Medium large transport cargo aircraft lands without clearance.

Attributes
ACN	160325
Time
Date	199010
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : msy
State Reference	LA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Dawn
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 130 flight time total : 3000 flight time type : 400
ASRS Report	160325
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : landing without clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After landing at new I cannot be sure we were cleared for the approach or clearance to land. The problem arose due to marginal WX in msy. The localizer backcourse to runway 19 was in use. This approach requires several stepdowns and therefore requiring many callouts as per our company procedures. (Both of us were busy.) the captain was flying I was acting as support pilot. It was discovered after landing that we were still on approach control frequency. Although the approach controller may have cleared us to land I'm not certain. Putting the clearance to land on the before landing checklist may be a possible solution.

Original NASA ASRS Text

Title: MLG CARGO ACFT LANDS WITHOUT CLRNC.

Narrative: AFTER LNDG AT NEW I CANNOT BE SURE WE WERE CLRED FOR THE APCH OR CLRNC TO LAND. THE PROB AROSE DUE TO MARGINAL WX IN MSY. THE LOC BACKCOURSE TO RWY 19 WAS IN USE. THIS APCH REQUIRES SEVERAL STEPDOWNS AND THEREFORE REQUIRING MANY CALLOUTS AS PER OUR COMPANY PROCS. (BOTH OF US WERE BUSY.) THE CAPT WAS FLYING I WAS ACTING AS SUPPORT PLT. IT WAS DISCOVERED AFTER LNDG THAT WE WERE STILL ON APCH CTL FREQ. ALTHOUGH THE APCH CTLR MAY HAVE CLRED US TO LAND I'M NOT CERTAIN. PUTTING THE CLRNC TO LAND ON THE BEFORE LNDG CHKLIST MAY BE A POSSIBLE SOLUTION.

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.