A crj-200 experienced a failure of the flap/slat control mechanism on final approach. The flight cre...

Narrative:

I was the pilot flying on final approach. The aircraft was configured at flaps 20 with gear up. Soon after passing the FAF; with the aircraft stable at 170 knots and auto pilot engaged; I called for gear down; flaps 30; and before landing checklist. The captain extended the gear; then selected flaps 30. Upon flaps 30 selection; the yellow 'flaps fail' caution message appeared. The flaps indicated 20 degrees. I initiated a smooth and gradual go around; and tower was notified of our intentions. Tower assigned heading and altitude. I retained pilot flying duties and accepted control of the radio while the captain performed the QRH checklist. The checklist did not correct the flaps failure. We discussed the problem and notified ATC of our problem and declared an emergency. Approach was stable by 1000 ft; with a vref of 165 knots. Day VMC with a crosswind of 15 knots existed. The aircraft landed smoothly and was slowed without excessive braking despite one thrust reverser inoperative per MEL. We taxied to the gate with no further problems or concerns.

Original NASA ASRS Text

Title: A CRJ-200 experienced a failure of the flap/slat control mechanism on final approach. The flight crew initiated a go around; declared an emergency and landed without incident.

Narrative: I was the pilot flying on final approach. The aircraft was configured at Flaps 20 with gear up. Soon after passing the FAF; with the aircraft stable at 170 knots and auto pilot engaged; I called for Gear Down; Flaps 30; and Before Landing Checklist. The Captain extended the gear; then selected Flaps 30. Upon Flaps 30 selection; the yellow 'Flaps Fail' caution message appeared. The flaps indicated 20 degrees. I initiated a smooth and gradual go around; and Tower was notified of our intentions. Tower assigned heading and altitude. I retained pilot flying duties and accepted control of the radio while the Captain performed the QRH checklist. The checklist did not correct the flaps failure. We discussed the problem and notified ATC of our problem and declared an emergency. Approach was stable by 1000 ft; with a Vref of 165 knots. Day VMC with a crosswind of 15 knots existed. The aircraft landed smoothly and was slowed without excessive braking despite one thrust reverser INOP per MEL. We taxied to the gate with no further problems or concerns.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	853566
Time
Date	200909
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Flap Control (Trailing & Leading Edge)
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Commercial
Events
Anomaly	Aircraft Equipment Problem Critical

A crj-200 experienced a failure of the flap/slat control mechanism on final approach. The flight crew initiated a go around; declared an emergency and landed without incident.