CRJ200 suffers flaps failure. Lands with flaps 20 vice 30.

Attributes
ACN	803450
Time
Date	200809
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet 200 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	descent : approach landing : roll
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	803450
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : cas flap fail message other flight crewa
Resolutory Action	none taken : unable
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Selected flaps 30 degrees; received flaps fail cas message. Landed at flaps 20 degrees; called maintenance. Skew computer was showing a miscompare to flap computer.

Original NASA ASRS Text

Title: CRJ200 SUFFERS FLAPS FAILURE. LANDS WITH FLAPS 20 VICE 30.

Narrative: SELECTED FLAPS 30 DEGS; RECEIVED FLAPS FAIL CAS MESSAGE. LANDED AT FLAPS 20 DEGS; CALLED MAINT. SKEW COMPUTER WAS SHOWING A MISCOMPARE TO FLAP COMPUTER.

Data retrieved from NASA's ASRS site as of May 2009 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.