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

High OAT Fire Bottle Thermal Discharge

Fri Jun 29, 2007 5:38 am

Has anyone else experienced fire bottles thermally discharging due to high ambient temps? We've seen a few cargo bottles blow their thermal relief plugs over the past month due to high ambient temps. Is the CRJ-200 the only aircraft that has this problem in the summer? The high heat level in the APU bay is just too much for the bottles to withstand.
 
phxpilot
Posts: 60
Joined: Fri Jul 22, 2005 5:25 am

RE: High OAT Fire Bottle Thermal Discharge

Fri Jun 29, 2007 9:10 am

YV had a problem with that on the CRJ2. A policy was instituted prohibiting running the APU on the ground because of that issure. Supposedly air and power would "automatically" be connected upon arrival. It didn't happen. We would sit and sweat with no air for 10 minutes in PHX with a 110 OAT. Still no air so started the APU. That great idea lasted about a month.
 
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HAWK21M
Posts: 30002
Joined: Fri Jan 05, 2001 10:05 pm

RE: High OAT Fire Bottle Thermal Discharge

Fri Jun 29, 2007 9:20 pm

Why was a shielding not provided on the Firebottle in that hot zone.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
UAL Bagsmasher
Topic Author
Posts: 1839
Joined: Wed Sep 08, 1999 12:52 pm

RE: High OAT Fire Bottle Thermal Discharge

Sat Jun 30, 2007 5:37 am

Not sure why they didn't insulate it better. But with the APU running and high OAT, it gets mighty toasty up there Smile

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