Fatigued and complacent low time captain of B737-800 may have landed without landing clearance.

Attributes
ACN	788667
Time
Date	200805
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zzz.tracon
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 130 flight time total : 1200 flight time type : 130
ASRS Report	788667
Events
Anomaly	incursion : landing without clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Environmental Factor ATC Human Performance Flight Crew Human Performance
Primary Problem	Ambiguous

Narrative:

Possible landing in ZZZ without a clearance from tower. Fatigue was a factor as well as distraction created by the B737-800 HUD for me; a relatively new captain. There is a remote possibility we landed without a clearance. This was brought on by some confusion on the ground when switching over; once clear of the runway; to ZZZ ground frequency. This was day 4 of a trip with an XA00 takeoff. We were both tired and a bit complacent. Low time in the airplane for me was a factor as well.

Original NASA ASRS Text

Title: FATIGUED AND COMPLACENT LOW TIME CAPTAIN OF B737-800 MAY HAVE LANDED WITHOUT LNDG CLRNC.

Narrative: POSSIBLE LNDG IN ZZZ WITHOUT A CLRNC FROM TWR. FATIGUE WAS A FACTOR AS WELL AS DISTR CREATED BY THE B737-800 HUD FOR ME; A RELATIVELY NEW CAPT. THERE IS A REMOTE POSSIBILITY WE LANDED WITHOUT A CLRNC. THIS WAS BROUGHT ON BY SOME CONFUSION ON THE GND WHEN SWITCHING OVER; ONCE CLR OF THE RWY; TO ZZZ GND FREQ. THIS WAS DAY 4 OF A TRIP WITH AN XA00 TKOF. WE WERE BOTH TIRED AND A BIT COMPLACENT. LOW TIME IN THE AIRPLANE FOR ME WAS A FACTOR AS WELL.

Data retrieved from NASA's ASRS site as of May 2009 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.