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Condensation and associated moisture issues are greatly affected by seating density, load factor and utilization. A high utilization brings with it an increase in the time the structure is exposed to the lower temperatures that cause condensation. Furthermore, short turnaround times may not allow full evaporation or drainage of the condensed water to take place.
Careful maintenance of insulation blankets, particularly in the upper fuselage area will minimize un-insulated cold sinks and reduce condensation.
3.2.5.4.2. Removal of galley components
For certain types of short haul operations it can be appropriate to remove some or all water heaters / coffee makers and ovens from the aircraft’s galleys.  Hot water or beverages can be carried in insulated portable dispensers.
Component  Component Weight (varies with model)  Number fitted to aircraft (typical example)  Total Weight (typical configuration) 
Water Heater  up to 12 Kgs  2  up to 24 Kgs 
Coffee Maker  up to 18 Kgs  2  up to 36 Kgs 
Oven  up to 22 Kgs  4  up to 88 Kgs 
TOTAL  up to 148 Kgs 

Figure 3-32
Weight savings when removing galley components

Deletion of galley components is achieved through the application of the appropriate galley vendor service bulletin. Galley components may also be removed temporarily once approval from the galley manufacturer and the local aviation authority has been granted.

3.2.5.4.3. Safety Equipment
Safety equipment requirements are agreed between the aircraft operator and the local aviation authority. Typically, aircraft that are to be employed in over-water operations will be equipped with emergency slide rafts. However, for overland routes it may be possible to justify swapping slide rafts for basic slides.
Component  Component Weight  Total weight saving converting slides (4 per aircraft) from slide raft to basic slide = 128 Kgs 
Slide Raft  57 Kgs 
Basic Slide  25 Kgs 

Note: over-wing exits are equipped with basic slides only.
This initiative will bring fuel cost savings of around US$4,600 to US$8,500 per aircraft per year (varies with utilization and based on fuel at US$2.00 per US Gallon).
3.2.5.4.4. Potable water upload reduction
Aircraft of the A320 Family are equipped with a potable water tank that can hold up to 200 liters, i.e. 200 kgs. The tank is refilled via the servicing panel at lower left-hand side of the rear fuselage and tank contents are indicated on a gauge on the servicing panel and on the Forward Attendants Panel (FAP).
Some aircraft are equipped with a system that allows the tank to be refilled to a pre-selected level (25%, 50% or 75% full, i.e. 50, 100 and 150 liters). For aircraft not equipped with the pre-selection system a simple alternative can be developed if the flow rate of the refill system is known (e.g. if the refill rate is 10 liters every 20 seconds, and 50 liters is required, then a “100 second replenishment” will be needed).
　
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