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SF340 after departure was advised they were 400 pounds over gross. Checking manifest discovered addition error. Elected to fly longer routing to be sure were below landing weight limit.
| Attributes | |
| ACN | 362801 |
| Time | |
| Date | 199703 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 4200 flight time type : 1520 |
| ASRS Report | 362801 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 9500 flight time type : 4000 |
| ASRS Report | 362400 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : anomaly accepted other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Shortly after departure we were notified by our operations that we had a weight problem. I quickly realized I had made an addition error and we departed 400 pounds over maximum takeoff weight. On the saab there are 2 zones for cargo -- C1 and C2. We had received cargo weights and I recorded them in their respective zones properly. Then additional passenger and cargo arrived. The rampers informed us to add 4 bags to C1. I multiplied 4 times 23.5 (bag weight) and added that to C1. At this point I was distraction by another task -- starting the #1 engine. I returned to my calculator and recorded that number onto the load manifest. I missed adding the C2 cargo which was 400 pounds. In my mind I had added 2 numbers for the cargo weight. I informed the captain of my error and calculated what the trip's fuel burn needed to be to land under maximum landing weight. We took a longer routing to insure we met the required fuel burn.
Original NASA ASRS Text
Title: SF340 AFTER DEP WAS ADVISED THEY WERE 400 LBS OVER GROSS. CHKING MANIFEST DISCOVERED ADDITION ERROR. ELECTED TO FLY LONGER ROUTING TO BE SURE WERE BELOW LNDG WT LIMIT.
Narrative: SHORTLY AFTER DEP WE WERE NOTIFIED BY OUR OPS THAT WE HAD A WT PROB. I QUICKLY REALIZED I HAD MADE AN ADDITION ERROR AND WE DEPARTED 400 LBS OVER MAX TKOF WT. ON THE SAAB THERE ARE 2 ZONES FOR CARGO -- C1 AND C2. WE HAD RECEIVED CARGO WTS AND I RECORDED THEM IN THEIR RESPECTIVE ZONES PROPERLY. THEN ADDITIONAL PAX AND CARGO ARRIVED. THE RAMPERS INFORMED US TO ADD 4 BAGS TO C1. I MULTIPLIED 4 TIMES 23.5 (BAG WT) AND ADDED THAT TO C1. AT THIS POINT I WAS DISTR BY ANOTHER TASK -- STARTING THE #1 ENG. I RETURNED TO MY CALCULATOR AND RECORDED THAT NUMBER ONTO THE LOAD MANIFEST. I MISSED ADDING THE C2 CARGO WHICH WAS 400 LBS. IN MY MIND I HAD ADDED 2 NUMBERS FOR THE CARGO WT. I INFORMED THE CAPT OF MY ERROR AND CALCULATED WHAT THE TRIP'S FUEL BURN NEEDED TO BE TO LAND UNDER MAX LNDG WT. WE TOOK A LONGER ROUTING TO INSURE WE MET THE REQUIRED FUEL BURN.
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.