Flight crew of an atx cargo twin landed without clearance.

Attributes
ACN	316368
Time
Date	199509
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : ont
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	PA-31 Navajo Chieftan/Mojave/Navajo T1020
Operating Under FAR Part	Part 135
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 150 flight time total : 5500 flight time type : 600
ASRS Report	316368
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	incursion : landing without clearance non adherence : far other anomaly other
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:

On a flight from burbank to ontario, I inadvertently landed at ontario airport without a landing clearance. While en route to ontario using VFR flight following, we were handed off to a controller on frequency 125.5 (socal approach). This controller was hard to hear and understand without turning the volume on the radio full up. My copilot could not understand him at all. As we approached ont, I reported to approach control that the airport was in sight (approximately 10 mi west). We were instructed to make a straight-in to runway 8R. This was the last transmission we heard from approach. I made our approach and landed on runway 8R, rolled to the end of the runway and exited. As I was about to request taxi to parking, I noticed that the radio was still on approach frequency (125.5). I immediately contacted the tower and apologized. The tower just said to taxi to parking.

Original NASA ASRS Text

Title: FLC OF AN ATX CARGO TWIN LANDED WITHOUT CLRNC.

Narrative: ON A FLT FROM BURBANK TO ONTARIO, I INADVERTENTLY LANDED AT ONTARIO ARPT WITHOUT A LNDG CLRNC. WHILE ENRTE TO ONTARIO USING VFR FLT FOLLOWING, WE WERE HANDED OFF TO A CTLR ON FREQ 125.5 (SOCAL APCH). THIS CTLR WAS HARD TO HEAR AND UNDERSTAND WITHOUT TURNING THE VOLUME ON THE RADIO FULL UP. MY COPLT COULD NOT UNDERSTAND HIM AT ALL. AS WE APCHED ONT, I RPTED TO APCH CTL THAT THE ARPT WAS IN SIGHT (APPROX 10 MI W). WE WERE INSTRUCTED TO MAKE A STRAIGHT-IN TO RWY 8R. THIS WAS THE LAST XMISSION WE HEARD FROM APCH. I MADE OUR APCH AND LANDED ON RWY 8R, ROLLED TO THE END OF THE RWY AND EXITED. AS I WAS ABOUT TO REQUEST TAXI TO PARKING, I NOTICED THAT THE RADIO WAS STILL ON APCH FREQ (125.5). I IMMEDIATELY CONTACTED THE TWR AND APOLOGIZED. THE TWR JUST SAID TO TAXI TO PARKING.

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.