A terrain awareness system provides LOOK-AHEADLOOK-DOWN as well as LOOK-UP terrain advisory and warning indications to the pilot of an aircraft of a hazardous flight condition. A first tubular is disposed coaxially within a portion of a second, larger tubular. As a result of tolerance fluctuations in production, excessively high pressures can occur in the receptacle here, which pressures can cause cracks in the receptacle. The server receiving the request includes a private branch exchange and one or more other servers hosted by or coupled to the enterprise.