Unauthorized landing. The flight crew is unsure, but they may have landed without a clearance.

Attributes
ACN	303446
Time
Date	199504
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : tyr
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dfw
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 90 flight time total : 7500 flight time type : 2500
ASRS Report	303446
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	incursion : landing without clearance non adherence : far
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:

May have inadvertently landed at tyr without landing clearance. Ground control, tower and approach control all combined. Airport is non radar. Told to report leaving 4000 ft. Requested ILS straight-in versus circle. Issued straight-in clearance, landed, cleared to taxi in, all on same approach frequency. I'm just not positive we were cleared to land. Hence, this report. As for reasons why this happened. When flying to tyr, one should pay extra close attention. Kind of weird having approach control without radar. If one controller is working all those position he should state so.

Original NASA ASRS Text

Title: UNAUTH LNDG. THE FLC IS UNSURE, BUT THEY MAY HAVE LANDED WITHOUT A CLRNC.

Narrative: MAY HAVE INADVERTENTLY LANDED AT TYR WITHOUT LNDG CLRNC. GND CTL, TWR AND APCH CTL ALL COMBINED. ARPT IS NON RADAR. TOLD TO RPT LEAVING 4000 FT. REQUESTED ILS STRAIGHT-IN VERSUS CIRCLE. ISSUED STRAIGHT-IN CLRNC, LANDED, CLRED TO TAXI IN, ALL ON SAME APCH FREQ. I'M JUST NOT POSITIVE WE WERE CLRED TO LAND. HENCE, THIS RPT. AS FOR REASONS WHY THIS HAPPENED. WHEN FLYING TO TYR, ONE SHOULD PAY EXTRA CLOSE ATTN. KIND OF WEIRD HAVING APCH CTL WITHOUT RADAR. IF ONE CTLR IS WORKING ALL THOSE POS HE SHOULD STATE SO.

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.