Narrative:

Hnl center had just given an interisland company flight a lnv WX brief and asked if I had heard it. I confirmed I had, it was the same information I had received from FSS before leaving hnl. Center also asked the WX and viz east of my position which I provided. Lny was partly overcast especially south and east of the VOR so I descended to 500 ft and flew to madele bay to check the possibility of an approach to runway 21 from the south. During this time a commercial company called and asked how lny looked. The area south of lanai and east was very clear but a left traffic pattern entry to runway 21 didn't seem advisable due to intermittent low clouds. So I turned around, flew northwest around palaoa point to check if a runway 3 approach was possible the ceilings were improved and I climbed to 2000 AGL over the barge harbor. From there I was able to see the entire airport and lanai city to the east so I entered a left base for runway 3 and prepared to land. The approach was normal with winds variable but nearing approximately 110 degree at 10 KTS. Just before touchdown I encountered an extremely strong gust of wind from my right. I corrected for the gust, the wind appeared to stop from what I believe was LLWS. The plane dropped with no warning (my airspeed was 100 KIAS) and I hit the runway hard. I attempted to keep the nose up but the plane bounced hard again and I believe the left main gear collapsed. During the next few seconds I attempted to keep control while turning off the fuel valves, mixture controls and all electrical switches. The plane skidded down the runway then slid left from the runway across the shoulder until it came to rest. I verified all switches were off and exited the airplane. There was no fuel leakage so I secured the plane and walked back to the terminal and airport fire department where I reported the situation. I then called the owner of company and informed him what happened. Approximately 15 mins later, captain of the lanai city fire department showed up and told the airport fire personnel and I, he had witnessed the situation. He stated he was watching the landing which appeared normal when suddenly the plane dropped to the runway and bounced. He has agreed to make a statement. He later advised there was another eye witness with him, a mr Y, who would also prepare a statement. To prevent recurrence, recommend: remove the small hill which runs parallel to runway 3 on the south side for approximately 500-1000 ft. It's presence will/does promote wind shear during south wind conditions.

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Original NASA ASRS Text

Title: AIR TAXI CARGO FLT HAS HARD LNDG DUE APPARENT LLWS. GEAR COLLAPSE ON BOUNCE BACK.

Narrative: HNL CTR HAD JUST GIVEN AN INTERISLAND COMPANY FLT A LNV WX BRIEF AND ASKED IF I HAD HEARD IT. I CONFIRMED I HAD, IT WAS THE SAME INFO I HAD RECEIVED FROM FSS BEFORE LEAVING HNL. CTR ALSO ASKED THE WX AND VIZ E OF MY POS WHICH I PROVIDED. LNY WAS PARTLY OVCST ESPECIALLY S AND E OF THE VOR SO I DSNDED TO 500 FT AND FLEW TO MADELE BAY TO CHK THE POSSIBILITY OF AN APCH TO RWY 21 FROM THE S. DURING THIS TIME A COMMERCIAL COMPANY CALLED AND ASKED HOW LNY LOOKED. THE AREA S OF LANAI AND E WAS VERY CLR BUT A L TFC PATTERN ENTRY TO RWY 21 DIDN'T SEEM ADVISABLE DUE TO INTERMITTENT LOW CLOUDS. SO I TURNED AROUND, FLEW NW AROUND PALAOA POINT TO CHK IF A RWY 3 APCH WAS POSSIBLE THE CEILINGS WERE IMPROVED AND I CLBED TO 2000 AGL OVER THE BARGE HARBOR. FROM THERE I WAS ABLE TO SEE THE ENTIRE ARPT AND LANAI CITY TO THE E SO I ENTERED A L BASE FOR RWY 3 AND PREPARED TO LAND. THE APCH WAS NORMAL WITH WINDS VARIABLE BUT NEARING APPROX 110 DEG AT 10 KTS. JUST BEFORE TOUCHDOWN I ENCOUNTERED AN EXTREMELY STRONG GUST OF WIND FROM MY R. I CORRECTED FOR THE GUST, THE WIND APPEARED TO STOP FROM WHAT I BELIEVE WAS LLWS. THE PLANE DROPPED WITH NO WARNING (MY AIRSPD WAS 100 KIAS) AND I HIT THE RWY HARD. I ATTEMPTED TO KEEP THE NOSE UP BUT THE PLANE BOUNCED HARD AGAIN AND I BELIEVE THE L MAIN GEAR COLLAPSED. DURING THE NEXT FEW SECONDS I ATTEMPTED TO KEEP CTL WHILE TURNING OFF THE FUEL VALVES, MIXTURE CTLS AND ALL ELECTRICAL SWITCHES. THE PLANE SKIDDED DOWN THE RWY THEN SLID L FROM THE RWY ACROSS THE SHOULDER UNTIL IT CAME TO REST. I VERIFIED ALL SWITCHES WERE OFF AND EXITED THE AIRPLANE. THERE WAS NO FUEL LEAKAGE SO I SECURED THE PLANE AND WALKED BACK TO THE TERMINAL AND ARPT FIRE DEPT WHERE I RPTED THE SITUATION. I THEN CALLED THE OWNER OF COMPANY AND INFORMED HIM WHAT HAPPENED. APPROX 15 MINS LATER, CAPT OF THE LANAI CITY FIRE DEPT SHOWED UP AND TOLD THE ARPT FIRE PERSONNEL AND I, HE HAD WITNESSED THE SITUATION. HE STATED HE WAS WATCHING THE LNDG WHICH APPEARED NORMAL WHEN SUDDENLY THE PLANE DROPPED TO THE RWY AND BOUNCED. HE HAS AGREED TO MAKE A STATEMENT. HE LATER ADVISED THERE WAS ANOTHER EYE WITNESS WITH HIM, A MR Y, WHO WOULD ALSO PREPARE A STATEMENT. TO PREVENT RECURRENCE, RECOMMEND: REMOVE THE SMALL HILL WHICH RUNS PARALLEL TO RWY 3 ON THE S SIDE FOR APPROX 500-1000 FT. IT'S PRESENCE WILL/DOES PROMOTE WIND SHEAR DURING S WIND CONDITIONS.

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.