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OPERATING COSTS

The following table summarizes operational cost for LongEZ N961EZ over the last 8 years. I've reviewed my log books, receipts and a little bit of educated guess to come up with these numbers.

This chart does not include the initial cost of the plane, nor are upgrade components included, i.e. adding autopilot, electronic ignition, or a second comm radio. Probably the only item that could fall into either category (new vs operation) is the propeller.

The Airplane was New with the Great American propeller. A Prince prop was added after several hindered hours as an upgrade. Unfortunately, the prop was destroyed by an exhaust valve that went thru it. (this event also initiated the major overhaul of the engine)

An IVO prop was purchased after this, but was removed, and purchase price refunded following blade clamping issues that could not be resolved.

The MT prop was purchased at this time.

The Great American has always served as my backup prop, and was sent off to get it overhauled.

TOTAL HOURS

>

2600

Per Month

Per Year

TOTAL MONTHS

>

96

TOTAL YEARS

>

8

AVERAGE FLIGHT HOURS >

27

325

QNTY

UNIT

TOTAL

Per Hour

Per Month

Per Year

FUEL

100LL

5723

$2.35

$13,449.05

$5.17

$140.09

$1,681.13

Auto

14372

$1.25

$17,965.00

$6.91

$187.14

$2,245.63

LANDING GEAR

MAIN Tires

12

$85.00

$1,020.00

$0.39

$10.63

$127.50

Tubes

4

$24.00

$96.00

$0.04

$1.00

$12.00

Nose Tires

4

$35.00

$140.00

$0.05

$1.46

$17.50

tubes

2

$18.00

$36.00

$0.01

$0.38

$4.50

Brake pads (each)

56

$10.00

$560.00

$0.22

$5.83

$70.00

brake disks

4

$100.00

$400.00

$0.15

$4.17

$50.00

Brake O-Rings / bleed

18

$2.85

$51.30

$0.02

$0.53

$6.41

Nose Gear Retract gear

1

$40.00

$40.00

$0.02

$0.42

$5.00

Nose Gear tire rim

1

$180.00

$180.00

$0.07

$1.88

$22.50

Nose Gear Fork Assembly

1

$170.00

$170.00

$0.07

$1.77

$21.25

INSTRUMENTS

Altimeter

1

$280.00

$280.00

$0.11

$2.92

$35.00

Garmin 250XL updates

1

$250.00

$250.00

$0.10

$2.60

$31.25

ENGINE

MAJOR OVERHAUL

Crankshaft

1

$7,000.00

$7,000.00

$2.69

$72.92

$875.00

Cylinders New Millenium

4

$1,200.00

$4,800.00

$1.85

$50.00

$600.00

Cam / lifters / followers

1

$1,400.00

$1,400.00

$0.54

$14.58

$175.00

Case Rework

1

$1,100.00

$1,100.00

$0.42

$11.46

$137.50

bearings, tubes, gaskets

1

$1,300.00

$1,300.00

$0.50

$13.54

$162.50

OIL

AeroShell 100

169

$2.20

$371.80

$0.14

$3.87

$46.48

Castrol GTX 20-50

394

$1.10

$433.40

$0.17

$4.51

$54.18

Filters

Oil Filter Fram 48108

55

$14.50

$797.50

$0.31

$8.31

$99.69

Air Filter (85 Fiero)

10

$4.60

$46.00

$0.02

$0.48

$5.75

Pitot Static (Fram G2)

5

$2.50

$12.50

$0.00

$0.13

$1.56

Cylinder (Titan)

1

$900.00

$900.00

$0.35

$9.38

$112.50

Magneto (left)

3

$795.00

$2,385.00

$0.92

$24.84

$298.13

Carburetor

1

$570.00

$570.00

$0.22

$5.94

$71.25

Exhaust system

1

$600.00

$600.00

$0.23

$6.25

$75.00

Alternator Belt

4

$3.46

$13.84

$0.01

$0.14

$1.73

Starter (92 Toyota)

1

$53.00

$53.00

$0.02

$0.55

$6.63

SPARK PLUGS

REM2Y

12

$20.00

$240.00

$0.09

$2.50

$30.00

Autolite 395

16

$1.00

$16.00

$0.01

$0.17

$2.00

Ignition sensor (Jeff Rose)

1

$45.00

$45.00

$0.02

$0.47

$5.63

Auto Plug wire set (8 wires)

1

$39.00

$39.00

$0.02

$0.41

$4.88

Magneto plug wire set (4 wires)

