Air carrier landing without clearance.

Attributes
ACN	191423
Time
Date	199110
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	agl bound lower : 0 agl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sea tracon : pdx
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 4000 flight time type : 1000
ASRS Report	191423
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 6000
ASRS Report	191243
Events
Anomaly	incursion : landing without clearance non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During final approach to 16R the controller told us to switch to tower frequency. However, we forgot to call the tower and landed without clearance. On roll out we noticed a red light from the tower, but did not know if it was for us. Rolled out on tower frequency, he told us to cross the left runway and contact ground. No conflict was noted. Our early wake-up and the subsequent 5 1/2 hours of flying made us tired and probably contributed to the incident. Supplemental information from acn 191243. During final approach to sea-tac, forgot to switch to the tower and landed without clearance. Switched to tower frequency on roll out. No conflict with other aircraft. This oversight attributed to an early morning wake-up. Very tired during the flight.

Original NASA ASRS Text

Title: ACR LNDG WITHOUT CLRNC.

Narrative: DURING FINAL APCH TO 16R THE CTLR TOLD US TO SWITCH TO TWR FREQ. HOWEVER, WE FORGOT TO CALL THE TWR AND LANDED WITHOUT CLRNC. ON ROLL OUT WE NOTICED A RED LIGHT FROM THE TWR, BUT DID NOT KNOW IF IT WAS FOR US. ROLLED OUT ON TWR FREQ, HE TOLD US TO CROSS THE L RWY AND CONTACT GND. NO CONFLICT WAS NOTED. OUR EARLY WAKE-UP AND THE SUBSEQUENT 5 1/2 HRS OF FLYING MADE US TIRED AND PROBABLY CONTRIBUTED TO THE INCIDENT. SUPPLEMENTAL INFO FROM ACN 191243. DURING FINAL APCH TO SEA-TAC, FORGOT TO SWITCH TO THE TWR AND LANDED WITHOUT CLRNC. SWITCHED TO TWR FREQ ON ROLL OUT. NO CONFLICT WITH OTHER ACFT. THIS OVERSIGHT ATTRIBUTED TO AN EARLY MORNING WAKE-UP. VERY TIRED DURING THE FLT.

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.