Flight crew diverted due to multiple #3 fuel tank alert messages.

Attributes
ACN	1538477
Time
Date	201804
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Widebody Transport
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Fuel System
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Critical Inflight Event / Encounter Fuel Issue

Narrative:

Received tank 3 fuel quantity low; tank 3 tip trapped; tank 3 tip fuel low; tank 3 5800 pounds unusable alerts. Due to maintenance delay after block out; 5800 pounds of unusable/trapped fuel put us below emergency fuel [at the destination]. Troubleshooting and QRH procedures only compounded the problem. We diverted uneventfully into ZZZ in order to land with enough fuel to ensure the engine did not fuel starve. Delays due to maintenance after block out at departure airport increased our taxi out burn and decreased our extra fuel at destination reducing our time to troubleshoot and make decisions.

Original NASA ASRS Text

Title: Flight crew diverted due to multiple #3 Fuel Tank alert messages.

Narrative: Received Tank 3 Fuel Quantity Low; Tank 3 Tip Trapped; Tank 3 Tip Fuel Low; Tank 3 5800 pounds Unusable alerts. Due to maintenance delay after block out; 5800 pounds of unusable/trapped fuel put us below emergency fuel [at the destination]. Troubleshooting and QRH procedures only compounded the problem. We diverted uneventfully into ZZZ in order to land with enough fuel to ensure the engine did not fuel starve. Delays due to maintenance after block out at departure airport increased our taxi out burn and decreased our extra fuel at destination reducing our time to troubleshoot and make decisions.

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.