SF340 flight crew reports departing with 2;800 pounds of fuel on board then discovering during prefl...

Narrative:

Our planned fuel on board was 2;800 pounds. When I was filling out the weight and balance form; I looked at the fuel gauges and saw 2;800 pounds. When the captain and I ran the before start checklist we stated '2;800 pounds on board;' because that is what we saw. We safely completed the flight. During my preflight for the return flight; I noted the fuel on board to be 3;400 pounds. I looked at the release and saw our planned fuel on board to be 2;200 pounds. I informed the captain that we had been over fueled. We called the fueler and they informed us they had not fueled us. At this point; we began to question the integrity of the fuel quantity gauges. The questioning arose because aircraft had MEL's for the fuel flow gauges and the fuel used indicator (fuel totalizer). The MEL numbers are 73-32-1 and 73-32-2. The captain called dispatch to make them aware of what was going on and was then transferred to maintenance control. The captain explained the situation to maintenance control and expressed that he and I felt the fuel quantity gauges were malfunctioning. Maintenance control had contract maintenance come out to test the fuel quantity gauges. Contract maintenance preformed the tests and left. At this point; maintenance control became concerned we landed overweight or exceeded structural limitations and that an overweight inspection would need to be completed. We assured them we had not landed overweight or exceeded any structural limitations. We know we didn't land overweight or exceed any structural limitations; because maintenance had us complete a new weight and balance form using the fuel quantity the gauges currently read plus our fuel burn from the release and the original load manifest. The fuel quantity the gauges currently read was 3;400 pounds; and our burn from the release was 502 pounds plus 100 pounds for taxi for a total of 4;002 pounds. This weight and balance calculation satisfied maintenance control; and they agreed they did not need to send a 'road crew' to perform an overweight landing inspection. Maintenance control then felt contract maintenance needed to come back over to sign off the aircraft logbook with the appropriate corrective action.

Original NASA ASRS Text

Title: SF340 flight crew reports departing with 2;800 LBS of fuel on board then discovering during preflight for the next leg that is the gauges indicated 3;400 LBS of fuel on board; although none was added.

Narrative: Our planned fuel on board was 2;800 LBS. When I was filling out the weight and balance form; I looked at the fuel gauges and saw 2;800 LBS. When the Captain and I ran the Before Start Checklist we stated '2;800 LBS on board;' because that is what we saw. We safely completed the flight. During my preflight for the return flight; I noted the fuel on board to be 3;400 LBS. I looked at the release and saw our planned fuel on board to be 2;200 LBS. I informed the Captain that we had been over fueled. We called the fueler and they informed us they had not fueled us. At this point; we began to question the integrity of the fuel quantity gauges. The questioning arose because aircraft had MEL's for the fuel flow gauges and the fuel used indicator (fuel totalizer). The MEL numbers are 73-32-1 and 73-32-2. The Captain called Dispatch to make them aware of what was going on and was then transferred to Maintenance Control. The Captain explained the situation to Maintenance Control and expressed that he and I felt the fuel quantity gauges were malfunctioning. Maintenance Control had Contract Maintenance come out to test the fuel quantity gauges. Contract Maintenance preformed the tests and left. At this point; Maintenance Control became concerned we landed overweight or exceeded structural limitations and that an overweight inspection would need to be completed. We assured them we had not landed overweight or exceeded any structural limitations. We know we didn't land overweight or exceed any structural limitations; because Maintenance had us complete a new weight and balance form using the fuel quantity the gauges currently read plus our fuel burn from the release and the original load manifest. The fuel quantity the gauges currently read was 3;400 LBS; and our burn from the release was 502 LBS plus 100 LBS for taxi for a total of 4;002 LBS. This weight and balance calculation satisfied Maintenance Control; and they agreed they did not need to send a 'road crew' to perform an overweight landing inspection. Maintenance Control then felt Contract Maintenance needed to come back over to sign off the aircraft logbook with the appropriate corrective action.

Data retrieved from NASA's ASRS site as of July 2013 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	999449
Time
Date	201203
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Fuel Quantity-Pressure Indication
Person 1
Function	First Officer Pilot Not Flying
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance

SF340 flight crew reports departing with 2;800 pounds of fuel on board then discovering during preflight for the next leg that is the gauges indicated 3;400 pounds of fuel on board; although none was added.