B747-400 returned to land at hkg after #4 engine reverser light illuminated during departure.

Attributes
ACN	280005
Time
Date	199408
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : hkg
State Reference	FO
Altitude	msl bound lower : 500 msl bound upper : 500
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hkg
Operator	common carrier : air carrier
Make Model Name	B747-400
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff other
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : atp
Experience	flight time last 90 days : 300 flight time total : 20000
ASRS Report	280005
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

After takeoff, #4 engine reverser light came on and aircraft yawed to right resulting in slight deviation to right of extended runway centerline. The #4 throttle was pulled to idle at which time the reverser warning went out and corrective action taken. Appropriate normal and irregular checklists were accomplished, fuel load reduced, and an uneventful 3 engine landing made at hkg with #4 engine in forward idle.

Original NASA ASRS Text

Title: B747-400 RETURNED TO LAND AT HKG AFTER #4 ENG REVERSER LIGHT ILLUMINATED DURING DEP.

Narrative: AFTER TKOF, #4 ENG REVERSER LIGHT CAME ON AND ACFT YAWED TO R RESULTING IN SLIGHT DEV TO R OF EXTENDED RWY CTRLINE. THE #4 THROTTLE WAS PULLED TO IDLE AT WHICH TIME THE REVERSER WARNING WENT OUT AND CORRECTIVE ACTION TAKEN. APPROPRIATE NORMAL AND IRREGULAR CHKLISTS WERE ACCOMPLISHED, FUEL LOAD REDUCED, AND AN UNEVENTFUL 3 ENG LNDG MADE AT HKG WITH #4 ENG IN FORWARD IDLE.

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.