B737-300 crew had asymmetric flap lockout on final at ord.

Attributes
ACN	551350
Time
Date	200206
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl single value : 3000
Environment
Weather Elements	other
Aircraft 1
Controlling Facilities	tower : ord.tower
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach landing : go around
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 2990
ASRS Report	551350
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
ASRS Report	551351
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : flap indicator other flight crewa other flight crewb
Resolutory Action	flight crew : executed missed approach other
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

On approach, when selecting flaps from 5 degrees to 15 degrees flaps, position indicator split and flaps locked in position. Executed go around and consulted flight handbook for procedure to follow with flaps partially extended. Did not try to retract, but procedure said to put flaps in position of least flap, so moved handle to 5 degrees flap position. No flap movement. Set speed for landing as directed by procedure and returned for landing. Advised dispatch and flight attendants of condition and advised passenger what was happening. Landing was uneventful.

Original NASA ASRS Text

Title: B737-300 CREW HAD ASYMMETRIC FLAP LOCKOUT ON FINAL AT ORD.

Narrative: ON APCH, WHEN SELECTING FLAPS FROM 5 DEGS TO 15 DEGS FLAPS, POS INDICATOR SPLIT AND FLAPS LOCKED IN POS. EXECUTED GAR AND CONSULTED FLT HANDBOOK FOR PROC TO FOLLOW WITH FLAPS PARTIALLY EXTENDED. DID NOT TRY TO RETRACT, BUT PROC SAID TO PUT FLAPS IN POS OF LEAST FLAP, SO MOVED HANDLE TO 5 DEGS FLAP POS. NO FLAP MOVEMENT. SET SPD FOR LNDG AS DIRECTED BY PROC AND RETURNED FOR LNDG. ADVISED DISPATCH AND FLT ATTENDANTS OF CONDITION AND ADVISED PAX WHAT WAS HAPPENING. LNDG WAS UNEVENTFUL.

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.