BE33 landed at jef without contacting the tower.

Attributes
ACN	362180
Time
Date	199703
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : jef
State Reference	MO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zkl tower : jef tower : den
Operator	general aviation : personal
Make Model Name	Bonanza 33
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 30 flight time total : 1220 flight time type : 650
ASRS Report	362180
Person 2
Affiliation	Other
Function	observation : passenger
Qualification	other other : other
Events
Anomaly	incursion : landing without clearance non adherence : clearance non adherence : far
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

When advised by center to expect ILS runway 31 approach, appropriate frequencys were set per approach plate. After cleared for approach, proceeded. Center advised change to tower frequency. I thought she said 125.1, which is what I had set. I believe I repeated that back to her, to which she responded affirmative. I called tower. When I received no response, I mistakenly assumed the tower was closed. I then transmitted 'jefferson city traffic' advisories as to my intentions/position. After landing, I was requested to call the tower via the father of the employee that was with me. Contributing factors: on a prior flight to mhk, I could not reach the tower. I went back to center, and after some delay, I was told 'tower is closed.' this flight originated at mhk, and I think this contributed to my impression that the tower was closed. Also, the employee had told me she had flown in IMC before, but she was scared during the descent, asking if we were going to die. I was anxious to get her on the ground without delay. Prevention: put operating hours on terminal procedures if the hours are repetitive.

Original NASA ASRS Text

Title: BE33 LANDED AT JEF WITHOUT CONTACTING THE TWR.

Narrative: WHEN ADVISED BY CTR TO EXPECT ILS RWY 31 APCH, APPROPRIATE FREQS WERE SET PER APCH PLATE. AFTER CLRED FOR APCH, PROCEEDED. CTR ADVISED CHANGE TO TWR FREQ. I THOUGHT SHE SAID 125.1, WHICH IS WHAT I HAD SET. I BELIEVE I REPEATED THAT BACK TO HER, TO WHICH SHE RESPONDED AFFIRMATIVE. I CALLED TWR. WHEN I RECEIVED NO RESPONSE, I MISTAKENLY ASSUMED THE TWR WAS CLOSED. I THEN XMITTED 'JEFFERSON CITY TFC' ADVISORIES AS TO MY INTENTIONS/POS. AFTER LNDG, I WAS REQUESTED TO CALL THE TWR VIA THE FATHER OF THE EMPLOYEE THAT WAS WITH ME. CONTRIBUTING FACTORS: ON A PRIOR FLT TO MHK, I COULD NOT REACH THE TWR. I WENT BACK TO CTR, AND AFTER SOME DELAY, I WAS TOLD 'TWR IS CLOSED.' THIS FLT ORIGINATED AT MHK, AND I THINK THIS CONTRIBUTED TO MY IMPRESSION THAT THE TWR WAS CLOSED. ALSO, THE EMPLOYEE HAD TOLD ME SHE HAD FLOWN IN IMC BEFORE, BUT SHE WAS SCARED DURING THE DSCNT, ASKING IF WE WERE GOING TO DIE. I WAS ANXIOUS TO GET HER ON THE GND WITHOUT DELAY. PREVENTION: PUT OPERATING HRS ON TERMINAL PROCS IF THE HRS ARE REPETITIVE.

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.