Air carrier landing without clearance.

Attributes
ACN	190975
Time
Date	199110
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sfo
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 1500
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : oak tower : sfo
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach descent other landing other
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 240 flight time total : 8000 flight time type : 500
ASRS Report	190975
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : landing without clearance non adherence : published procedure non adherence : far
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:

Forgot to switch over to control tower for clearance to land. My brain took a short vacation. Upon landing I noticed that approach frequency was on primary side of dual head transmitter. That was when I was going to put in ground control frequency. Switched over to tower -- said 'sorry', then talked to ground. They didn't even mention anything was wrong.

Original NASA ASRS Text

Title: ACR LNDG WITHOUT CLRNC.

Narrative: FORGOT TO SWITCH OVER TO CTL TWR FOR CLRNC TO LAND. MY BRAIN TOOK A SHORT VACATION. UPON LNDG I NOTICED THAT APCH FREQ WAS ON PRIMARY SIDE OF DUAL HEAD XMITTER. THAT WAS WHEN I WAS GOING TO PUT IN GND CTL FREQ. SWITCHED OVER TO TWR -- SAID 'SORRY', THEN TALKED TO GND. THEY DIDN'T EVEN MENTION ANYTHING WAS WRONG.

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.