Narrative:

I was PF. On approach to runway 4R ord, I asked for flaps 15 degrees. We noticed an asymmetrical flap indication. The aircraft displayed no unusual roll motion whatsoever. I initially suggested a go around to investigate the problem but after a brief assessment of the situation and discussion, we determined the aircraft to be stable and elected to continue the approach since we suspected an indication problem. We selected the flaps to the lower setting of 15 degrees and rebugged for this flap setting. On short final, got 'too low flaps' warning and continued. Landed without incident.

Google
 

Original NASA ASRS Text

Title: A B737-300 ON APCH EXPERIENCED FLAP INDICATION FAILURE. R FLAP INDICATION 10 DEGS AND L INDICATION 15 DEGS WITH NO ROLL.

Narrative: I WAS PF. ON APCH TO RWY 4R ORD, I ASKED FOR FLAPS 15 DEGS. WE NOTICED AN ASYMMETRICAL FLAP INDICATION. THE ACFT DISPLAYED NO UNUSUAL ROLL MOTION WHATSOEVER. I INITIALLY SUGGESTED A GO AROUND TO INVESTIGATE THE PROB BUT AFTER A BRIEF ASSESSMENT OF THE SIT AND DISCUSSION, WE DETERMINED THE ACFT TO BE STABLE AND ELECTED TO CONTINUE THE APCH SINCE WE SUSPECTED AN INDICATION PROB. WE SELECTED THE FLAPS TO THE LOWER SETTING OF 15 DEGS AND REBUGGED FOR THIS FLAP SETTING. ON SHORT FINAL, GOT 'TOO LOW FLAPS' WARNING AND CONTINUED. LANDED WITHOUT INCIDENT.

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.