Performance

No Operational Restrictions
Gulfstreams outfitted with the QS3 Hushkit meet the Stage 3 requirements without any operational restrictions. That means the airplane can take off at Max Gross Weight with normal flap settings and no reduction of EPR.

Extensive calibrated testing confirmed the engine performs exactly the same at all settings with the QS3 Hushkit installed.

In-Cabin Noise Reduction
An additional benefit of the unique cascade-style thrust reversers is the decrease in noise levels within the cabin of the aircraft. Our reversers are 41% more efficient than the OEM target-type units, resulting in the striking noise reduction and a marked increase in passenger comfort. Test results confirmed our observations, see the results by clicking here.

Noise Certification

Noise Level Standard	Approach Limit	Sideline Limit	Flyover Limit
Pre-Huskit Stage 2 Levels	102.0 dB	102.0 dB	93.0 dB
Required for Stage 3 Certification	98.0 dB	94.0 dB	89.0 dB
STC Validated GII Noise Levels	96.5 dB	95.7 dB	82.6 dB
Stage 3 Exceedance1	none	1.7 dB	none
Cumulative Levels Measured	Stage 3 minus 6.2 dB

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1. Maximum Exceedance allowed is 2 dB at any one point; cumulative Exceedance must be zero or less.