CL65 crew was unable to extend the flaps, and was required to make a no flaps landing.

Attributes
ACN	413460
Time
Date	199809
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cvg
State Reference	OH
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cvg
Operator	common carrier : air carrier
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach other
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 170 flight time total : 4800 flight time type : 2100
ASRS Report	413460
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : anomaly accepted none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Flap fail caution message during vectored approach for cvg. Briefed dispatch, flight attendant, passenger. Landed on runway 18R cvg with 0 degrees flaps. Callback conversation with reporter revealed the following information: captain got an amber EICAS message 'flap fail' when he selected flaps 8 degrees. The crew then followed the flaps fail abnormal checklist, but were unable to get flap extension. This required the crew to add 30 KTS to vref speed, and gave a touchdown speed of 172 KTS. Even though they had an 11000 ft runway for use, they had overheated, smoking brakes. There are times when the luxury of an 11000 ft runway is unavailable. The captain stated he did not know what happened to the flap system. He did overhear a mechanic say that the flap drive system was 'all torn up.' the captain said he knows of at least 5 other flap failures in the CL65 aircraft at his air carrier.

Original NASA ASRS Text

Title: CL65 CREW WAS UNABLE TO EXTEND THE FLAPS, AND WAS REQUIRED TO MAKE A NO FLAPS LNDG.

Narrative: FLAP FAIL CAUTION MESSAGE DURING VECTORED APCH FOR CVG. BRIEFED DISPATCH, FLT ATTENDANT, PAX. LANDED ON RWY 18R CVG WITH 0 DEGS FLAPS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: CAPT GOT AN AMBER EICAS MESSAGE 'FLAP FAIL' WHEN HE SELECTED FLAPS 8 DEGS. THE CREW THEN FOLLOWED THE FLAPS FAIL ABNORMAL CHKLIST, BUT WERE UNABLE TO GET FLAP EXTENSION. THIS REQUIRED THE CREW TO ADD 30 KTS TO VREF SPD, AND GAVE A TOUCHDOWN SPD OF 172 KTS. EVEN THOUGH THEY HAD AN 11000 FT RWY FOR USE, THEY HAD OVERHEATED, SMOKING BRAKES. THERE ARE TIMES WHEN THE LUXURY OF AN 11000 FT RWY IS UNAVAILABLE. THE CAPT STATED HE DID NOT KNOW WHAT HAPPENED TO THE FLAP SYS. HE DID OVERHEAR A MECH SAY THAT THE FLAP DRIVE SYS WAS 'ALL TORN UP.' THE CAPT SAID HE KNOWS OF AT LEAST 5 OTHER FLAP FAILURES IN THE CL65 ACFT AT HIS ACR.

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.