CL65 wingtip contacts ground during wind gust on landing cvg.

Attributes
ACN	437020
Time
Date	199905
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cvg.airport
State Reference	OH
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	landing : roll
Route In Use	approach : visual approach : traffic pattern arrival : vfr
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : multi engine pilot : atp
Experience	flight time last 90 days : 240 flight time total : 10950 flight time type : 3000
ASRS Report	437020
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 200 flight time total : 2700 flight time type : 300
ASRS Report	437019
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Landing runway 18R, winds 270 degrees at 10 KTS gusting to 18 KTS reported on ATIS, short final tower reported wind at 270 degrees at 13 KTS. Wind gust in the flare (or wind dropped off), the right wing dropped low, corrected. There was no bank angle warning from GPWS. On postflt inspection we found a scrape on the underside of the wingtip. Airspeed was normal over the threshold (slightly above vref) then decreased normally during the flare. Aircraft attitude appeared normal for these wind conditions (right wing lowered, left rudder) during the flare when suddenly the right wing dropped. The first officer was flying the aircraft. As I reached for the yoke, he was already correcting and we both held the yoke until the roll attitude was corrected. Thereafter, the landing was normal but firm. During this whole landing phase we never felt or heard contact with the runway. Callback conversation with reporter revealed the following information: reporter corrects statement to read that the GPWS does not operate below 50 ft AGL, but has increasing sensitivity up to that point on descent. He further states that the air carrier removed both crew members from flying status until such time that simulator instruction to reinforce crosswind landing techniques was accomplished.

Original NASA ASRS Text

Title: CL65 WINGTIP CONTACTS GND DURING WIND GUST ON LNDG CVG.

Narrative: LNDG RWY 18R, WINDS 270 DEGS AT 10 KTS GUSTING TO 18 KTS RPTED ON ATIS, SHORT FINAL TWR RPTED WIND AT 270 DEGS AT 13 KTS. WIND GUST IN THE FLARE (OR WIND DROPPED OFF), THE R WING DROPPED LOW, CORRECTED. THERE WAS NO BANK ANGLE WARNING FROM GPWS. ON POSTFLT INSPECTION WE FOUND A SCRAPE ON THE UNDERSIDE OF THE WINGTIP. AIRSPD WAS NORMAL OVER THE THRESHOLD (SLIGHTLY ABOVE VREF) THEN DECREASED NORMALLY DURING THE FLARE. ACFT ATTITUDE APPEARED NORMAL FOR THESE WIND CONDITIONS (R WING LOWERED, L RUDDER) DURING THE FLARE WHEN SUDDENLY THE R WING DROPPED. THE FO WAS FLYING THE ACFT. AS I REACHED FOR THE YOKE, HE WAS ALREADY CORRECTING AND WE BOTH HELD THE YOKE UNTIL THE ROLL ATTITUDE WAS CORRECTED. THEREAFTER, THE LNDG WAS NORMAL BUT FIRM. DURING THIS WHOLE LNDG PHASE WE NEVER FELT OR HEARD CONTACT WITH THE RWY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR CORRECTS STATEMENT TO READ THAT THE GPWS DOES NOT OPERATE BELOW 50 FT AGL, BUT HAS INCREASING SENSITIVITY UP TO THAT POINT ON DSCNT. HE FURTHER STATES THAT THE ACR REMOVED BOTH CREW MEMBERS FROM FLYING STATUS UNTIL SUCH TIME THAT SIMULATOR INSTRUCTION TO REINFORCE XWIND LNDG TECHNIQUES WAS ACCOMPLISHED.

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.