FLC OF MLG MISUNDERSTOOD TAXI INSTRUCTIONS. MISSED ASSIGNED TAXIWAY AND TAXIED ON AREA NOT STRESSED FOR THEIR WEIGHT ACFT.

Narrative

AFTER LNDG ON RWY 22 AT FAY; AND WHILE ROLLING OUT NEAR THE END OF THE RWY; THE TWR OPERATOR GAVE US SOME TAXI INSTRUCTIONS WHICH WERE ONLY PARTIALLY RECEIVED AND UNDERSTOOD. IT SEEMS LIKE IT HAS BECOME QUITE COMMON PLACE AT SOME ARPTS FOR A RATHER LONG SET OF INSTRUCTIONS TO BE GIVEN TO THE CREW WHILE STILL BEING IN THE PROCESS OF LNDG AND ROLLING OUT. IN OUR CASE; WE COPIED THE CLRNC TO TURN R ON RWY 28; WHICH WE DID; BUT WE DID NOT SEE ANY TAXIWAY SIGNS FOR TAXI 'A'; WHICH IS WHAT WE THOUGHT THE TAXI CLRNC THEN INCLUDED. WITH OUR GATE CLRLY IN SIGHT A SHORT DISTANCE AWAY; AND WITH A TAXIWAY A SHORT DISTANCE IN FRONT OF US LEADING TO OUR GATE (WHICH TURNED OUT TO BE TAXIWAY K). WE PROCEEDED TO TAXI THE SHORT DISTANCE ON RWY 28 TO TAXI K; ALTHOUGH WE WERE NOT SURE IT WAS 'A' OR 'K'. THE TWR CTLR TOLD US TOO LATE THAT WE HAD MISSED 'A' AND WERE NOW ON A RWY WHICH WAS NOT CAPABLE OF BEARING OUR WEIGHT. IN RETROSPECT; I SHOULD HAVE STOPPED AFTER CLRING THE RWY AND MADE SURE WE HAD OUR BEARINGS AND A CLR TAXI INSTRUCTION; BUT IT IS VERY DIFFICULT AT MANY ARPTS TO FIND TAXI SIGNS THAT TELL YOU WHAT TAXIWAYS ARE BEING SIGNIFIED. THE ACCIDENT AT DETROIT METRO WAS SUPPOSED TO SIGNAL A REVIEW OF ALL ARPTS TO MAKE SURE THAT TAXIWAYS WERE CLRLY DESIGNATED WITH SIGNS VISIBLE TO A TAXIING PLT; BUT IN MY OPINION THIS IS STILL AN AREA THAT IS CLRLY A HAZARD POTENTIAL.