atlasair
Posts: 99
Joined: Sat Jun 05, 1999 11:43 pm

Total Cycles/time

Fri Feb 23, 2001 2:57 pm

hi,
can anyone tell me where I can find info on an aircraft total cycles or time.

I've heard that when an aircraft reaches a total time or cycles they must be retired. Well I was wondering what those figures were.

like for 747's and smaller aircraft

When is an aircraft too old to fly?

Thanx in advance
Atlas Air
 
boomer
Posts: 108
Joined: Thu May 27, 1999 2:59 am

RE: Total Cycles/time

Sat Feb 24, 2001 8:15 am

I know of no mandatory retirement age, flight hours, or cycles for any common aircraft. The decision to retire a particular aircraft is purely economic...how much is it costing to keep airworthy? There are several DC10 and B747 aircraft that have accumulated well over 100,000 flight hours. Several DC8 and some B737 aircraft are pushing their way to this threshold also. It is conceivable that some of the Ex-American and Ex-United DC10's being converted to freighters by FedEx will end up seeing over 200,000 flight hours before they hit the scrapyard.
 
tom2katie
Posts: 79
Joined: Sat Nov 11, 2000 8:58 pm

RE: Total Cycles/time

Sat Feb 24, 2001 12:03 pm

Many aircraft do have time and cycle limits, some of which do mandate retirement of components which may make it economically impossible to continue the aircraft in service. The Twin Otter has life limited wings. At 35,000 hours (or less for the 100/200 series), the wing boxes and mainframes must be replaced. Many operators choose to do this as there is no life limit on any other airframe component and the aircraft is not replaceable. At 40,000 cycles, 100 series Dash 8s must be sent back to the factory for extensive structural and fuselage bonding work, which is extremely expensive. Many operators choose to sell these aircraft prior to reaching this time limit. I would agree, however, that I have never heard of an airframe itself that is life limited. Most can be continued in service with a certain amount of inspection and repair.
 
JETPILOT
Posts: 3094
Joined: Tue May 18, 1999 6:40 am

RE: Total Cycles/time

Sat Feb 24, 2001 1:23 pm

Every single plane ever made has a design life limit.


Some of the design life limits are as follows:

747 20,000 cycles, 60,000 hours, or 20 years

767 no cylce limit, 100,000 hours, or 40 years

A300/310 36,000 cycles, 60,000 hours, or 20 years

L1011 115,000 cycles, 210,000 hours, or 20 years

DC10/10/30/40 42,000/30,000 cycles, 60,000 hours, or 20 years

The life limit of an airframe means that the airframe has been tested to these limits in simulation. Known issues found during testing have been dealt with and airworthiness directives issued. From what I understand the manufacturer must implement a maintenance program approved by the FAA to extend the life of the plane past the proven life limit.

The fleet leading planes in hours as of 07/99 are as follows:

747: 111,594
767: 66,920
L1011: 82,891
DC10: 106,743
A300: 53,419

JET
 
stephenelmy
Posts: 1
Joined: Fri Aug 26, 2016 11:36 pm

Re: Total Cycles/time

Fri Aug 26, 2016 11:39 pm

Getting back to the original question, does anyone know of an online database for commercial aircraft, listing total hours and cycles? In particular, I am looking for information on B-2059, an Air China B777-2J6 that was just retired.
 
Apprentice
Posts: 211
Joined: Sat Jan 19, 2013 12:51 pm

Re: Total Cycles/time

Sat Aug 27, 2016 2:00 am

China Aviation is based on Soviet one. Soviet planes's life limit is much more tough.,They used to explain it as they followed safety rules against commercial ones. Very difficult to find a 60 000 flt hrs russian plane. After 2nd D Check (Capital Check was named), next time a write off was most probably.
Rgds
A "NO" is a positive answer., "DON'T KNOW" is not. My Tutor
 
TNST3B
Posts: 8
Joined: Wed Jun 15, 2016 5:09 am

Re: RE: Total Cycles/time

Sun Aug 28, 2016 2:50 am

JETPILOT wrote:
Every single plane ever made has a design life limit.


