B767 has an alleged engine spool down on very short final followed by a normal landing.

Attributes
ACN	648100
Time
Date	200502
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 1200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	B767-200
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 25r
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	648100
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	647507
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : overcame equipment problem
Consequence	other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

I flew a visual approach connected to the autoplt and ILS to runway 25R at lax. I clicked off the autoplt at 1200 ft MSL and left the autothrottles connected. The approach was very stable. At approximately 250 ft MSL; the airplane suddenly yawed to the left. Captain immediately stated 'engine rollback.' I immediately put in corrective rudder and performed a normal and smooth landing. My hands had been on the throttles the entire time and only slight movement of the throttles had occurred. They both were kept aligned. I discovered after landing that upon failure of the engine; captain had immediately cycled the fuel control lever which apparently restored the left engine. It operated normally on the ground. Supplemental information from acn 647507: captain says left engine spooling down; then puts left fuel control selector to cutoff and run. The engine then spools up; landing normal. Callback conversation with reporter acn 648100 revealed the following information: maintenance found from the data recorder that the engine did not lose RPM until the fuel lever was moved to cutoff. Other findings indicated that the lever detent was worn.

Original NASA ASRS Text

Title: B767 HAS AN ALLEGED ENG SPOOL DOWN ON VERY SHORT FINAL FOLLOWED BY A NORMAL LNDG.

Narrative: I FLEW A VISUAL APCH CONNECTED TO THE AUTOPLT AND ILS TO RWY 25R AT LAX. I CLICKED OFF THE AUTOPLT AT 1200 FT MSL AND LEFT THE AUTOTHROTTLES CONNECTED. THE APCH WAS VERY STABLE. AT APPROX 250 FT MSL; THE AIRPLANE SUDDENLY YAWED TO THE L. CAPT IMMEDIATELY STATED 'ENG ROLLBACK.' I IMMEDIATELY PUT IN CORRECTIVE RUDDER AND PERFORMED A NORMAL AND SMOOTH LNDG. MY HANDS HAD BEEN ON THE THROTTLES THE ENTIRE TIME AND ONLY SLIGHT MOVEMENT OF THE THROTTLES HAD OCCURRED. THEY BOTH WERE KEPT ALIGNED. I DISCOVERED AFTER LNDG THAT UPON FAILURE OF THE ENG; CAPT HAD IMMEDIATELY CYCLED THE FUEL CTL LEVER WHICH APPARENTLY RESTORED THE L ENG. IT OPERATED NORMALLY ON THE GND. SUPPLEMENTAL INFO FROM ACN 647507: CAPT SAYS L ENG SPOOLING DOWN; THEN PUTS L FUEL CTL SELECTOR TO CUTOFF AND RUN. THE ENG THEN SPOOLS UP; LNDG NORMAL. CALLBACK CONVERSATION WITH RPTR ACN 648100 REVEALED THE FOLLOWING INFO: MAINT FOUND FROM THE DATA RECORDER THAT THE ENG DID NOT LOSE RPM UNTIL THE FUEL LEVER WAS MOVED TO CUTOFF. OTHER FINDINGS INDICATED THAT THE LEVER DETENT WAS WORN.

Data retrieved from NASA's ASRS site as of January 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.