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An airbus 330 required a brightness check of cockpit display units with a special instrument lacking a calibration chart and no technician training.
| Attributes | |
| ACN | 552247 |
| Time | |
| Date | 200206 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A330 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : repairman technician : powerplant |
| ASRS Report | 552247 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | other other : person 1 |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Factors | |
| Maintenance | contributing factor : manuals performance deficiency : training performance deficiency : unqualified personnel |
| Supplementary | |
| Problem Areas | Company Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Company |
Narrative:
Job card 2602 issued by planning. Dropped dead in 4 hours. Calls for brightness measurement of display units using a luminance meter, ls-100, tool #T650001. Having never performed this task, it took a while to read, retrieve tool, and understand what was what. Neither myself nor anyone in the shop have had training on tool #T650001. Having been issued job card and reading, there wasn't a figure 1. Had to call maintenance control and have figure 1 faxed. Figure 1 gives values acceptable. After reading and trying to understand what was required, it was determined that tool T650001 was unacceptable. The luminance meter as to have a correction factor with unit to make calculation. Informed maintenance control that meter couldn't be used without correction factor. Maintenance control tried to defer check, but planning would not defer. Had to have tool #T650001 flown in from ZZZ. This tool had the correction factor listed with tool. Performed job card per job card, but till paper is confusing and by not having been trained on test equipment, it took time to evaluate the analysis required. All units checked within tolerance that I determined to be accurate. Air carrier X needs to provide more training on test equipment and procedures.
Original NASA ASRS Text
Title: AN AIRBUS 330 REQUIRED A BRIGHTNESS CHK OF COCKPIT DISPLAY UNITS WITH A SPECIAL INST LACKING A CALIBRATION CHART AND NO TECHNICIAN TRAINING.
Narrative: JOB CARD 2602 ISSUED BY PLANNING. DROPPED DEAD IN 4 HRS. CALLS FOR BRIGHTNESS MEASUREMENT OF DISPLAY UNITS USING A LUMINANCE METER, LS-100, TOOL #T650001. HAVING NEVER PERFORMED THIS TASK, IT TOOK A WHILE TO READ, RETRIEVE TOOL, AND UNDERSTAND WHAT WAS WHAT. NEITHER MYSELF NOR ANYONE IN THE SHOP HAVE HAD TRAINING ON TOOL #T650001. HAVING BEEN ISSUED JOB CARD AND READING, THERE WASN'T A FIGURE 1. HAD TO CALL MAINT CTL AND HAVE FIGURE 1 FAXED. FIGURE 1 GIVES VALUES ACCEPTABLE. AFTER READING AND TRYING TO UNDERSTAND WHAT WAS REQUIRED, IT WAS DETERMINED THAT TOOL T650001 WAS UNACCEPTABLE. THE LUMINANCE METER AS TO HAVE A CORRECTION FACTOR WITH UNIT TO MAKE CALCULATION. INFORMED MAINT CTL THAT METER COULDN'T BE USED WITHOUT CORRECTION FACTOR. MAINT CTL TRIED TO DEFER CHK, BUT PLANNING WOULD NOT DEFER. HAD TO HAVE TOOL #T650001 FLOWN IN FROM ZZZ. THIS TOOL HAD THE CORRECTION FACTOR LISTED WITH TOOL. PERFORMED JOB CARD PER JOB CARD, BUT TILL PAPER IS CONFUSING AND BY NOT HAVING BEEN TRAINED ON TEST EQUIP, IT TOOK TIME TO EVALUATE THE ANALYSIS REQUIRED. ALL UNITS CHKED WITHIN TOLERANCE THAT I DETERMINED TO BE ACCURATE. ACR X NEEDS TO PROVIDE MORE TRAINING ON TEST EQUIP AND PROCS.
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.