Cargo flight on all night trip lands without tower contact.

Attributes
ACN	182328
Time
Date	199106
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : pit
State Reference	PA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Transport
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 : 100 flight time total : 4500 flight time type : 75
ASRS Report	182328
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	incursion : landing without clearance non adherence : far non adherence : clearance
Independent Detector	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:

During final approach to pit, runway 10L, approach advised to contact tower, giving 2 frequencys. Because of extreme fatigue from an all night flight, and after calling the tower receiving no answer I assumed we were clear to land. After doing so and taxiing off the runway, I noticed the wrong frequency was tuned in. I called the tower on the correct channel and explained, then was cleared to the ramp.

Original NASA ASRS Text

Title: CARGO FLT ON ALL NIGHT TRIP LANDS WITHOUT TWR CONTACT.

Narrative: DURING FINAL APCH TO PIT, RWY 10L, APCH ADVISED TO CONTACT TWR, GIVING 2 FREQS. BECAUSE OF EXTREME FATIGUE FROM AN ALL NIGHT FLT, AND AFTER CALLING THE TWR RECEIVING NO ANSWER I ASSUMED WE WERE CLR TO LAND. AFTER DOING SO AND TAXIING OFF THE RWY, I NOTICED THE WRONG FREQ WAS TUNED IN. I CALLED THE TWR ON THE CORRECT CHANNEL AND EXPLAINED, THEN WAS CLRED TO THE 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.