E120 crew landed at dfw without landing clearance.

Attributes
ACN	455160
Time
Date	199911
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 36l
Flight Phase	landing : roll
Route In Use	approach : visual approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 225 flight time total : 1315 flight time type : 650
ASRS Report	455160
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : landing without clearance inflight encounter : wake turbulence non adherence : company policies non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Regional approach cleared us for visual approach to runway 36L at dfw, following an MD80 5 mi ahead. PF encountered wake turbulence, so he began flying 1 DOT above GS. I was monitoring his approach. The frequency was very busy and congested. Approach control apparently forgot to tell us to go to tower, and I (PNF) failed to catch that. We landed without landing clearance. I did not even realize we were still on approach until we exited the runway. At that time, approach controller told us to contact tower. The captain telephoned the tower manager once we arrived at the gate and smoothed everything out. It is possible the tower cleared us to land even though we were not on the frequency and did not hear it. Contributing factor was that this was our 4TH leg of the day without any breaks between the legs. We hear landing clrncs so many times each day, sometimes it is hard to remember if we heard it for this particular landing. In addition, one of our checklist items is to verify landing clearance was received. Although I read this checklist item aloud, I know I was not concentrating. The problem was caused by my lack of attention and failure to verify items accurately on my checklist.

Original NASA ASRS Text

Title: E120 CREW LANDED AT DFW WITHOUT LNDG CLRNC.

Narrative: REGIONAL APCH CLRED US FOR VISUAL APCH TO RWY 36L AT DFW, FOLLOWING AN MD80 5 MI AHEAD. PF ENCOUNTERED WAKE TURB, SO HE BEGAN FLYING 1 DOT ABOVE GS. I WAS MONITORING HIS APCH. THE FREQ WAS VERY BUSY AND CONGESTED. APCH CTL APPARENTLY FORGOT TO TELL US TO GO TO TWR, AND I (PNF) FAILED TO CATCH THAT. WE LANDED WITHOUT LNDG CLRNC. I DID NOT EVEN REALIZE WE WERE STILL ON APCH UNTIL WE EXITED THE RWY. AT THAT TIME, APCH CTLR TOLD US TO CONTACT TWR. THE CAPT TELEPHONED THE TWR MGR ONCE WE ARRIVED AT THE GATE AND SMOOTHED EVERYTHING OUT. IT IS POSSIBLE THE TWR CLRED US TO LAND EVEN THOUGH WE WERE NOT ON THE FREQ AND DID NOT HEAR IT. CONTRIBUTING FACTOR WAS THAT THIS WAS OUR 4TH LEG OF THE DAY WITHOUT ANY BREAKS BTWN THE LEGS. WE HEAR LNDG CLRNCS SO MANY TIMES EACH DAY, SOMETIMES IT IS HARD TO REMEMBER IF WE HEARD IT FOR THIS PARTICULAR LNDG. IN ADDITION, ONE OF OUR CHKLIST ITEMS IS TO VERIFY LNDG CLRNC WAS RECEIVED. ALTHOUGH I READ THIS CHKLIST ITEM ALOUD, I KNOW I WAS NOT CONCENTRATING. THE PROB WAS CAUSED BY MY LACK OF ATTN AND FAILURE TO VERIFY ITEMS ACCURATELY ON MY CHKLIST.

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.