Some of the design life limits are as follows:

747 20,000 cycles, 60,000 hours, or 20 years

767 no cylce limit, 100,000 hours, or 40 years

A300/310 36,000 cycles, 60,000 hours, or 20 years

L1011 115,000 cycles, 210,000 hours, or 20 years

DC10/10/30/40 42,000/30,000 cycles, 60,000 hours, or 20 years

The life limit of an airframe means that the airframe has been tested to these limits in simulation. Known issues found during testing have been dealt with and airworthiness directives issued. From what I understand the manufacturer must implement a maintenance program approved by the FAA to extend the life of the plane past the proven life limit.

The fleet leading planes in hours as of 07/99 are as follows:

747: 111,594
767: 66,920
L1011: 82,891
DC10: 106,743
A300: 53,419

JET


Besides this thread being 15 years old, the information in this post is incorrect.
 
User avatar
ams747757
Posts: 296
Joined: Tue Mar 24, 2015 1:14 am

Re: Total Cycles/time

Thu Sep 08, 2016 3:42 pm

Didn't LH have over 125k hours on the 744's that they retired last year?
 
strfyr51
Posts: 2141
Joined: Tue Apr 10, 2012 5:04 pm

Re: Total Cycles/time

Thu Sep 08, 2016 8:16 pm

atlasair wrote:
hi,
can anyone tell me where I can find info on an aircraft total cycles or time.

I've heard that when an aircraft reaches a total time or cycles they must be retired. Well I was wondering what those figures were.

like for 747's and smaller aircraft

When is an aircraft too old to fly?

Thanx in advance
Atlas Air


When Parts Procurement becomes 'cost Prohibitive.
 
TNST3B
Posts: 8
Joined: Wed Jun 15, 2016 5:09 am

Re: Total Cycles/time

Thu Sep 08, 2016 9:44 pm

strfyr51 wrote:
atlasair wrote:
hi,
can anyone tell me where I can find info on an aircraft total cycles or time.

I've heard that when an aircraft reaches a total time or cycles they must be retired. Well I was wondering what those figures were.

like for 747's and smaller aircraft

When is an aircraft too old to fly?

Thanx in advance
Atlas Air


When Parts Procurement becomes 'cost Prohibitive.


It's not quite as simple as that. Each type is subject to a cycle/hour "limit" where upon after there must be a prohibitively expensive anti-fatigue program implemented for the air frame. As an example frequently used 733 would probably cycle/time out before parts become overly expensive.
 
BerenErchamion
Posts: 48
Joined: Thu May 28, 2015 12:44 am

Re: RE: Total Cycles/time

Fri Sep 09, 2016 7:29 pm

tom2katie wrote:
The Twin Otter has life limited wings. At 35,000 hours (or less for the 100/200 series), the wing boxes and mainframes must be replaced. Many operators choose to do this as there is no life limit on any other airframe component and the aircraft is not replaceable.


Didn't Viking Air restart production of the Twin Otter several years ago?
Union YES!
 
User avatar
zkojq
Posts: 2325
Joined: Fri Sep 02, 2011 12:42 am

Re: Total Cycles/time

Sat Sep 10, 2016 3:55 pm

ams747757 wrote:
Didn't LH have over 125k hours on the 744's that they retired last year?

I made up these graphs last year which may be of interest. If anyone has cycle/hour info of any other recently retired pax 747s, please feel free to PM me. :)

Image
Image
Image
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Image
First to fly the 787-9 (ZK-NZE, NZ103, 2014-10-09)
 
Viscount724
Posts: 19065
Joined: Thu Oct 12, 2006 7:32 pm

Re: RE: Total Cycles/time

Fri Sep 30, 2016 1:25 am

BerenErchamion wrote:

Didn't Viking Air restart production of the Twin Otter several years ago?


Yes, As of the end of 2015 Viking had delivered 84 new Twin Otter 400s.
http://www.vikingair.com/viking-news/tw ... -delivered

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