HEY,
I THINK CABIN CREW INCAPACITATION WAS THE PHRASE YOU WERE LOOKING FOR!
DEPENDS ON THE TYPE OF OPERATION I THINK. FOR EXAMPLE, LOW COST CXR'S LIKE EASYJET, GO, BUZZ ETC OPERATE WITH ONLY MINIMUM CABIN CREW. WHICH SAY FOR A B737 WOULD BE THREE. WHERAS BA OR SIMILAR CAN OPERATE THE SAME A/C TYPE WITH SIX OR SEVEN CABIN CREW.
IVE FLOWN AS F/A WITH BOTH TYPES OF AIRLINES AND I GUESS AS ALL EASYJET FLTS OPERATE WITH MINIMUM CABIN CREW, THEN IF SOMEONE GOES SICK OR IS INJURED DOWNROUTE THEN YES, THIS DOES CAUSE OPERATIONAL PROBLEMS. IN EXTREME CIRCUMSTANCES I THINK THE PAX LOAD CAN BE REDUCED IN ORDER TO OPERATE
WITH LESS THAN MINIMUM CREW, BUT I DONT THINK THIS IS TOO COMMON AN OCCURENCE.