CL65 crew had hard landing at dfw.

Attributes
ACN	486730
Time
Date	200009
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dfw.tower
Operator	common carrier : air carrier
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : cfi pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 750 flight time type : 100
ASRS Report	486730
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure non adherence : company policies other anomaly other anomaly other anomaly other
Independent Detector	other flight crewa other flight crewb other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Company
Primary Problem	Company

Narrative:

This occurrence was on a normal scheduled flight from ama to dfw aboard a CL65. The airplane was very light weight. We were only carrying 5 passenger out of 50 that fit into the aircraft. As we were arriving at dfw, everything was normal. There was a little bit of turbulence, but it wasn't a factor. We were cleared to land runway 35C at dfw international airport. The approach to landing was normal, maintaining vref speed, but a little below the GS. This wasn't a big deal since we were visual. At 100 ft AGL we are trained to bring the power back to flare and land. That day, however., I waited just a little longer because I wasn't quite over the runway yet. This resulted in an unusual ground effect, where the aircraft floated longer than usual. I felt the aircraft getting out of ground effect trying to fly, so I added power (as the captain was advising me to do just that). Next thing I know, the airplane is hitting the ground really hard. The passenger are ok. Our flight attendant had some muscle pains. I learned that the airplane tends to float more as it is lighter, and now I know what to expect and how to correct accordingly.

Original NASA ASRS Text

Title: CL65 CREW HAD HARD LNDG AT DFW.

Narrative: THIS OCCURRENCE WAS ON A NORMAL SCHEDULED FLT FROM AMA TO DFW ABOARD A CL65. THE AIRPLANE WAS VERY LIGHT WT. WE WERE ONLY CARRYING 5 PAX OUT OF 50 THAT FIT INTO THE ACFT. AS WE WERE ARRIVING AT DFW, EVERYTHING WAS NORMAL. THERE WAS A LITTLE BIT OF TURB, BUT IT WASN'T A FACTOR. WE WERE CLRED TO LAND RWY 35C AT DFW INTL ARPT. THE APCH TO LNDG WAS NORMAL, MAINTAINING VREF SPD, BUT A LITTLE BELOW THE GS. THIS WASN'T A BIG DEAL SINCE WE WERE VISUAL. AT 100 FT AGL WE ARE TRAINED TO BRING THE PWR BACK TO FLARE AND LAND. THAT DAY, HOWEVER., I WAITED JUST A LITTLE LONGER BECAUSE I WASN'T QUITE OVER THE RWY YET. THIS RESULTED IN AN UNUSUAL GND EFFECT, WHERE THE ACFT FLOATED LONGER THAN USUAL. I FELT THE ACFT GETTING OUT OF GND EFFECT TRYING TO FLY, SO I ADDED PWR (AS THE CAPT WAS ADVISING ME TO DO JUST THAT). NEXT THING I KNOW, THE AIRPLANE IS HITTING THE GND REALLY HARD. THE PAX ARE OK. OUR FLT ATTENDANT HAD SOME MUSCLE PAINS. I LEARNED THAT THE AIRPLANE TENDS TO FLOAT MORE AS IT IS LIGHTER, AND NOW I KNOW WHAT TO EXPECT AND HOW TO CORRECT ACCORDINGLY.

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.