What was found
AT APPROX 3000 DESCENDING, SMELLED ELEC BURNING. THE ODOR CONTINUED WITH NOW A HAZY SMOKE VIEW. THE NR 1 COMM WENT YELLOW X, SWITCHED TO COMM 2. MADE ALL RADIO CALLS WITH THE NR 2 COMM. EXPEDITED TO THE CLOSET RNWY, LANDED. REMOVED GIA-63W01 & INSTALLED NEW GIA-63W, PERFORMED IAW AMM TASK 31-41-05-400-801-A 400, SOFTWARE UPLOADED PN 006-B1633-B9 IAW AMM TASK 31-41-05-470-801-A 200. ALL STEPS PASSED. NO SMOKE OR SMELL DETECTED.