The document discusses reducing noise levels when deflating aircraft wheels, which can reach 117 dBA. It recommends using either a Saf-Deflat-Aer or Easi-Deflat-Aer tool from Kestrel Engineering Ltd to safely lower pressures from 195 PSI. These tools have been used on wheels from aircraft like Boeing 747s, 787 Dreamliners, Embraer E195s, and Airbus A320s.

1. Reducing Noise During Aircraft
Wheel Deflating Activities
Use a Saf-Deflat-Aer or Easi-Deflat-
Aer

2. The Problem
• Noise Level of 117 dBA when deflating a
Boeing 747 Main Wheel pressurised to 195 PSI

3. The Solution No. 1
• Use a Saf-Deflat-Aer Model 1 PN 320008A
from Kestrel Engineering Ltd
Note: The same tool
can also be used for
the new Boeing B787
Dreamliner.

4. The Solution No. 2
• Use an Easi-Deflat-Aer Model 1 PN 320009A
from Kestrel Engineering Ltd

5. Can the tools be used for
other aircraft?
Yes, For example : The
Embraer E195 Series
wheel illustrated here.
The tool actually attached
to Aer Lingus Airbus A320
Main Wheel.

6. Which other airlines are
using the products?

7. Where can I obtain information
and purchase the products?