From Multi-Engine Turboprop Communiqué ME-TP-0028
ATA 00-Cabin and Cockpit Noise Levels
The typical cockpit and cabin noise levels for certain model King Airs is as follows:
350i
The average cabin noise 81 dBA, average cockpit noise is 85.5 dBA at FL250 KIAS, 75% engine torque and 1500 propeller rpm.
B200/B200GT
Four blade propeller, average cockpit 83.3 dBA, average cabin 79.1 dBA at FL250 and 75% torque. Three blade propeller, average cockpit 88.7 dBA, average cabin 82.5 dBA at FL250 and 75% torque.
C90A, C90B
The average noise level is 83 dBA, at FL250 at 75% torque and propeller at 1900 rpm.
C90GT
The average noise level is 86 dBA, at FL250 at 75% torque and propeller at 1900 rpm.
ATA 00- Over Fly Noise Levels
Effectivity: All
The takeoff and landing noise levels for the King Air are in the airplane’s respective Pilot’s Operating Handbook Section 4 under Noise Characteristics.
Please be aware that Pilot’s Operating Handbooks on the older King Airs do not have this information as this information was not required by the FAA when these airplanes were certified.
The information provided in this column may be abbreviated for space purposes. For the entire communication, go to ww2.txtav.com/.