Michael B,
I'm not sure how these will format, but if you take the data into an excel page you should be able to compare the certified levels for these aircraft, I'm sorry but I dont have the DC-10 data.
Airplane/Engine/
Weight lbs/ WeightKgs/Flap/Takeoff/Sideline/Approach EPNdB
MD-11F/CF6-80C2D1F
Takeoff 630,500/285,990/10/94.7/96.2/---
Landing 481,500/218,405/50/---/---/104.5
B747-200&300/RB211-524D4/
Takeoff 833,000/377,842/10/104.1/99.7/---
Landing 630,000/285,762/30/---/---/104.9
B747-400/CF6-80C2B5F/
Takeoff 870,000/394,625/10/97.4/100.3/---
Landing 652,000/295,742/30/---/---/103.7
B727-100 JT8D-9A (Hushkitted)
Takeoff 169,500/76,883/5/94.0/97.3/---
Landing 142,500/64,637/30/---/---/98.8
747FOCAL, our rules are easy, we will listen to any presentation from a company, but not an individual, which class do you fall into?
Mutt.
[Edited for typos]
[ 13 January 2002: Message edited by: mutt ]</p>