Legend: IFS = Incentive Flying Allowance
FS/FSS = Flight Steward/Flight Stewardess
LS/LSS = Leading Steward/Leading Stewardess
CS/CSS = Chief Steward/Chief Stewardess
IFS = Inflight Supervisor ( Male and Female)
For flights that exceed 14 hours duty time but less than 18 hours, the IFA is 2.5 times eg: SIN/LHR
For flights that exceed 18 duty time eg: SIN/SFO, cabin crew's IFA is 3 times.