LNDG WITHOUT CLRNC.

Narrative

OUR FLT WAS HANDED OVER TO TWR. THE PNF SWITCHED FREQ TO MEM TWR. PF CALLED FOR A LNDG CHK; WHICH WAS COMPLETED. ON FINAL; BOTH CREW MEMBERS FAILED TO ENSURE WE HAD A LNDG CLRNC WITH THE TWR. CONSEQUENTLY; OUR FLT LANDED WITHOUT A LNDG CLRNC. CONTRIBUTING FACTORS: FATIGUE. I AM ON RESERVE AND WAS CALLED AT XX30Z HRS TO FLY A 4 DAY TRIP FOR A COPLT WHO DID NOT SHOW FOR THEIR TRIP. THE FIRST 2 LEGS OF THE TRIP WERE NIGHT FLTS: DTW-LAS DEPARTING XA26Z AND ARR XE39Z; AND LAS-MEM DEPARTING XG58Z AND ARR XM53Z. I HAD BEEN UP FOR 24 HRS WITH NO SLEEP. BEING ON RESERVE WITH SHORT NOTICE TO FLY GAVE ME NO OPPORTUNITY TO PREPARE FOR THE NIGHT FLYING. TWR COM: ON SHORT FINAL (2 MI) MEM TWR MADE A XMISSION TO AN ACFT HOLDING SHORT OF RWY 18R. THE XMISSION INFORMED THE ACFT ON THE GND TO BE READY FOR TKOF AFTER THE ACFT ON A 2 MI FINAL LANDS. THIS XMISSION DID NOT HELP GIVE US A CLUE THAT WE DID NOT HAVE A LNDG CLRNC. IN FACT; IT DID THE OPPOSITE FOR ME. IT GAVE ME THE FEELING THAT TWR KNEW WE WERE ON FINAL AND LNDG.