Tower controller questioned a flight crew's having obtained a landing clearance.

Attributes
ACN	318007
Time
Date	199510
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : rsw
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sfo
Operator	general aviation : corporate
Make Model Name	HS 125 Series 700
Operating Under FAR Part	Part 91
Navigation In Use	Other
Flight Phase	landing other
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 250
ASRS Report	318007
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	incursion : landing without clearance non adherence : far non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation

Narrative:

Approach cleared for visual runway 5, call tower 5 mi final. At 5 mi final called tower, reported inbound. Called tower second time at 3 mi final. A male voice stated, 'cleared to land runway 5.' called in 'cleared to land runway 5.' landed, turned off runway. Called tower and a female voice told us to contact ground. Called ground for taxi instructions. Male controller on ground cleared us to taxi to ramp then asked if we had received a landing clearance. We stated we had, from a male voice, and were surprised at hearing a female voice on tower frequency after landing. Ground stated no problem had occurred, clear to cross runway 13/31 and taxi to ramp. Also, he had our departure clearance when we were ready. Taxied to ramp.

Original NASA ASRS Text

Title: TWR CTLR QUESTIONED A FLC'S HAVING OBTAINED A LNDG CLRNC.

Narrative: APCH CLRED FOR VISUAL RWY 5, CALL TWR 5 MI FINAL. AT 5 MI FINAL CALLED TWR, RPTED INBOUND. CALLED TWR SECOND TIME AT 3 MI FINAL. A MALE VOICE STATED, 'CLRED TO LAND RWY 5.' CALLED IN 'CLRED TO LAND RWY 5.' LANDED, TURNED OFF RWY. CALLED TWR AND A FEMALE VOICE TOLD US TO CONTACT GND. CALLED GND FOR TAXI INSTRUCTIONS. MALE CTLR ON GND CLRED US TO TAXI TO RAMP THEN ASKED IF WE HAD RECEIVED A LNDG CLRNC. WE STATED WE HAD, FROM A MALE VOICE, AND WERE SURPRISED AT HEARING A FEMALE VOICE ON TWR FREQ AFTER LNDG. GND STATED NO PROB HAD OCCURRED, CLR TO CROSS RWY 13/31 AND TAXI TO RAMP. ALSO, HE HAD OUR DEP CLRNC WHEN WE WERE READY. TAXIED TO RAMP.

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.