Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
How Is It Possible?  
User currently offlinePopee From Pakistan, joined Feb 2001, 151 posts, RR: 0
Posted (14 years 8 months 3 weeks 4 days 4 hours ago) and read 3015 times:

Last week during preflight checks of B747-300, I noted that Pax Oxygen pr was low. I sent tech to change the bottle(s) with low pr. He later on told me that three out of five bottles were having pr of 1100 psi each and rest of the two were having 2000 psi each. Going through previous tech logs, I noticed same three bottles getting replaced almost fortnightly. Question is if there is leakage in the system why all five bottles r not getting depleted , being in parallel ? Why these three ? Anyone out there to help me out ...

2 replies: All unread, jump to last
User currently offlineAir2gxs From , joined Dec 1969, posts, RR:
Reply 1, posted (14 years 8 months 3 weeks 3 days 22 hours ago) and read 2953 times:

I don't know the -300, but suspect a check valve somewhere in the system.

User currently offlinePopee From Pakistan, joined Feb 2001, 151 posts, RR: 0
Reply 2, posted (14 years 8 months 3 weeks 3 days 18 hours ago) and read 2936 times:

As such there is no check vlv in the sys.

Top Of Page
Forum Index

Reply To This Topic How Is It Possible?
No username? Sign up now!

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!
Add Images Add SmiliesPosting Help

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

Similar topics:More similar topics...
Dewpoint: How Is It Calculated? posted Wed Nov 22 2006 04:24:49 by LTU932
SIL - How Is It Measured. posted Fri Aug 18 2006 13:13:19 by HAWK21M
Wake Turbulence - How Is It Measured? posted Tue Dec 20 2005 16:20:28 by Alphafloor
Reserve Fuel; How Is It Calculated? posted Sat Nov 19 2005 13:29:13 by Speedracer1407
Is It Possible To Make A Twin Engined B 747? posted Thu Nov 17 2005 20:25:49 by United Airline
Is It Possible To Change Engine Types? posted Mon Oct 25 2004 05:44:08 by EnviroTO
Eirp & How Is It Measured posted Mon Aug 23 2004 08:36:24 by HAWK21M
Runway Width, How Is It Measured? posted Wed Oct 29 2003 23:11:13 by Lh526
Autoland, Is It Possible? posted Sun Sep 28 2003 04:12:55 by Tarzanboy
Pilot Flies 727 By Himself...how Is This Possible? posted Fri Jun 13 2003 21:17:31 by IslandHopper

Sponsor Message:
Printer friendly format