Landed without clearance.

Attributes
ACN	168158
Time
Date	199101
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : adq
State Reference	AK
Altitude	msl bound lower : 73 msl bound upper : 800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : adq
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 4000
ASRS Report	168158
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	incursion : landing without clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While executing a VOR approach to airport center cleared us for approach. Told us to contact kodiak tower. We complied. Tower told us to report FAF inbound. We continued approach. He asked (controller) for our position about 2 mins later. I reported 2 mi from FAF. Our speed on the approach was 140 KTS due to moderate icing conditions and turbulence. Just as we were about to reach the FAF, the person working on clearing the runways of ice and snow started transmitting on the tower frequency with a lengthy report on the multiple runway conditions. I thought I may have been monitoring a wrong frequency. I transmitted aircraft identify FAF inbound on frequency. No reply from tower and snow removal operation kept transmitting. We had about 1 min till missed approach point. Conditions kept us monitoring approach and looking for airport. Just above minimums we sighted airport and proceeded visually to airport. Upon landing we realized we had landed west/O clearance to do so. I suggest that all xmissions on tower frequency be between aircraft and tower only. The maintenance report to the tower should be on separated frequencys to free up and prevent confusion. This confusion on the frequency caused the crew to fail follow up and receive the proper clearance. Better crew vigilance will also be practice in the future. No conflict with any other aircraft was involved, as no other aircraft were in the control zone.

Original NASA ASRS Text

Title: LANDED WITHOUT CLRNC.

Narrative: WHILE EXECUTING A VOR APCH TO ARPT CENTER CLRED US FOR APCH. TOLD US TO CONTACT KODIAK TWR. WE COMPLIED. TWR TOLD US TO RPT FAF INBND. WE CONTINUED APCH. HE ASKED (CTLR) FOR OUR POS ABOUT 2 MINS LATER. I RPTED 2 MI FROM FAF. OUR SPD ON THE APCH WAS 140 KTS DUE TO MODERATE ICING CONDITIONS AND TURB. JUST AS WE WERE ABOUT TO REACH THE FAF, THE PERSON WORKING ON CLRING THE RWYS OF ICE AND SNOW STARTED XMITTING ON THE TWR FREQ WITH A LENGTHY RPT ON THE MULTIPLE RWY CONDITIONS. I THOUGHT I MAY HAVE BEEN MONITORING A WRONG FREQ. I XMITTED ACFT IDENT FAF INBND ON FREQ. NO REPLY FROM TWR AND SNOW REMOVAL OPERATION KEPT XMITTING. WE HAD ABOUT 1 MIN TILL MISSED APCH POINT. CONDITIONS KEPT US MONITORING APCH AND LOOKING FOR ARPT. JUST ABOVE MINIMUMS WE SIGHTED ARPT AND PROCEEDED VISUALLY TO ARPT. UPON LNDG WE REALIZED WE HAD LANDED W/O CLRNC TO DO SO. I SUGGEST THAT ALL XMISSIONS ON TWR FREQ BE BTWN ACFT AND TWR ONLY. THE MAINT RPT TO THE TWR SHOULD BE ON SEPARATED FREQS TO FREE UP AND PREVENT CONFUSION. THIS CONFUSION ON THE FREQ CAUSED THE CREW TO FAIL FOLLOW UP AND RECEIVE THE PROPER CLRNC. BETTER CREW VIGILANCE WILL ALSO BE PRACTICE IN THE FUTURE. NO CONFLICT WITH ANY OTHER ACFT WAS INVOLVED, AS NO OTHER ACFT WERE IN THE CTL ZONE.

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.