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DC9 operated with a fuel imbal due to a fuel gauge malfunction and the first officer not understanding how to do a fuel balance reasonableness check.
| Attributes | |
| ACN | 461130 |
| Time | |
| Date | 200001 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude cruise : level |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : instrument pilot : multi engine pilot : cfi pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 137 flight time total : 9312 flight time type : 3325 |
| ASRS Report | 461130 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : fuel gauge other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
Fuel gauge malfunction. Relatively inexperienced first officer's fuel reasonableness check, and the captain not checking his work closely enough did not identify the fuel gauge malfunction. The gauge malfunction caused us to fly with a fuel imbal. Captain and first officer thoroughly discussed reasonableness check and both completely understand the procedure. Situation should not recur to either crew member.
Original NASA ASRS Text
Title: DC9 OPERATED WITH A FUEL IMBAL DUE TO A FUEL GAUGE MALFUNCTION AND THE FO NOT UNDERSTANDING HOW TO DO A FUEL BAL REASONABLENESS CHK.
Narrative: FUEL GAUGE MALFUNCTION. RELATIVELY INEXPERIENCED FO'S FUEL REASONABLENESS CHK, AND THE CAPT NOT CHKING HIS WORK CLOSELY ENOUGH DID NOT IDENT THE FUEL GAUGE MALFUNCTION. THE GAUGE MALFUNCTION CAUSED US TO FLY WITH A FUEL IMBAL. CAPT AND FO THOROUGHLY DISCUSSED REASONABLENESS CHK AND BOTH COMPLETELY UNDERSTAND THE PROC. SIT SHOULD NOT RECUR TO EITHER CREW MEMBER.
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.