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Grd Fire Extinguisher For 4 Engined Aircraft  
User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Posted (10 years 9 months 3 weeks 1 day 20 hours ago) and read 1996 times:

What would be the capacity of a Ground Fire Extinguisher bottle used for Engine Start on a B747 or similiar 4 engined Aircraft during Engine start.
regds
HAWK.


Think of the brighter side!
10 replies: All unread, jump to last
 
User currently offlineSpitfire From France, joined Feb 2001, 801 posts, RR: 7
Reply 1, posted (10 years 9 months 3 weeks 1 day 15 hours ago) and read 1981 times:

None...there isn't anymore a fire extinguisher on stand by near the plane during the engine start, as, generaly, the start occurs after- or during - a more or less long push back.

Rgds

Spitfire



Sabena ... Never to be forgotten (12 years already , what a shame !! )
User currently offlineCancidas From Poland, joined Jul 2003, 4112 posts, RR: 11
Reply 2, posted (10 years 9 months 3 weeks 1 day 15 hours ago) and read 1977 times:

aircraft engines are no longer started at the gate. if you listen to ground communications at large airports you will hear pilots asking ground for permision to push, that is pushback from the gate and permission to start, asking to start engines after they have been pushed back or during thier pushback.


"...cannot the kingdom of salvation take me home."
User currently offlineCdfmxtech From United States of America, joined Jul 2000, 1338 posts, RR: 27
Reply 3, posted (10 years 9 months 3 weeks 1 day 14 hours ago) and read 1974 times:

There are instances that engiens have to be started at the gate (gnd maintenance) or an inop APU, this requireing a ground start cart.

User currently offlineDc10hound From United States of America, joined Dec 2000, 463 posts, RR: 5
Reply 4, posted (10 years 9 months 3 weeks 1 day 11 hours ago) and read 1949 times:

There are instances that engiens have to be started at the gate (gnd maintenance) or an inop APU, this requireing a ground start cart.

And when that is required the following procedures are to be followed:

"Whenever aircraft engines are being started during maintenance operations, one dry chemical extinguisher (at least 18 lb. size) should be immediately available. At regular gate positions, this requirement is met by the dry chemical wheeled units. At other locations, the extinguisher may be mounted on a servicing vehicle at the aircraft, at a fixed position within 100 feet of the aircraft, or a portable unit may be brought to the aircraft."



"Eagles soar. But weasels never get sucked into jet intakes.."
User currently offlineCptkrell From United States of America, joined Sep 2001, 3220 posts, RR: 12
Reply 5, posted (10 years 9 months 3 weeks 1 day 10 hours ago) and read 1941 times:

Cancidas wrote: "aircraft are no longer started at the gate." Actually, they are often started at the gate and backed out using the thrust reversers....jack


all best; jack
User currently offlineSpitfire From France, joined Feb 2001, 801 posts, RR: 7
Reply 6, posted (10 years 9 months 3 weeks 1 day 9 hours ago) and read 1933 times:

"..Actually, they are often started at the gate and backed out using the thrust reversers....".

Sorry Jack, not autorized for Boeing 737,747,757,767,777, DC10, MD11, Airbus A320, 330, 340,...

Only for tail mounted engines a/c.

Rgds

Spitfire



Sabena ... Never to be forgotten (12 years already , what a shame !! )
User currently offlineCptkrell From United States of America, joined Sep 2001, 3220 posts, RR: 12
Reply 7, posted (10 years 9 months 3 weeks 17 hours ago) and read 1915 times:

Sorry, Spitfire, I should have been more specific. Sitting in the lounge and watching about a half-dozen DC9s and sisters back themselves up one after the other always sticks in my mind...jack


all best; jack
User currently offlineSpitfire From France, joined Feb 2001, 801 posts, RR: 7
Reply 8, posted (10 years 9 months 3 weeks 16 hours ago) and read 1905 times:

Hi Jack,

The problem come from the jet blast from "wing mounted engines" in case of reverse at very low speed (that's the case here)...you can have gravel, dust (or anything you can find on a tarmac) ingestion into the engines. That's not so good for those costly high precision mechanical stuff.  Sad
And moreover, to backup an a/c using reverse you can't use "idle reverse" only, you have to put some power initially...

Rgds

Spitfire



Sabena ... Never to be forgotten (12 years already , what a shame !! )
User currently offlineCancidas From Poland, joined Jul 2003, 4112 posts, RR: 11
Reply 9, posted (10 years 9 months 3 weeks 16 hours ago) and read 1902 times:

a/c with tail mounted engines are the only ones i have seen doing powerbacks. anything else will not do them [as they are not allowed] and will start after pushback. don't forget, you have a lot of FOD that can be ingested into the engines at gates.


"...cannot the kingdom of salvation take me home."
User currently offlineWilcharl From United States of America, joined Jun 2000, 1166 posts, RR: 3
Reply 10, posted (10 years 9 months 3 weeks 5 hours ago) and read 1869 times:

Sorry to both you guys... (Spitfire and Jack) but 757s were routinly powered back by Eastern, AA did it for a minute also... Air Florida and Frontier (1) even did it with the 732 ...

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