Air carrier dispatcher reported an aircraft was over burning fuel and required priority handling on ...

Narrative:

I inherited the flight with approximately 2 hours flight time remaining. The dispatcher I relieved advised that the flight was overburning fuel by approximately 3000-4000 lbs. At the time of re-dispatch; they were legal to continue with original alternate of ZZZZ1; but they had very little extra fuel to work with. About 45 minutes prior to landing; the flight was advised by ATC of potential holding for ZZZZ; and the crew discussed diverting. I advised to go ahead and divert to ZZZZ2 at the point they were told to hold; due to their present location northeast of the field and that ZZZZ2 has customs and favorable ground handling. The flight then elected to divert to ZZZZ2. While I was in the middle of notifying managers of the situation and preparing a diversion flight plan; the crew discovered they did not have sufficient fuel to reach ZZZZ2 and instead declared ZZZZ as their destination and declared a pan pan pan with ATC. The flight was cleared in and landed with about 8600 lbs of fuel (approximately 50 minutes).

Original NASA ASRS Text

Title: Air carrier Dispatcher reported an aircraft was over burning fuel and required priority handling on arrival.

Narrative: I inherited the flight with approximately 2 hours flight time remaining. The dispatcher I relieved advised that the flight was overburning fuel by approximately 3000-4000 lbs. At the time of re-dispatch; they were legal to continue with original alternate of ZZZZ1; but they had very little extra fuel to work with. About 45 minutes prior to landing; the flight was advised by ATC of potential holding for ZZZZ; and the crew discussed diverting. I advised to go ahead and divert to ZZZZ2 at the point they were told to hold; due to their present location NE of the field and that ZZZZ2 has customs and favorable ground handling. The flight then elected to divert to ZZZZ2. While I was in the middle of notifying managers of the situation and preparing a diversion flight plan; the crew discovered they did not have sufficient fuel to reach ZZZZ2 and instead declared ZZZZ as their destination and declared a PAN PAN PAN with ATC. The flight was cleared in and landed with about 8600 lbs of fuel (approximately 50 minutes).

Data retrieved from NASA's ASRS site 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	1617280
Time
Date	201901
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Dispatcher
Qualification	Dispatch Dispatcher
Events
Anomaly	Inflight Event / Encounter Fuel Issue

Air carrier dispatcher reported an aircraft was over burning fuel and required priority handling on arrival.