Common use of Cockpit noise Clause in Contracts

Cockpit noise. At a pressure altitude of 35,000 ft and a Mach number of M=0.78 in still air under ISA conditions, the guaranteed A-Weighted Sound Pressure Level (SPL) will not exceed *** and the Speech Interference Level (SIL) will not exceed ***.

Cockpit noise. At a pressure altitude of 35,000 ft and a Mach number of M=0.78 M=0.82 in still air under ISA conditions, the guaranteed A-Weighted Sound Pressure Level (SPL) will not exceed *** and the Speech Interference Level (SIL) will not exceed ***.