Narrative:

As first officer on flight from aex to iah, we declared an emergency after a master fuel pressure light illuminated for the right engine. As per company procedures, we diverted to the nearest suitable airport, which was bpt. Upon landing, it was determined that the right fuel tank was below usable limits. The aircraft flown for the round trip, iah-aex-iah had the right fuel gauge MEL'ed inoperative. This was a significant factor. After fueling at iah, the tanks were measured by the captain and found to be in balance with the left tank with our desired fuel. Tanks were not checked at aex since no fuel was added. The obvious conclusion can only be that an error was made calculating the dipstick reading.

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Original NASA ASRS Text

Title: ACR LTT ENRTE AEX-IAH GOT MASTER FUEL PRESSURE LIGHT FOR R ENG. DIVERTED TO NEAREST ARPT, BPT. FOUND R FUEL TANK BELOW USABLE LIMITS. ACFT HAD BEEN RELEASED WITH R FUEL GAUGE INOP. ON FUELING HAD MEASURED THE TANKS IN ACCORDANCE WITH SOP.

Narrative: AS FO ON FLT FROM AEX TO IAH, WE DECLARED AN EMER AFTER A MASTER FUEL PRESSURE LIGHT ILLUMINATED FOR THE R ENG. AS PER COMPANY PROCS, WE DIVERTED TO THE NEAREST SUITABLE ARPT, WHICH WAS BPT. UPON LNDG, IT WAS DETERMINED THAT THE R FUEL TANK WAS BELOW USABLE LIMITS. THE ACFT FLOWN FOR THE ROUND TRIP, IAH-AEX-IAH HAD THE R FUEL GAUGE MEL'ED INOP. THIS WAS A SIGNIFICANT FACTOR. AFTER FUELING AT IAH, THE TANKS WERE MEASURED BY THE CAPT AND FOUND TO BE IN BAL WITH THE L TANK WITH OUR DESIRED FUEL. TANKS WERE NOT CHKED AT AEX SINCE NO FUEL WAS ADDED. THE OBVIOUS CONCLUSION CAN ONLY BE THAT AN ERROR WAS MADE CALCULATING THE DIPSTICK READING.

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.