The smoke is detected by 6 smoke detectors in the aft cargo and 4 in the forward cargo hold.
When the detectors detect smoke they send a signal to the Cargo Electronic Unit which then triggers the fire alarm bell and the Fire light.
The photo-electric cells detect smoke apparently
Obviously
Is 3% Halon detectable as smoke to the photo electric cells?
Try it at home and let us know
,i doubt it though.
More thoughts please ( or better yet, a reference that says the light will extinguish).
No prob stranger...
Boeing AMM Cargo Smoke Detection System Operation 26-10.
As with an advisory condition, as long as a warning condition exists, all visual annunciations on the control panel will remain illuminated. When the fire warn- ing condition is no longer present, all annunciations will extinguish, and the sys- tem will automatically reset itself to normal mode of operation.