A B737-800 flight lands without landing clearance at sea, wa.

Attributes
ACN	488760
Time
Date	200010
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea.airport
State Reference	WA
Altitude	agl bound lower : 0 agl bound upper : 1500
Environment
Flight Conditions	Mixed
Light	Dawn
Aircraft 1
Controlling Facilities	tracon : s46.tracon tower : sea.tower
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : ns other
Flight Phase	descent : vacating altitude landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 280 flight time total : 5400 flight time type : 1600
ASRS Report	488760
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : landing without clearance inflight encounter : weather non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Aircraft Environmental Factor ATC Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Landed at sea without landing clearance. When captain called for flaps, we were given frequency change to tower. Flaps took longer than normal before they moved. I focused on what I thought may be a flap problem and focused only on that. When they moved I continued with altitude callouts for ILS. Upon landing I noticed I had failed to speak with tower. Tower cleared us to taxi to gate. Chain of events: WX dropped/ATIS. Semi unstable approach flown. Perceived flap problem. Tired. Frequency change at time flap setting was changed. No verification/communication between captain and I regarding frequency change to tower. Human factors: tired (both of us). Off body schedule flight. I focused on problem.

Original NASA ASRS Text

Title: A B737-800 FLT LANDS WITHOUT LNDG CLRNC AT SEA, WA.

Narrative: LANDED AT SEA WITHOUT LNDG CLRNC. WHEN CAPT CALLED FOR FLAPS, WE WERE GIVEN FREQ CHANGE TO TWR. FLAPS TOOK LONGER THAN NORMAL BEFORE THEY MOVED. I FOCUSED ON WHAT I THOUGHT MAY BE A FLAP PROB AND FOCUSED ONLY ON THAT. WHEN THEY MOVED I CONTINUED WITH ALT CALLOUTS FOR ILS. UPON LNDG I NOTICED I HAD FAILED TO SPEAK WITH TWR. TWR CLRED US TO TAXI TO GATE. CHAIN OF EVENTS: WX DROPPED/ATIS. SEMI UNSTABLE APCH FLOWN. PERCEIVED FLAP PROB. TIRED. FREQ CHANGE AT TIME FLAP SETTING WAS CHANGED. NO VERIFICATION/COM BTWN CAPT AND I REGARDING FREQ CHANGE TO TWR. HUMAN FACTORS: TIRED (BOTH OF US). OFF BODY SCHEDULE FLT. I FOCUSED ON PROB.

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.