Final answer:
The action to take when tire pressure is at 224±5 psi depends on the aircraft's guidelines; it may require adjusting to recommended levels. Gauge pressure in tires is affected by temperature based on gas laws, and conversions between psi and atmospheres are possible using the appropriate factors.
Step-by-step explanation:
When the main landing gear tire pressure is at 224±5 psi, specific actions related to aircraft maintenance should be taken in accordance with the aircraft's maintenance manual or the tire manufacturer's specifications. The actual action depends on whether the pressure is within the acceptable range for the aircraft in question. If the tire pressure of 224 psi is within the acceptable range, it usually indicates that no immediate action is necessary other than to monitor the tire pressure regularly. However, if this tire pressure reading is outside the specified range, it may require inflation or deflation to the recommended pressure.
A tire pressure of 34 psi translates to an absolute pressure when combined with atmospheric pressure. At standard atmospheric pressure, which is 14.7 psi, the absolute pressure would be 48.7 psi. Similarly, a gauge pressure of 2.50 × 105 N/m^2 in car tires correlates with the tire's temperature. When the temperature drops, the gas laws predict that the gauge pressure will drop as well. Finally, to convert a tire pressure reading from psi to atmospheres, like the example of 35 psi, you would use the conversion factor where 1 atmosphere is equivalent to 14.7 psi.