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Do Airlines Cannibalize Their Engines?  
User currently offlineGOCAPS16 From Japan, joined Jan 2000, 4298 posts, RR: 23
Posted (7 years 7 months 3 weeks 2 days 12 hours ago) and read 3445 times:

That is my question.

Currently in my shop, we do a lot of cannibalizing and un-cannibalizing on our motors. Of course, we do this to ship it to other commands such as our F404/414s to NAS Lemoore or on an aircraft carrier on station in the Persian Gulf. Do airlines do the same if they were to ship it somehow for some reasons? Enlighten me, please.

Kevin

11 replies: All unread, jump to last
 
User currently offlineDALMD88 From United States of America, joined Jul 2000, 2365 posts, RR: 15
Reply 1, posted (7 years 7 months 3 weeks 2 days 7 hours ago) and read 3405 times:

When DL did heavy check visits we did a little robbing of engines. This happened a lot on the MD88 during thunderstorm season. It is easy to overspeed the -219 in wx. Our engine shop was having a hard time keeping up with all the pulled engines so one that was sitting in the hangar for a month was fair game. Engine swaps of this type are a lot less common now. We just don't have the planes sitting around long enough in ATL to make it worth the trouble.

User currently offlineHAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Reply 2, posted (7 years 7 months 3 weeks 2 days 6 hours ago) and read 3389 times:

Out here it depends on the situation of spares at the time.But its Importarnt that a record is mantained of the Items used.
Normally in an AOG aircraft awaiting repairs & a Flying Aircraft has a snag,If spares arn't available,then Spares from the AOG'd aircraft is used with appropriater paperwork.
regds
MEL


Think of the brighter side!
User currently offlineKaddyuk From Wallis and Futuna, joined Nov 2001, 4125 posts, RR: 28
Reply 3, posted (7 years 7 months 3 weeks 2 days ago) and read 3344 times:

Robbery's are a part of airline life, there are times you just cant get around them, even robbing one aircraft for several hours to depart another whilst waiting for replacement spares.

So, yes... they do happen. Although i'm pretty sure that most engineers would rather NOT rob an aircraft as once you start messing with a servicable setup, you can guarentee that it will take alot of work to make it back servicable again...


Whoever said "laughter is the best medicine" never had Gonorrhea
User currently offlineZeke From Hong Kong, joined Dec 2006, 7725 posts, RR: 73
Reply 4, posted (7 years 7 months 3 weeks 2 days ago) and read 3331 times:

BA used to put their older 767 engines on the inner of their 744's


We are addicted to our thoughts. We cannot change anything if we cannot change our thinking – Santosh Kalwar
User currently offlineAmtrosie From United States of America, joined Jan 2005, 274 posts, RR: 1
Reply 5, posted (7 years 7 months 3 weeks 1 day 13 hours ago) and read 3219 times:

Not only yes but they all have forms by which the cannibalization is preformed.

User currently offlineHAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Reply 6, posted (7 years 7 months 3 weeks 1 day 13 hours ago) and read 3207 times:

Quoting Zeke (Reply 4):
BA used to put their older 767 engines on the inner of their 744's

Why Inner not outer.Any Paricular reason.
regds
MEL


Think of the brighter side!
User currently offlineAbbs380 From United States of America, joined Mar 2005, 120 posts, RR: 0
Reply 7, posted (7 years 7 months 3 weeks 1 day 8 hours ago) and read 3164 times:

Absolutely, nearly any part can be can be cannibilized from another a/c IN YOUR OWN FLEET, if it makes economic sense. If you have an a/c down for a specific part which will take time to acquire, and another a/c down for (say) heavy maint which will take some time anyway, you can just "can" the part you need to make the first a/c airworthy. The FAA does not bat an eye when this is done, but of course, you have to have proper tracking procedures written into your manual.

User currently offlineWhiskeyflyer From Ireland, joined May 2002, 224 posts, RR: 0
Reply 8, posted (7 years 7 months 3 weeks 1 day 6 hours ago) and read 3127 times:

when I was young and green in this industry, I joined a just opened MRO and the CEO announced, during a hangar speech,there would be no canniblization (also called "robbing") of spares. The old hands burst out laughing.................... within six months the red robbery tag and procedure appeared in the quality manual and the rest is history.

Question should be is the anything that is not cannibalized on an aircraft? excluding of coarse items that have reached life/scrap limits.

User currently offlineLMP737 From , joined Dec 1969, posts, RR:
Reply 9, posted (7 years 7 months 3 weeks 1 day 2 hours ago) and read 3094 times:

As far as cannibalizing the airline I work for does very little when compared to the military. Various reasons for this. One reason is the reliability of airliner engines is much greater then those on military aircraft, especially tactical aircraft. Airliner engines don't get the thrashing they get. Therefore you don't have as many engines laying around needing parts. Also cannibalizing is something the airlines really don't like doing. Unless there going to lose a trip the avoid doing it if at all possible.

Every once in a while we rob a part off a spare engine for an aircraft if the part won't be in on time. Once the part does arrive it's promptly put on the spare engine that was robbed. Another reason we don't need to rob parts as often is the nature of the operation. You may have an MD-80 that needs a part that's at another station. The plane is scheduled for a 6:00AM trip but the part doesn't get in till 8:00AM. The manager on duty will swap trips with a latter flight. That way you avoid the need for robbing parts off other aircraft or engines.

User currently offlineSinlock From United States of America, joined Dec 2000, 1532 posts, RR: 3
Reply 10, posted (7 years 7 months 3 weeks 1 day 2 hours ago) and read 3086 times:

I've heard many story's, The one that sticks out the most was about Eastern. That back in the early eighties some of the middle level managers at the Miami maintance depot would build up 727 "Ghost engines" from spare parts and extra cases they would order. They would then lease them to other airlines with paperwork and all. From what I was told they were 100% legit with Airworthiness certificates just that they didn't show up in all of Easterns books. What happened to that money the person didn't say but I had a few guesses.


My Country can beat up your Country....
User currently offlineMiles_mechanic From Canada, joined Sep 2001, 132 posts, RR: 0
Reply 11, posted (7 years 7 months 3 weeks 12 hours ago) and read 3002 times:

Hey everyone, as everyone has mentioned, robbing of parts is not a procedure that any airline would like to have to do, but as one person mentioned, if it is a decision between loosing a money making trip and having two airplanes grounded, they will give in and let you rob the parts. I know the tech records people hate it, as they always have to update component life left when parts transfered, and change serial numbers from one set of books to another.
I know we had one of our airplanes that was down for a spar repair because of a off taxiway incident and they put a bend in the spar by the landing gear. Over the 6 months it was down while the repair was drafted and approved, we robbed 57 parts off of that airplane to keep the other ones in the fleet going.
I have heard with the PT6 engines, that one company they would split engines and swap, power modules with compressor modules to extend time on the engines, and stuff like that.

Regards
Miles

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