A B767-300's EICAS alerted le flap asym and the leading edge light illuminated. A go-around was exec...

Narrative:

I; the captain; was flying the aircraft. This was the third and final leg with the same aircraft and crew. On approach to localizer runway xxl. When selecting flaps from 1 to 5; EICAS message 'le flap asym' and 'leading edge' light illuminated. Broke off the approach; requested vectors to a holding fix to accomplish the QRH checklist. Maintained configuration and speed of flaps 5 and 187 KTS. Initially climbed to 3500 ft MSL and climbed to 4000 ft MSL to hold on the ILS runway yy. Accomplished the QRH 'le slat asym' checklist. Configuration was 20 flaps extended by altn te flaps with vref 30 to 30 (157 KTS). Declared an emergency at about XA30Z since there was a mechanical failure of the flap/slat system. Received vectors to ILS runway yy and landed at vref to 157 KTS. Fire rescue did not observe anything unusual and I taxied to the gate; leaving the flap configuration per maintenance request. This was repeat item of only two days prior.

Original NASA ASRS Text

Title: A B767-300's EICAS alerted LE FLAP ASYM and the LEADING EDGE light illuminated. A go-around was executed followed by the completion of the QRH procedure. An emergency was declared.

Narrative: I; the Captain; was flying the aircraft. This was the third and final leg with the same aircraft and crew. On approach to LOC Runway XXL. When selecting flaps from 1 to 5; EICAS Message 'LE FLAP ASYM' and 'LEADING EDGE' light illuminated. Broke off the approach; requested vectors to a holding fix to accomplish the QRH checklist. Maintained configuration and speed of Flaps 5 and 187 KTS. Initially climbed to 3500 FT MSL and climbed to 4000 FT MSL to hold on the ILS Runway YY. Accomplished the QRH 'LE SLAT ASYM' checklist. Configuration was 20 flaps extended by ALTN TE FLAPS with Vref 30 to 30 (157 KTS). Declared an emergency at about XA30Z since there was a mechanical failure of the flap/slat system. Received vectors to ILS Runway YY and landed at Vref to 157 KTS. Fire Rescue did not observe anything unusual and I taxied to the gate; leaving the flap configuration per maintenance request. This was repeat item of only two days prior.

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	851374
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	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Component
Aircraft Component	Flap/Slat Control System
Person 1
Function	Captain Pilot Flying
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Maintenance

A B767-300's EICAS alerted le flap asym and the leading edge light illuminated. A go-around was executed followed by the completion of the QRH procedure. An emergency was declared.