Narrative:

I was at 3000 ft MSL on a 2 mi base leg for runway 19L at las. I was maintaining a visual separation from another C-402 was following. As I approached the final course for runway 19L behind the traffic I was told by approach controller to follow the traffic. I did as I was instructed. I continued onto final and landed behind the traffic after he had cleared the runway. As this traffic was rolling out and I was on short final, an emergency was occurring with a dc-9 on the field on a taxiway that intersects with runway 19L past whiskey. I landed on runway 19L behind the C-402 I was following. Approach control did not switch me to tower and the tower had not cleared me to land as far as I can remember. I landed and turned off at sierra facing west. Upon clearing the runway I realized I had not read back a landing clearance. I contacted ground on 121.9, stated my position on the field and asked if there was a problem with my landing. I was told there was not a problem with landing and told to taxi to parking. The approach controller, tower controller, and ground controller did not express any concern with my landing. I think they assumed I was cleared to land even though I cannot remember reading back a landing clearance. As I was on short final the controllers had diverted their attention to the emergency at the same time I had diverted my attention to landing and making my final gear check. The runway I landed on was completely free of any aircraft or emergency vehicles for its entire length. The controllers were busy directing 8 aircraft on the txwys near the distressed dc-9, 4 of which were T-38's communicating on UHF bands and a variety of emergency vehicles. The response I received from the ground controller gave me the impression I had done what they expected me to do, which was land. I was not asked to account for landing by any of the controling agencies. I may of been cleared to land and just not responded. I did not create any hazard to myself or others as far as I know.

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Original NASA ASRS Text

Title: SMT COMMUTER PLT BELIEVES HE LANDED WITHOUT CLRNC.

Narrative: I WAS AT 3000 FT MSL ON A 2 MI BASE LEG FOR RWY 19L AT LAS. I WAS MAINTAINING A VISUAL SEPARATION FROM ANOTHER C-402 WAS FOLLOWING. AS I APCHED THE FINAL COURSE FOR RWY 19L BEHIND THE TFC I WAS TOLD BY APCH CTLR TO FOLLOW THE TFC. I DID AS I WAS INSTRUCTED. I CONTINUED ONTO FINAL AND LANDED BEHIND THE TFC AFTER HE HAD CLRED THE RWY. AS THIS TFC WAS ROLLING OUT AND I WAS ON SHORT FINAL, AN EMER WAS OCCURRING WITH A DC-9 ON THE FIELD ON A TXWY THAT INTERSECTS WITH RWY 19L PAST WHISKEY. I LANDED ON RWY 19L BEHIND THE C-402 I WAS FOLLOWING. APCH CTL DID NOT SWITCH ME TO TWR AND THE TWR HAD NOT CLRED ME TO LAND AS FAR AS I CAN REMEMBER. I LANDED AND TURNED OFF AT SIERRA FACING W. UPON CLRING THE RWY I REALIZED I HAD NOT READ BACK A LNDG CLRNC. I CONTACTED GND ON 121.9, STATED MY POS ON THE FIELD AND ASKED IF THERE WAS A PROB WITH MY LNDG. I WAS TOLD THERE WAS NOT A PROB WITH LNDG AND TOLD TO TAXI TO PARKING. THE APCH CTLR, TWR CTLR, AND GND CTLR DID NOT EXPRESS ANY CONCERN WITH MY LNDG. I THINK THEY ASSUMED I WAS CLRED TO LAND EVEN THOUGH I CANNOT REMEMBER READING BACK A LNDG CLRNC. AS I WAS ON SHORT FINAL THE CTLRS HAD DIVERTED THEIR ATTN TO THE EMER AT THE SAME TIME I HAD DIVERTED MY ATTN TO LNDG AND MAKING MY FINAL GEAR CHK. THE RWY I LANDED ON WAS COMPLETELY FREE OF ANY ACFT OR EMER VEHICLES FOR ITS ENTIRE LENGTH. THE CTLRS WERE BUSY DIRECTING 8 ACFT ON THE TXWYS NEAR THE DISTRESSED DC-9, 4 OF WHICH WERE T-38'S COMMUNICATING ON UHF BANDS AND A VARIETY OF EMER VEHICLES. THE RESPONSE I RECEIVED FROM THE GND CTLR GAVE ME THE IMPRESSION I HAD DONE WHAT THEY EXPECTED ME TO DO, WHICH WAS LAND. I WAS NOT ASKED TO ACCOUNT FOR LNDG BY ANY OF THE CTLING AGENCIES. I MAY OF BEEN CLRED TO LAND AND JUST NOT RESPONDED. I DID NOT CREATE ANY HAZARD TO MYSELF OR OTHERS AS FAR AS I KNOW.

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.