Narrative:

Simultaneous ILS approachs to runways 36L and 36R. Air carrier X; a CRJ2; was instructed by the final controller to contact tower about 5 1/2 mi south of the IAF; hadan. As air carrier X approached abeam freez; the IAF for runway 36L; the pilot had not contacted the tower. I; as the final monitor controller; attempted to make contact with air carrier X. Air carrier X answered; and I told them that they needed to contact the tower as soon as they were instructed while executing simultaneous approachs. 10 mins later; the same thing happened with air carrier Y; a CRJ2. I want pilots to know that being on the correct frequency is an important part of separation during simultaneous ILS approachs. The monitor controller must be in direct contact with the aircraft on the approach. This usually means the aircraft must be on the tower frequency.

Related reports:

Google
 

Original NASA ASRS Text

Title: MEM TRACON MONITOR CTLR VOICED CONCERN REGARDING SOME FLT CREWS' FAILURE TO CHANGE FREQS AS ASSIGNED DURING SIMULTANEOUS APCH PROCS.

Narrative: SIMULTANEOUS ILS APCHS TO RWYS 36L AND 36R. ACR X; A CRJ2; WAS INSTRUCTED BY THE FINAL CTLR TO CONTACT TWR ABOUT 5 1/2 MI S OF THE IAF; HADAN. AS ACR X APCHED ABEAM FREEZ; THE IAF FOR RWY 36L; THE PLT HAD NOT CONTACTED THE TWR. I; AS THE FINAL MONITOR CTLR; ATTEMPTED TO MAKE CONTACT WITH ACR X. ACR X ANSWERED; AND I TOLD THEM THAT THEY NEEDED TO CONTACT THE TWR AS SOON AS THEY WERE INSTRUCTED WHILE EXECUTING SIMULTANEOUS APCHS. 10 MINS LATER; THE SAME THING HAPPENED WITH ACR Y; A CRJ2. I WANT PLTS TO KNOW THAT BEING ON THE CORRECT FREQ IS AN IMPORTANT PART OF SEPARATION DURING SIMULTANEOUS ILS APCHS. THE MONITOR CTLR MUST BE IN DIRECT CONTACT WITH THE ACFT ON THE APCH. THIS USUALLY MEANS THE ACFT MUST BE ON THE TWR FREQ.

Data retrieved from NASA's ASRS site as of May 2009 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.