Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
A, B, C, D Checks? Explain?  
User currently offlineTCX757330 From United Kingdom, joined Nov 2008, 39 posts, RR: 0
Posted (5 years 8 months 2 weeks 3 days 23 hours ago) and read 12542 times:

Hi

Can somebody please explain the difference between A, B, C, D Checks and how often each of the checks has to take place?

Cheers

TCX757330

2 replies: All unread, jump to last
 
User currently offlineEx52tech From United States of America, joined Dec 2006, 559 posts, RR: 1
Reply 1, posted (5 years 8 months 2 weeks 3 days 22 hours ago) and read 12464 times:

Each airline sets up the criteria for each one of those checks in conjunction with the manufacturers recomendations, and their operational needs, the criteria is not set in stone. Some airlines do not use the A-D check system anymore.

For instance the airline that I worked for when they were using that system would accomplish an A check (overnight) at least once every 5 days. The B check every 3 months they usually took 1 or 2 days. The C check on a wide body every 4,000 flt hours, in anywhere from 20 to 30 days, and incorporate a 1/4 D check with each C. The C checks were accomplished every 14 months, on average, that way there was never the need for a D check. The D checks were supposidly to be done every 5 years on average.



"Saddest thing I ever witnessed....an airplane being scrapped"
User currently offlineTristarSteve From Sweden, joined Nov 2005, 4024 posts, RR: 33
Reply 2, posted (5 years 8 months 2 weeks 3 days 10 hours ago) and read 12347 times:

The aircraft manufacturer produces a Maintenance Planning Document. This will detail the maint required for each part.
Like Engine oil level...check each transit
Main undercarriage overhaul....Every 20000 landings.
And everything else in between.
The manufacturer will package these checks into groups which run from Transit check to D check.
The airline will either accept the packages and use them, or construct its own. This really depends on how it operates. If your aircraft nightstops at base every night, why not do the maint in small 6 hour packages.
We once did overnight maint only, with a hangar input every 3 years.
The problem then is some jobs take longer than 6 hours. So you need a day long input for these jobs. The advantage of using the manufacturers packages, is when you sell the aircraft it is already aligned to the norm.
An airline that flies summer charters, will ensure that all maint is done in the winter, even packaging A checks so they can be done on long turnrounds in the summer so the aircraft can fly day and night for 8 months.


Top Of Page
Forum Index

Reply To This Topic A, B, C, D Checks? Explain?
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Medical Checks - Maintenance posted Fri Nov 21 2008 22:19:52 by HAWK21M
Normal Law? Direct Law? Can Someone Explain? posted Tue Nov 18 2008 10:26:45 by Mastropiero
Ground Fire Extinguishers Checks posted Fri Jun 27 2008 02:01:16 by HAWK21M
Why Are B-Checks Obsolete Today? posted Wed Jun 25 2008 07:40:44 by NicoEDDF
Security Checks Post Fedex 705. posted Sat May 17 2008 00:46:00 by HAWK21M
Background Checks posted Wed Dec 19 2007 13:41:33 by Grockpilot
Cost Of Maintenance Checks posted Thu Oct 11 2007 06:11:30 by Nycbjr
How Much Time Between Aircraft Maintenance Checks? posted Tue Apr 10 2007 03:57:14 by AviationAddict
A, B, C, D Checks, Is There A Website Explaining posted Fri Feb 23 2007 19:07:49 by Xbraniffone
Can Someone Explain This Incident? posted Wed Feb 14 2007 19:27:00 by DIJKKIJK
Checks performed on new aircraft? posted Thu May 12 2011 15:37:35 by lke2fly
FA Cabin Checks posted Tue Jan 4 2011 22:30:25 by StephenHyam
Question About A1 A2 A3.....Checks posted Wed Oct 27 2010 07:32:45 by Tangowhisky
Explain These Uneven Exhaust Plumes posted Fri May 21 2010 19:18:46 by Fly2HMO
Scheduling Maintenance Checks posted Wed Mar 31 2010 05:08:54 by VikingA346
Rearview Mirrors For In-flight Engine Checks? posted Wed Mar 17 2010 08:26:51 by alwaysontherun
Can Someone Explain The Use Of Trim Vs. Elevator posted Thu Feb 25 2010 16:11:42 by AT
Lgear Up Checks posted Sun Oct 11 2009 08:21:35 by Max777geek
Explain These Uneven Exhaust Plumes posted Fri May 21 2010 19:18:46 by Fly2HMO
Scheduling Maintenance Checks posted Wed Mar 31 2010 05:08:54 by VikingA346
Rearview Mirrors For In-flight Engine Checks? posted Wed Mar 17 2010 08:26:51 by alwaysontherun
Can Someone Explain The Use Of Trim Vs. Elevator posted Thu Feb 25 2010 16:11:42 by AT

Sponsor Message:
Printer friendly format