Cliff said:
Make sure whatever set you buy is STC'd for 135/121 ops.
The new Bose are not STC'd,, I fly with the Telex 5oo's and they are very good.. Lightspeeds don't last, nothing but problems..
I think you mean TSO'd. Anyway, the Bose X is TSO'd per their user manual.
FAA Technical Standards Order
The Bose® Aviation Headset X, its interface, cables, and electret boom
microphone are FAA approved to TSO C57a and C58a. It has been
designed to function in or withstand exposure to the following environmental
conditions:
Environmental categories cited refer to RTCA/DO-160C, December 4,
1989 and DO-214, March 4, 1993.
Condition Category
AF Conducted B
Susceptibility
Humidity B
Magnetic Effect Z
Power Input B
RF Susceptibility T
Temperature & Altitude A1
Vibration P & S
Voltage Spike A
Shock Drop 12 times, 1 m onto concrete
Brad