1

$145.00

$145.00

$0.06

$1.51

$18.13

EGT thermocouples

7

$23.00

$161.00

$0.06

$1.68

$20.13

CHT Thermocouples

5

$11.00

$55.00

$0.02

$0.57

$6.88

Throttle cable assembly

1

$35.00

$35.00

$0.01

$0.36

$4.38

PROP

Great American (GA)

1

$485.00

$485.00

$0.19

$5.05

$60.63

GA Overhaul

1

$145.00

$145.00

$0.06

$1.51

$18.13

Prince

1

$1,400.00

$1,400.00

$0.54

$14.58

$175.00

IVO (Purchase price refunded)

1

$0.00

$0.00

$0.00

$0.00

$0.00

MT

1

$9,500.00

$9,500.00

$3.65

$98.96

$1,187.50

MISC STUFF

Nuts Bolts Screws

1

$150.00

$150.00

$0.06

$1.56

$18.75

O2 refills (ESTIMATE)

1

$400.00

$400.00

$0.15

$4.17

$50.00

Parachute Repacks

10

$65.00

$650.00

$0.25

$6.77

$81.25

Travel to retrieve grounded aircraft

1

$450.00

$450.00

$0.17

$4.69

$56.25

FIXED COSTS

Hangar (Per month)

96

$185.00

$17,760.00

$6.83

$185.00

$2,220.00

Insurance (per Year)

8

$570.00

$4,560.00

$1.75

$47.50

$570.00

Taxes (per year)

8

$175.00

$1,400.00

$0.54

$14.58

$175.00

Pitot & Mode C certifications

4

$125.00

$500.00

$0.19

$5.21

$62.50

TOTAL

$94,056.39

$36.18

$979.75

$11,757.05

QNTY

UNIT

TOTAL

Per Hour

Per Month

Per Year

UPGRADES

Jeff Rose Electronic Ignition

1

$850.00

$850.00

$0.33

$8.85

$106.25

Nav Aid Autopilot

1

$1,200.00

$1,200.00

$0.46

$12.50

$150.00

Garmin 25XL Comm/GPS

1

$1,800.00

$1,800.00

$0.69

$18.75

$225.00

Matco Master Cylinders

2

$130.00

$260.00

$0.10

$2.71

$32.50

Oil Heat system

Oil cooler

1

$380.00

$380.00

$0.15

$3.96

$47.50

blower

1

$35.00

$35.00

$0.01

$0.36

$4.38

hoses and fittings

1

$75.00

$75.00

$0.03

$0.78

$9.38

TOTAL

$4,600.00

$1.77

$47.92

$575.00

OVERHAUL COSTS

EZLift Nose gear assy

1

$1,800.00

Infinity Main Gear

1

$5,500.00

Danon EFIS

1

$2,000.00

E-Mag electronic ignition

1

$900.00

Glass - epoxy

1

$340.00

Paint job

1

$2,500.00

NEW COWLING

Foam

aluminum

epoxi

Grove Brake assemblies

1

$550.00

Flush rudder plans

1

$20.00

tubing, metal, etc

Aux Battery

switches, wire, etc


The intent of the "Per Hour" column is not to make efficiency comparisons between fuels or oils, but to come up with a true "how much has each hour of operation cost, and what contributed to these costs.

This is all of my costs ($94,000) divided by my total hours (2600), So , The average hourly cost of owning and operating my airplane has been $36.18 per hour.

During this 2600 hours, I burned 5723 gallons of 100LL, This fuel cost $13,500. So, Averaged out over the 2600 hours, I spent $5.17 per hour on 100LL.

During this same 2600 hours, I burned almost 3 times that amount in car gas that cost $18,000, The Car gas cost averages out to $6.91 per hour of the total cost. The reason the Per hour cost is higher, is because I burned almost three times the amount, OVER THE 2600 HOUR PERIOD.

You may also see the same thing for Oil. Over the 2600 hour flying period, Aeroshell cost 0.14 vs the 0.17 for Castrol GTX 20x50. The same reason applies here. You'll see that I only used 169 quarts of the Aeroshell, but 394 quarts of the Castrol.

It would be fairly easy to compute the actual cost differential between burning 100LL vs Car gas, with the data I provide.

Assuming for this calculation that car fuel and 100LL have the same energy content. I burned a total of 20,095 gallons of fuel for 2600 hours.

If I had purchased ONLY 100LL, the total cost would be $47,223, or $18.16 per hour.

If I had purchased ONLY Auto, the total cost would be $25,118, or $9.60 per hour.

I hope this helps in clarifying this.

Waiter






























































































































































































































































































































































































































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