freedom,
Has it ever occured to you that having a mechanic at the gate during pushback is the one time that a mechanic can most effectively prevent a delay?
An individual on the headset, in direct communication with the Pilot, that has the technical expertise and the license for the advice offered prevents a large portion of the delays that would otherwise normally occur.
While those in the cockpit are licensed and supremely aquited to perform their individual tasks, many cannot and should not concern themselves with the entire operational systems required to safely perform flight operations. Simply stated, pilots are hired to fly aircraft and within the US transportation system do an extremely good job of doing so. The mechanics are charged with maintaining the reliability of that aircraft and have done an equally good job but are more familiar with the individual systems that are required for its' operation.
On more than one occasion, I've had the opportunity to interface with a flight crew that was experiencing and abnormality during the initial flight phase. If I had been able to offer my help earlier, a delay may have never occured.
Delays cost money. Saving money is the name of the game. This does not mean that the wing walkers need to be mechanics but it does mean that during the crucial period that exists just prior to a pushback and during the pushback; a licensed mechanic should be readily available.
The only way to ensure that a mechanic is available is to have him pushing the aircraft.
The other opportunity is during the arrival of a flight. A licensed mechanic that guides in an aircraft and then debriefs the flight crew as to the status of the aircraft ensures that any anomaly noted is dealt with before the outbound crew arrives. Again, the only way to ensure that the individual is available is for him to be assigned to direct the aircraft in to the gate.
TRY AGAIN.