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Captain of a DC10 noticed after flight that he landed with a fuel imbal due to the so not xferring all the fuel out of an auxiliary tank prior to landing.
| Attributes | |
| ACN | 429485 |
| Time | |
| Date | 199902 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : rjoo.airport |
| State Reference | FO |
| Altitude | msl single value : 37000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 12000 flight time type : 340 |
| ASRS Report | 429485 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : instrument pilot : commercial pilot : flight engineer |
| Events | |
| Anomaly | non adherence other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Upon initial descent into osaka, japan, so advised that we still had 4000 pounds of fuel in our auxiliary fuel tank. (The tank should have been empty.) after a brief discussion, he began to xfer fuel as required. Upon landing, we still had 2900 pounds of fuel remaining in that tank. The fuel burn schedule requires this tank to be empty. Fuel on arrival was within limitations, but we arrived with a nonstandard fuel balance. As the captain, I should have caught this. I routinely watch the fuel closely. After this incident I realized that I did not have the auxiliary tank as part of my scan. I do now! I discussed this at length with the so and our conclusion was that he had a slight misunderstanding of the system. With 2 types of DC10's, several fuel tank configns and some aircraft auxiliary tanks inactive, a simple system can be confusing. This system is now fully understood and my scanning techniques are improved. This will never happen to me again!
Original NASA ASRS Text
Title: CAPT OF A DC10 NOTICED AFTER FLT THAT HE LANDED WITH A FUEL IMBAL DUE TO THE SO NOT XFERRING ALL THE FUEL OUT OF AN AUX TANK PRIOR TO LNDG.
Narrative: UPON INITIAL DSCNT INTO OSAKA, JAPAN, SO ADVISED THAT WE STILL HAD 4000 LBS OF FUEL IN OUR AUX FUEL TANK. (THE TANK SHOULD HAVE BEEN EMPTY.) AFTER A BRIEF DISCUSSION, HE BEGAN TO XFER FUEL AS REQUIRED. UPON LNDG, WE STILL HAD 2900 LBS OF FUEL REMAINING IN THAT TANK. THE FUEL BURN SCHEDULE REQUIRES THIS TANK TO BE EMPTY. FUEL ON ARR WAS WITHIN LIMITATIONS, BUT WE ARRIVED WITH A NONSTANDARD FUEL BAL. AS THE CAPT, I SHOULD HAVE CAUGHT THIS. I ROUTINELY WATCH THE FUEL CLOSELY. AFTER THIS INCIDENT I REALIZED THAT I DID NOT HAVE THE AUX TANK AS PART OF MY SCAN. I DO NOW! I DISCUSSED THIS AT LENGTH WITH THE SO AND OUR CONCLUSION WAS THAT HE HAD A SLIGHT MISUNDERSTANDING OF THE SYS. WITH 2 TYPES OF DC10'S, SEVERAL FUEL TANK CONFIGNS AND SOME ACFT AUX TANKS INACTIVE, A SIMPLE SYS CAN BE CONFUSING. THIS SYS IS NOW FULLY UNDERSTOOD AND MY SCANNING TECHNIQUES ARE IMPROVED. THIS WILL NEVER HAPPEN TO ME AGAIN!
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.