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Can anyone help me with this aircraft oxygen system question I had on a JAR aircraft engineering test?

During a demonstration of the operation of a passenger chemical oxygen generator the panel was manually opened and the masks deployed. The lanyard was pulled but no oxygen flowed from the hose to the face masks? Can anyone diagnose possible faults in this scenario?? Thanks

Lanyard broke thus not activating the canister. The igniter is faulty. The canister is already used and not replaced. The hose has a kink or is disconnected from canister.

This entry was posted on Friday, March 5th, 2010 at 1:21 am and is filed under oxygen generator. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “Can anyone help me with this aircraft oxygen system question I had on a JAR aircraft engineering test?”

  1. My husband is a pilot/flight instructor maybe this will help;

    Simply opening and extracting the mask will not activate the flow of O2. The canisters do not contain O2 to begin with, but 2 chemical agents (need to look up what they are) that, when put in contact w/ each other generate O2 for a (very) short amount of time (canisters will become VERY HOT). So I know of 2 ways: a switch on the flight desk and a barometric sensor that will automatically deploy when detects a rapid drop of cabin pressure…
    References :
    http://www.flight592.com/Flight592Discussion-Current/_disc5/0000013b.htm

  2. Lanyard broke thus not activating the canister. The igniter is faulty. The canister is already used and not replaced. The hose has a kink or is disconnected from canister.
    References :

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