Fuel quantity indication problem at cruise in foreign airspace. B-747 return land.

Attributes
ACN	280848
Time
Date	199408
Day	Thu
Place
Locale Reference	atc facility : rjtg
State Reference	FO
Altitude	msl bound lower : 33000 msl bound upper : 33000
Aircraft 1
Controlling Facilities	artcc : rjtg tower : dfw
Operator	common carrier : air carrier
Make Model Name	B747-C/F
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other landing other other
Route In Use	enroute : pacific
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 150 flight time total : 13300 flight time type : 5900
ASRS Report	280848
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	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

#1 main fuel tank gauge dropped to about 7000 pounds, should have been about 11000 pounds. We returned to departure station (nrt). #1 main fuel tank gauge was found to be inoperative.

Original NASA ASRS Text

Title: FUEL QUANTITY INDICATION PROB AT CRUISE IN FOREIGN AIRSPACE. B-747 RETURN LAND.

Narrative: #1 MAIN FUEL TANK GAUGE DROPPED TO ABOUT 7000 LBS, SHOULD HAVE BEEN ABOUT 11000 LBS. WE RETURNED TO DEP STATION (NRT). #1 MAIN FUEL TANK GAUGE WAS FOUND TO BE INOP.

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.