A B737-300 crew had the trailing edge flaps lock at flaps 10 degrees on approach at ord.

Attributes
ACN	553107
Time
Date	200207
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl single value : 1000
Aircraft 1
Controlling Facilities	tower : ord.tower
Operator	common carrier : air carrier
Make Model Name	A300
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	553107
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : asymetric flap shutoff, flap indicator other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

On final runway 9R at ord, flaps stuck about 10-12 degrees. Slats were all extended. We noticed them sticking around 1000 ft and elected to land at the flaps 10 degree airspeed with a 10000 ft runway in front of us. Landing was uneventful. However, on touchdown, the flaps proceeded to extend to 30 degrees. I made an entry in the logbook and briefed maintenance on the problem. Callback conversation with reporter revealed the following information: crew had noticed a slight flap asymmetry on the flap extension. Crew thinks the flap asymmetry protection activated and stopped further flap operation. The crew did not accomplish any abnormal flap checklists. The flap handle was at flaps 30 degrees for landing. The crew never followed up on what maintenance found.

Original NASA ASRS Text

Title: A B737-300 CREW HAD THE TRAILING EDGE FLAPS LOCK AT FLAPS 10 DEGS ON APCH AT ORD.

Narrative: ON FINAL RWY 9R AT ORD, FLAPS STUCK ABOUT 10-12 DEGS. SLATS WERE ALL EXTENDED. WE NOTICED THEM STICKING AROUND 1000 FT AND ELECTED TO LAND AT THE FLAPS 10 DEG AIRSPD WITH A 10000 FT RWY IN FRONT OF US. LNDG WAS UNEVENTFUL. HOWEVER, ON TOUCHDOWN, THE FLAPS PROCEEDED TO EXTEND TO 30 DEGS. I MADE AN ENTRY IN THE LOGBOOK AND BRIEFED MAINT ON THE PROB. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING INFO: CREW HAD NOTICED A SLIGHT FLAP ASYMMETRY ON THE FLAP EXTENSION. CREW THINKS THE FLAP ASYMMETRY PROTECTION ACTIVATED AND STOPPED FURTHER FLAP OP. THE CREW DID NOT ACCOMPLISH ANY ABNORMAL FLAP CHKLISTS. THE FLAP HANDLE WAS AT FLAPS 30 DEGS FOR LNDG. THE CREW NEVER FOLLOWED UP ON WHAT MAINT FOUND.

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.