpose of your visit to the USA?" Spotter: "Shooting airliners with my Canon!"
Sunilgupta From United States of America, joined Nov 2000, 789 posts, RR: 13
Reply 15, posted (12 years 9 months 4 days 1 hour ago) and read 7246 times:
Another reason the aircraft without the brow windows looks odd is that the the window frames are painted the same color as the fuselage. On most DC-9, MD-8x and 717's they are left natural metal. Anyone know why the frame is painted?
Fanoftristars From United States of America, joined Jul 2000, 1626 posts, RR: 4
Reply 19, posted (12 years 9 months 3 days 23 hours ago) and read 7115 times:
I believe PW1000 is right. I asked a DL Captain of a 737-300 why they needed the upper windows and he said it was to still be able to see the runway when turning on final and also for spotting other aircraft etc. Maybe in the 737 the main windows are positioned in a matter that would block their view normally.
I think anything that would help a pilot when flying couldn't be too bad of an idea... What if the navigation system goes out and they neet to get out thier sextant???
Justplanesmart From United States of America, joined Mar 2001, 726 posts, RR: 2
Reply 22, posted (12 years 9 months 3 days 23 hours ago) and read 7109 times:
Remember that the cockpit window arrangement on the 717 came from the DC-8 originally, and that of the 737 was straight from the 707. When both of those first-generation jets were introduced, navigators were still a regular part of the cockpit crew, especially for overseas flights. I doubt that the either the DC-9 or the 737 have ever carried a navigator, but the windows stayed until now.