Tried searching, so if already in a thread, pls post a link
Otherwise, I always recall engine costs were relatively minor component of fleet commonality. I've noticed they are now quite significant. For the F27, the monthly engine maintenance is more than the air frame maintenance. I Might be crazy, but it always seemed like it was about 25-33% of the plane commonality cost vs closer to 80%+ now. Is this a recent change or I'm just not remembering this correctly?
hmmmm ... I have a single fleet type in GW1 and fleet commonality costs of airframe and engines are the same! I would have thought engines would be cheaper as you said.... or airframes more expensive?
Mike
don't know. GW2, my comm costs :
Quote
Il-18
Number of aircraft in fleet 21
Administrative costs / month 44 498 USD
Fixed maintenance costs / month 323 111 USD
Crew training / month 243 429 USD
Total 611 038 USD
Viscount
Number of aircraft in fleet 14
Administrative costs / month 21 200 USD
Fixed maintenance costs / month 124 899 USD
Crew training / month 109 146 USD
Total 255 245 USD
Engines
AI-20M
Number of aircraft in fleet 21
Number of engines in fleet 84
Fixed maintenance costs / month 386 859 USD
Dart RDa.6 Mk.510
Number of aircraft in fleet 14
Number of engines in fleet 56
Fixed maintenance costs / month 151 343 USD
so I pay nearly the double for birds than for engines. Seems OK to me.
Now GW3, with a far more complex fleet structure, especially in terms of engines :
Quote
A320
Number of aircraft in fleet 112
Total 5 344 685 USD
B767
Number of aircraft in fleet 67
Total 10 325 157 USD
S2000
Number of aircraft in fleet 879
Total 28 275 110 USD
Engines
CFM56-5B2
Number of aircraft in fleet 1
Number of engines in fleet 2
Models using engines Airbus A318/A319/A320/A321
Fixed maintenance costs / month 152 903 USD
CF6-80C2
Number of aircraft in fleet 36
Number of engines in fleet 72
Fixed maintenance costs / month 1 205 279 USD
V2533-A5
Number of aircraft in fleet 69
Number of engines in fleet 138
Fixed maintenance costs / month 1 110 945 USD
PW1100G
Number of aircraft in fleet 42
Number of engines in fleet 84
Fixed maintenance costs / month 672 685 USD
PW4062
Number of aircraft in fleet 30
Number of engines in fleet 60
AE-2100A
Number of aircraft in fleet 879
Number of engines in fleet 1758
Fixed maintenance costs / month 9 211 346 USD
RB211-524H
Number of aircraft in fleet 1
Number of engines in fleet 2
Models using engines Boeing 767
Fixed maintenance costs / month 167 555 USD
880 aircraft are using Rolls-Royce engines.
harder to read, but seems like the engines costs are even lower. Which fits with the fact that in the later ages, I'm flying bimotors, while in the ancient times, I do fly quadrimotors. The most readable is for my huge fleet of S2000 : I pay 3 for birds, 1 for engines.
Quote
DC6
Number of aircraft in fleet 56
Administrative costs / month 21 648 USD
Fixed maintenance costs / month 273 676 USD
Crew training / month 364 374 USD
Total 659 698 USD
Constellation
Number of aircraft in fleet 159
Administrative costs / month 24 938 USD
Fixed maintenance costs / month 695 456 USD
Crew training / month 1 002 036 USD
Total 1 722 430 USD
Total: ~ 2.38m
Quote
Engines
Double Wasp R2800
Number of aircraft in fleet 56
Number of engines in fleet 224
Fixed maintenance costs / month 481 454 USD
R3350-956C
Number of aircraft in fleet 19
Number of engines in fleet 76
R3350-972TC
Number of aircraft in fleet 126
Number of engines in fleet 504
R3350-988
Number of aircraft in fleet 14
Number of engines in fleet 56
Fixed maintenance costs / month 1 430 818 USD
Total: ~1.91m
This is in GW1, definitely a much higher proportion of overall commonality costs coming from engines than I remember.
QuoteA32x
Number of aircraft in fleet 171
Administrative costs / month 103 570 USD
Fixed maintenance costs / month 2 909 622 USD
Crew training / month 8 736 994 USD
Total 11 750 186 USD
757
Number of aircraft in fleet 305
Administrative costs / month 148 735 USD
Fixed maintenance costs / month 6 981 540 USD
Crew training / month 5 981 438 USD
Total 13 111 713 USD
777
Number of aircraft in fleet 316
Administrative costs / month 167 364 USD
Fixed maintenance costs / month 10 795 959 USD
Crew training / month 34 949 538 USD
Total 45 912 861 USD
TOTAL: 70.77QuoteGE90
GE90-110B1
Number of aircraft in fleet 180
Number of engines in fleet 360
Models using engines Boeing 777
GE90-115B
Number of aircraft in fleet 21
Number of engines in fleet 42
Models using engines Boeing 777
GE90-92B
Number of aircraft in fleet 65
Number of engines in fleet 130
Models using engines Boeing 777
Fixed maintenance costs / month 5 485 273 USD
V2500
V2527-A5
Number of aircraft in fleet 54
Number of engines in fleet 108
Models using engines Airbus A318/A319/A320/A321
V2533-A5
Number of aircraft in fleet 92
Number of engines in fleet 184
Models using engines Airbus A318/A319/A320/A321
Fixed maintenance costs / month 1 688 266 USD
PW1000G
Number of aircraft in fleet 25
Number of engines in fleet 50
Models using engines Airbus A318/A319/A320/A321
Fixed maintenance costs / month 389 739 USD
PW2000
PW2040
Number of aircraft in fleet 222
Number of engines in fleet 444
Models using engines Boeing 757
PW2043
Number of aircraft in fleet 29
Number of engines in fleet 58
Models using engines Boeing 757
Fixed maintenance costs / month 4 368 310 USD
RB211
RB211-535E4B
Number of aircraft in fleet 54
Number of engines in fleet 108
Models using engines Boeing 757
Fixed maintenance costs / month 1 023 625 USD
Trent
Trent 890
Number of aircraft in fleet 50
Number of engines in fleet 100
Models using engines Boeing 777
Fixed maintenance costs / month 1 120 877 USD
TOTAL: 14.07In GW#4, 4 to 1 ratio
Quote from: spiff23 on July 04, 2019, 05:08:25 PM
Tried searching, so if already in a thread, pls post a link
Otherwise, I always recall engine costs were relatively minor component of fleet commonality. I've noticed they are now quite significant. For the F27, the monthly engine maintenance is more than the air frame maintenance. I Might be crazy, but it always seemed like it was about 25-33% of the plane commonality cost vs closer to 80%+ now. Is this a recent change or I'm just not remembering this correctly?
Not sure how yours is closer to 80% for your F.27's - my engine maintenance is less than 50% of the airframe cost.
DC6
Number of aircraft in fleet 165
Administrative costs / month 38 230 USD
Fixed maintenance costs / month 1 105 437 USD
Crew training / month 1 338 715 USD
Total 2 482 382 USD
Double Wasp R2800
Number of aircraft in fleet 165
Number of engines in fleet 660
Models using engines Douglas DC-6
Fixed maintenance costs / month 2 144 184 USD