Manhour estimation

[clun]

As usual, everyone know that the aircraft maintenance work is calculated by manhours. Does anyone know that is any guideline or reference for a maintenance manhour estimation?Some of the mechanic told me that they're IMAGE by their own experience. Hm....it seem a little bit confused. Any comment?

 

[edbgtr]

Hi Clun

Often OEMs will estimate the number of manhours required to perform various maintenance tasks on their products. They do "time and motion" studies to determine these values for the "average" person (mechanic) with the correct tools and workshop support. In countries (or towns) where the infrastructure is lacking, these OEM estimates may be over optimistic. It is usually best to perform your own estimates of maintenance operations. Eventually experience will hone your ability to perform such estimates.

Regards,

Ed.

 

[IRstuff]

It's generally a good idea to keep track of hours actually spent on jobs that you've had. This allows you to develop your own Dodge book of hours required for any job.

Even if there were some sort of Dodge book available, you should keep track so that you can tell if your actual hours agrees with the standard. If it doesn't you can at least try to discover why.

TTFN

 

[FranAle]

Hi Clun

In my experience in a 20 a/c fleet and 18 helicopters you can estimate your labortime through 2 different ways:
1.- By crittical dues (your most esperienced mechanic time)
2.- By influence dues (nothing happens if you put some task before or after any)
After you state one of this methods,use a 8 hour day but asumme quarter for it. It means you have periods of 2 labor hour that includes (paperwork, shop repair, storage travel) It´ll be more easy calculate the time needed for a task and how many persons you want to perform the task.

Francis

 

[COKA]

I agree with FranAle on paperwork, shop repair and storage travel times. I would add to that the fact that after 9/11, the aircraft maintenance companies in general have been going through hard times with a lot of changes, including layoffs. I have seen some mechanics take much longer to finish a job because they don't want to be seen not doing anything. This is something serious that should be taken into consideration when calculating manhour.