Narrative:

May/xa/01, aircraft XXX at approximately XA50 exited runway 12L to hold short runway 12R behind air carrier Y in stl. We read back the exit and hold short behind air carrier Y, contacted ground 121.9. Contacted ground and repeated hold short runway 12R. Held with air carrier Y in front for about 1-2 mins, then clearance to cross runway 12R to parking expedite. We read back 'flight XXX air carrier X clear to cross runway 12R to parking.' no response from ground until just prior to pulling in to gate at engine shutdown. They asked if we had received a clearance to cross the runway. We responded yes we had and that we had read it back to them. They said they had training going on at the time and that they would get back to us. Captain spoke to them again and the supervisor told him that they had reviewed tapes and nothing was going to be reported but just wanted us to be aware of danger of crossing runways without a clearance. He said training in the tower/ground was taking place at the time. No actions required. At no time was there any danger to any aircraft or personnel. Supplemental information from acn 510969: ATC ground had trainee working frequency. 3 other air carrier flts and our aircraft waiting to cross runway 12R at stl after landing runway 12L. Controller's attempt to clear multiple aircraft across at once (standard practice at stl) muffed the call signs. The readback was clear, no 'slang' and not blocked. After readback was long silence on frequency where opportunity to correct clearance was available. This was an ATC deviation as the trainee or his supervisor did not correct the clearance readback.

Related reports:

Google
 

Original NASA ASRS Text

Title: 2 ACR FLTS ARE ACCUSED BY GND CTL SUPVR OF XING RWY 12R WITHOUT CLRNC AT STL, MO.

Narrative: MAY/XA/01, ACFT XXX AT APPROX XA50 EXITED RWY 12L TO HOLD SHORT RWY 12R BEHIND ACR Y IN STL. WE READ BACK THE EXIT AND HOLD SHORT BEHIND ACR Y, CONTACTED GND 121.9. CONTACTED GND AND REPEATED HOLD SHORT RWY 12R. HELD WITH ACR Y IN FRONT FOR ABOUT 1-2 MINS, THEN CLRNC TO CROSS RWY 12R TO PARKING EXPEDITE. WE READ BACK 'FLT XXX ACR X CLR TO CROSS RWY 12R TO PARKING.' NO RESPONSE FROM GND UNTIL JUST PRIOR TO PULLING IN TO GATE AT ENG SHUTDOWN. THEY ASKED IF WE HAD RECEIVED A CLRNC TO CROSS THE RWY. WE RESPONDED YES WE HAD AND THAT WE HAD READ IT BACK TO THEM. THEY SAID THEY HAD TRAINING GOING ON AT THE TIME AND THAT THEY WOULD GET BACK TO US. CAPT SPOKE TO THEM AGAIN AND THE SUPVR TOLD HIM THAT THEY HAD REVIEWED TAPES AND NOTHING WAS GOING TO BE RPTED BUT JUST WANTED US TO BE AWARE OF DANGER OF XING RWYS WITHOUT A CLRNC. HE SAID TRAINING IN THE TWR/GND WAS TAKING PLACE AT THE TIME. NO ACTIONS REQUIRED. AT NO TIME WAS THERE ANY DANGER TO ANY ACFT OR PERSONNEL. SUPPLEMENTAL INFO FROM ACN 510969: ATC GND HAD TRAINEE WORKING FREQ. 3 OTHER ACR FLTS AND OUR ACFT WAITING TO CROSS RWY 12R AT STL AFTER LNDG RWY 12L. CTLR'S ATTEMPT TO CLR MULTIPLE ACFT ACROSS AT ONCE (STANDARD PRACTICE AT STL) MUFFED THE CALL SIGNS. THE READBACK WAS CLR, NO 'SLANG' AND NOT BLOCKED. AFTER READBACK WAS LONG SILENCE ON FREQ WHERE OPPORTUNITY TO CORRECT CLRNC WAS AVAILABLE. THIS WAS AN ATC DEV AS THE TRAINEE OR HIS SUPVR DID NOT CORRECT THE CLRNC READBACK.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.