How much of a difference?
And that perhaps it's time to get rid of the aircraft or get out of aviation altogether.What is your response?
But as you are probably aware several factors can make the representative's comparison a bad one.You will probably want to clarify several points to make sure the comparison is valid. However, realize that using cost per hour has a fundamental shortcoming.As mentioned in the first scenario, total annual maintenance costs or the number of flight hours can affect the resulting maintenance cost per flight hour. These aircraft cost an estimated $1,500 and $11,500 per hour to operate, respectively.Photo by Yael Havia Israeli Air Force 420th (“Fighter Simulator”) Squadron at Hatzor AFB, at …Maintenance / operating costs per flight hour of Military’s Fighter jets This is a very likely situation in a year of heavy scheduled maintenance. However, the increase in maintenance costs per flight hour is compounded if you experienced both a reduction in flight hours and an increase in maintenance costs in a given year. But while you are aware of this difference from a technical perspective, you may not be aware of the related cost differences.
Most of you have been in the industry so long that you do not remember your initial reaction to the expensive nature of aircraft maintenance. maintenance man-hours per flight hour must not exceed 11.5 or a penalty will be imposed. If maintenance man-hours per flight hour reach 13, the contractor must pay the Navy a penalty of $50 per hour; if the figure reaches 17 the Navy is to receive $700 per hour. A Comparison of KC-135 Cost per Flying Hour, Cost per Aircraft, and Cost per Fleet Since Fiscal Year 1996 ... impacted by flying hours such as depot-level maintenance costs. He states that the executive team has been reviewing the maintenance costs for the last year and has concluded that the current aircraft is too expensive to operate. Can you point out to the representative that in actuality, the average cost per year over the 11-year period is about 33 percent of the cost of the most recent year? In 1991, Army aircraft required upwards of 10 man-hours of maintenance time for every flight hour (McClellan, 1991, p. 31), while today the average is over 16 man-hours for every flight hour. Listed below are some of the factors that could explain the differences. Viewing costs from a slightly different perspective could help with budgeting.Figure 2 takes the total maintenance costs as shown in Figure 1 and breaks out the scheduled costs so that what remains are the on-condition costs. Rather than using maintenance cost per flight hour, build your budget on predicted total maintenance costs, which should yield a more accurate estimate.For this scenario, let's assume that the information in Figure 1, maintenance costs per flight hour, is all that you have to work with.
It can also refuel aerially and fit up to 112 passengers.Surprisingly, the much-maligned F-35 is only the seventh most expensive plane per hour that the Air Force flies. Is this a possible cause of the high maintenance cost per flight hour in the 11th year?If this were the situation in the 11th year, then perhaps you would want to discuss this with management so that an important decision is not based upon an incorrect assumption about the behavior of maintenance costs.It is doubtful that your financial folks would appreciate this error in estimation.
The second, which is less obvious, deals with the behavior or timing of maintenance costs as an aircraft or the fleet accumulates flight hours.Maintenance costs will vary according to the class of aircraft, for example jets vs. turboprops vs. pistons vs. helicopters. If one inspection requires more time and parts to complete than another, then the cost should also be greater.
If the maintenance requirement is higher still, then the airplane
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