Nicoeddf
Posts: 526
Joined: Thu Jan 10, 2008 7:13 am

Why Are B-Checks Obsolete Today?

Wed Jun 25, 2008 2:40 pm

Hey folks,

searching didn't got me any results (out of stupidness maybe?)

My understanding is, that most of the B-Check work got rendundant because the work is done either

a) by doing small things permanently overnight

or

b) because the quality of A-checks and material and so on improved a good way

or

c) Intervalls of A and C-checks got closer therefore making B-Checks unnecessary.

I know all my explanations could be wrong, therefore big hands for everyone giving me some insight  Smile

regards and thanks in advance

Nico
 
tdscanuck
Posts: 8572
Joined: Wed Jan 11, 2006 7:25 am

RE: Why Are B-Checks Obsolete Today?

Wed Jun 25, 2008 10:30 pm



Quoting NicoEDDF (Thread starter):
My understanding is, that most of the B-Check work got rendundant because the work is done either

Letter checks (A, C, and D, as well as B) actually disappeared with the 737NG. Now you can have the maintenance plan rearranged in a multitude of ways to fit your operation. Everything from "Do a little bit every night and that's it until heavy structural checks" to "Don't touch the airplane for several weeks then do a big check".

Tom.
 
GST
Posts: 812
Joined: Wed Jun 11, 2008 10:27 am

RE: Why Are B-Checks Obsolete Today?

Wed Jun 25, 2008 10:39 pm

Yeah it does depend from type to type. But no check will be totally obsolete. Whilst there is the potential for things to break, the aircraft operators will help to find them and fix them. they dont want to compromise the astonishing safety record aviation currently has.
 
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larshjort
Posts: 1434
Joined: Wed Dec 19, 2007 6:54 pm

RE: Why Are B-Checks Obsolete Today?

Wed Jun 25, 2008 11:05 pm

You split the check so instead of one big check which might take days, you have secveral small checks which can be done overnight with the aircraft flying pax in the day
139, 306, 319, 320, 321, 332, 34A, AN2, AT4, AT5, AT7, 733, 735, 73G, 738, 739, 146, AR1, BH2, CN1, CR2, DH1, DH3, DH4,
 
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HAWK21M
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RE: Why Are B-Checks Obsolete Today?

Thu Jun 26, 2008 12:42 am

Its more Economical to carry out parts of the Higher checks during the lower check Intervals thus reducing the Grounding time during the higher check.

regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
fr8mech
Posts: 6799
Joined: Mon Sep 26, 2005 9:00 am

RE: Why Are B-Checks Obsolete Today?

Thu Jun 26, 2008 1:38 am

It all depends on the operator, the aircraft, the manufacturer, the regulatory authority and the approved maintenance program for that aircraft type. One operator may still do B-checks, while another does not.

We still do them on our DC-8 aircraft, but on no other. We do A-checks on our B747-classic, but not on our other Boeings.

Maintenance programs evolve. We've eliminated D-checks because we've segmented them into our C checks. We've shortened our C check times (certain segments) by incorporating some tasks into our non-major maintenance program.

It's all designed to maintain a high level of safety and reliability while at the same time limiting the expense of keeping the aircraft on the ground for extended periods of time.
When seconds count...the police are minutes away.
 
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HAWK21M
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Joined: Fri Jan 05, 2001 10:05 pm

RE: Why Are B-Checks Obsolete Today?

Thu Jun 26, 2008 11:31 am



Quoting Fr8Mech (Reply 5):
One operator may still do B-checks, while another does not.

Out here Operators of similiar type fleet are encouraged to follow similiar Mx schedules,approved by the regulatory authorities.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
Max Q
Posts: 5769
Joined: Wed May 09, 2001 12:40 pm

RE: Why Are B-Checks Obsolete Today?

Fri Jun 27, 2008 10:37 pm

How long to do a 'D' check on a 747 Classic these days FR8 Mech ?
The best contribution to safety is a competent Pilot.
 
AirframeAS
Posts: 9811
Joined: Thu Feb 05, 2004 3:56 pm

RE: Why Are B-Checks Obsolete Today?

Sat Jun 28, 2008 3:16 pm



Quoting Larshjort (Reply 3):
You split the check so instead of one big check which might take days, you have secveral small checks which can be done overnight with the aircraft flying pax in the day

This is exactly what WN does.
A Safe Flight Begins With Quality Maintenance On The Ground.
 
fr8mech
Posts: 6799
Joined: Mon Sep 26, 2005 9:00 am

RE: Why Are B-Checks Obsolete Today?

Sat Jun 28, 2008 9:47 pm



Quoting Max Q (Reply 7):
How long to do a 'D' check on a 747 Classic these days FR8 Mech

No clue. I seem to recall that PanAm took 30 - 45 days at hangar 19 at JFK, but I worked at 17. Never really got involved in the "D" check.

I'm not sure anyone does a D check on B747 anymore. We do segmented C checks that incorporate D check tasks in the C check.
When seconds count...the police are minutes away.
 
CX Flyboy
Posts: 6064
Joined: Sun Dec 26, 1999 6:10 pm

RE: Why Are B-Checks Obsolete Today?

Mon Jun 30, 2008 3:13 am



Quoting AirframeAS (Reply 8):
This is exactly what WN does.

...or doesn't do, as the case may be!!

Sorry, couldn't resist!

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