Hi I was just wondering what the procedures are for checking the circuit breakers on the first flight of the day? Do they check that every breaker is on or is there more to it? Are there more circuit breakers in the 767 cockpit besides the overhead breakers? If possible does anyone have a pic of the overhead circuit breaker panel on the 767? Thank You. :-wave

I haven't seen any of the breaker panels in PIC so I assume you mean real world.There are 4 large breaker panels (P11-1,2,3,4) over head aft of overhead panel and 4 smaller panels (P6-1,2,3,4) low on the aft side accesory panel.Aircraft C/Breakers are different than the usual household type found in the States. They are round and pop-out when "pulled" or "popped". Some are color coded. They are pretty easy to see/feel if they are extended. It is a visual inspection that does not take long at all. If you just happen to have "FLY II" look at the King Air or Bell panels.When accepting an aircraft the crew will visually check to see if any are extended due to maintenance, collared inop with a logbook entry or just "popped".Sorry, don't have a picture, but if you get a few dozen white "Lifesaver" candies and line them up, that is what they look like. Or those pop-out turkey cooking indicators...Timothy

Usually the engineers check the breakers at the start of the day, November, and set (reset) any which have been pulled for any reason (and check that none have popped due to malfunctions). Generally, we only check the ones in the cockpit, in the galleys, in the Main Equipment Center and in the places more easily accessed. The pilots double check the ones in the cockpit before flight: Despite intensive scanning, sometimes a breaker is missed, so a second or third pair of eyes comes in handy (especially in a busy environment where there are lots of distractions). The white "stem" of the CB is designed to make it easy to see if it is out (in theory), but if you don't look at the CB panel at the right angle or the overhead lighting is blinding you, you may miss this cue. Scanning CB panels is somewhat of an "art" :-)There are literally dozens of CB panels on your average Boeing. Some are in plain view, others are hidden behind access panels, or are behind clear plastic/perspex windows (you can see that they are set, but you may need a screwdriver to mess around with them). Recently, new rules have been formulated regarding the resetting of breakers which have popped due to malfunctions, especially in relation to the fuel system. For example, fuel pump breakers should not be reset at any time (in the air or on the ground) without some sort of investigation/ corrective maintenance being carried out. Other CB's are given more leniency, but no CB should be reset in flight unless the manuals specifically say you can do this.In theory a CB should be completely replaced after it has popped (in case the CB has been damaged), but I can't say I've seen anyone do this in real life. Engineers, on the ground, will usually attempt one reset of a non-fuel related CB. If it stays in, we will then run checks to make sure the system is working properly (In some cases, we will subject the system to high loading to see if this triggers the fault). We will monitor the CB throughout the preflight/transit period to make sure it stays in. If it doesn't stay in, we will then go about finding why it has popped. After replacing a suspected faulty component, we will then try a further reset and run further checks.Sometimes a CB will become worn or faulty and pop even under low current situations (perhaps there is something in it's design which makes it behave this way... i.e. it will be more prone to trip as it gets older... You don't want the CB to trip at higher currents or completely freeze up as it gets older).Anyway, hope this helps (Sorry, I don't have any handy shots/diagrams of 767 CB panels.... Unless someone is building a very accurate simulator, there's not usually a big demand for these ;-)).Cheers.Ian.