UAL Bagsmasher
Topic Author
Posts: 1839
Joined: Wed Sep 08, 1999 12:52 pm

Pressure Gauge Near APU On 737

Sun Jun 24, 2001 12:27 pm

Today I noticed a pressure gauge on the underside of the fuselage of a B737-300. It was underneath the APU. Anyone know the function of this gauge?
 
JT-8D
Posts: 423
Joined: Sun Dec 31, 2000 11:34 pm

RE: Pressure Gauge Near APU On 737

Sun Jun 24, 2001 12:42 pm

Maybe the apu fire bottle pressure? Our planes dont have it, but there are lots of options available..JT
 
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wilcharl
Posts: 1162
Joined: Sun Jun 25, 2000 11:19 am

RE: Pressure Gauge Near APU On 737

Sun Jun 24, 2001 1:13 pm

JT8-D wins the prize!
If you go back to my questions on the blow out disks, and there was a link that had a picture of one.
 
UAL Bagsmasher
Topic Author
Posts: 1839
Joined: Wed Sep 08, 1999 12:52 pm

RE: Pressure Gauge Near APU On 737

Sun Jun 24, 2001 1:30 pm

Thanks guys!
 
cdfmxtech
Posts: 1319
Joined: Wed Jul 05, 2000 11:37 am

RE: Pressure Gauge Near APU On 737

Mon Jun 25, 2001 8:03 am

UAL Bags - was the APU compartment door and shroud open...or was it closed. Because if it was open...then u probably saw the APU hourmeter. If not, then there are no pressure gauges. Unless u ARE talkin' about those disks.
 
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RE: Pressure Gauge Near APU On 737

Tue Jun 26, 2001 3:38 am

I agree with JT-8D, our 737's have externally visible pressure gauges for the APU firebottles.
 
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HAWK21M
Posts: 29929
Joined: Fri Jan 05, 2001 10:05 pm

RE: Pressure Gauge Near APU On 737

Fri Jun 29, 2001 9:15 pm

In case the APU fire bottle Pressure gage is not installed.How do you know that the pressure is below minimum [I know discharge will be indicated by pr sw on Fire control panel in cockpit]
Is there any special checks like weighing the Bottle once a day etc.
Whats the MEL say for a U/s Apu pr gage,is the APU declared U/s.
Anyone.
regds.
HAWK.
I may not win often, but I damn well never lose!!! ;)
 
JT-8D
Posts: 423
Joined: Sun Dec 31, 2000 11:34 pm

RE: Pressure Gauge Near APU On 737

Sat Jun 30, 2001 2:20 am

Hawk, there is a door on the left side. You have to crawl inside and read the gauge. Its a mess in there too--lol..JT

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