An air carrier light transport crew landed without tower clearance.

Attributes
ACN	238088
Time
Date	199304
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : atl tower : atl
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	descent : approach landing other
Route In Use	approach : straight in approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 225 flight time total : 5250 flight time type : 3000
ASRS Report	238088
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 160 flight time total : 12500 flight time type : 160
ASRS Report	238109
Events
Anomaly	incursion : landing without clearance non adherence : far non adherence : clearance other anomaly other
Independent Detector	other controllera 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:

Final controller instructed us to contact tower at the OM. Just prior to the marker, we had a flap disagreement. Our attention was diverted while handling that problem, and I forgot to change over to the tower. We landed and realized our mistake while holding short of runway 26L. Supplemental information from acn 238109: we were also close in (7 mi). At this time the aircraft developed the following problems: the electronic control unit for the left engine was inoperative, which would not allow the engines to be selected to idle, and when full flaps were selected, they stopped at an intermediate position requiring the first officer to look up a new landing reference speed. This confusion resulted in the first officer not calling for landing clearance from atl tower although he did call out prior to landing 'gear 3 green, cleared to land.' this was the 4TH leg of a long day (last landing scheduled for trip) and fatigue was beginning to set in.

Original NASA ASRS Text

Title: AN ACR LTT CREW LANDED WITHOUT TWR CLRNC.

Narrative: FINAL CTLR INSTRUCTED US TO CONTACT TWR AT THE OM. JUST PRIOR TO THE MARKER, WE HAD A FLAP DISAGREEMENT. OUR ATTN WAS DIVERTED WHILE HANDLING THAT PROB, AND I FORGOT TO CHANGE OVER TO THE TWR. WE LANDED AND REALIZED OUR MISTAKE WHILE HOLDING SHORT OF RWY 26L. SUPPLEMENTAL INFO FROM ACN 238109: WE WERE ALSO CLOSE IN (7 MI). AT THIS TIME THE ACFT DEVELOPED THE FOLLOWING PROBS: THE ELECTRONIC CTL UNIT FOR THE L ENG WAS INOP, WHICH WOULD NOT ALLOW THE ENGS TO BE SELECTED TO IDLE, AND WHEN FULL FLAPS WERE SELECTED, THEY STOPPED AT AN INTERMEDIATE POS REQUIRING THE FO TO LOOK UP A NEW LNDG REF SPD. THIS CONFUSION RESULTED IN THE FO NOT CALLING FOR LNDG CLRNC FROM ATL TWR ALTHOUGH HE DID CALL OUT PRIOR TO LNDG 'GEAR 3 GREEN, CLRED TO LAND.' THIS WAS THE 4TH LEG OF A LONG DAY (LAST LNDG SCHEDULED FOR TRIP) AND FATIGUE WAS BEGINNING TO SET IN.

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.