Re: B 737-500 Depressurization Incident

Date:         30 Mar 99 01:54:04 
From: (D.M. Procida)
Organization: Posted through the Joint Cardiff Computing Service, Wales, UK
References:   1 2 3
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Malcolm Weir <> wrote:

> if the pressure increases faster than you can relieve it through
> techniques such as ... the Valsalva technique, the Fresnel technique (used
                             ^^^^^^^^                ^^^^^^^
> by dive bomber pilots) ...

What do these involve, please?

Daniele Procida