Narrative:

Smelled smoke in cockpit while being vectored for ILS dtw runway 21R. Told approach we needed early turn on due to smoke in cockpit. While turning onto base, discovered source of problem was plastic bag that had fallen against hot bleed air duct. I went back and moved bag away from duct. Returned to cockpit, did final approach checklist and landed. After turning off runway, realized we hadn't contacted tower for landing clearance. In the future, I will add 'landing clearance' to my mental checklist that I do at 200 ft to double-check gear down and flaps full. Tower said no conflict existed with other traffic.

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Original NASA ASRS Text

Title: FLC OF SMT JET ATX ACFT FAILED TO OBTAIN LNDG CLRNC DUE TO AN ACFT EQUIP PROB DISTR PRIOR TO LNDG.

Narrative: SMELLED SMOKE IN COCKPIT WHILE BEING VECTORED FOR ILS DTW RWY 21R. TOLD APCH WE NEEDED EARLY TURN ON DUE TO SMOKE IN COCKPIT. WHILE TURNING ONTO BASE, DISCOVERED SOURCE OF PROB WAS PLASTIC BAG THAT HAD FALLEN AGAINST HOT BLEED AIR DUCT. I WENT BACK AND MOVED BAG AWAY FROM DUCT. RETURNED TO COCKPIT, DID FINAL APCH CHKLIST AND LANDED. AFTER TURNING OFF RWY, REALIZED WE HADN'T CONTACTED TWR FOR LNDG CLRNC. IN THE FUTURE, I WILL ADD 'LNDG CLRNC' TO MY MENTAL CHKLIST THAT I DO AT 200 FT TO DOUBLE-CHK GEAR DOWN AND FLAPS FULL. TWR SAID NO CONFLICT EXISTED WITH OTHER TFC.

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.