 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An airbus 320 left engine fire warning loop wiring was reconfigured and operated without engineering approval or documentation.
| Attributes | |
| ACN | 591506 |
| Time | |
| Date | 200308 |
| Day | Wed |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : pit.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : airframe technician : fcc technician : powerplant |
| Experience | maintenance avionics : 10 maintenance lead technician : 5 maintenance technician : 10 |
| ASRS Report | 591506 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper documentation non adherence : far non adherence : published procedure non adherence : company policies |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : repair performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | Warning Diagram Manual |
Narrative:
Aircraft #1 engine fire loop B fault had long history. On aug/wed/03, aircraft remained overnight at ZZZ. Field technician maintenance controller came to direct troubleshooting. Procedures outlined in airbus sil 26-029, page 9L. Core zone pins were swapped, system tested good. MEL removed and aircraft released for service. Aircraft operated several legs and fault recurred. On aug/thu/03, I was assigned same aircraft to continue troubleshooting per sil 26-029 without field technician. Core zone pins were swapped back to original position and fire detection unit pins were swapped. After the work was completed, maintenance control notified my lead that an 'eto' [engineering technical order] was required to release the aircraft in the new confign which they did not have. Maintenance control then requested to put aircraft wiring back to original confign. Aircraft was restored back to normal confign and released per MEL ok on aug/thu/03.
Original NASA ASRS Text
Title: AN AIRBUS 320 L ENG FIRE WARNING LOOP WIRING WAS RECONFIGURED AND OPERATED WITHOUT ENGINEERING APPROVAL OR DOCUMENTATION.
Narrative: ACFT #1 ENG FIRE LOOP B FAULT HAD LONG HISTORY. ON AUG/WED/03, ACFT REMAINED OVERNIGHT AT ZZZ. FIELD TECHNICIAN MAINT CTLR CAME TO DIRECT TROUBLESHOOTING. PROCS OUTLINED IN AIRBUS SIL 26-029, PAGE 9L. CORE ZONE PINS WERE SWAPPED, SYS TESTED GOOD. MEL REMOVED AND ACFT RELEASED FOR SVC. ACFT OPERATED SEVERAL LEGS AND FAULT RECURRED. ON AUG/THU/03, I WAS ASSIGNED SAME ACFT TO CONTINUE TROUBLESHOOTING PER SIL 26-029 WITHOUT FIELD TECHNICIAN. CORE ZONE PINS WERE SWAPPED BACK TO ORIGINAL POS AND FIRE DETECTION UNIT PINS WERE SWAPPED. AFTER THE WORK WAS COMPLETED, MAINT CTL NOTIFIED MY LEAD THAT AN 'ETO' [ENGINEERING TECHNICAL ORDER] WAS REQUIRED TO RELEASE THE ACFT IN THE NEW CONFIGN WHICH THEY DID NOT HAVE. MAINT CTL THEN REQUESTED TO PUT ACFT WIRING BACK TO ORIGINAL CONFIGN. ACFT WAS RESTORED BACK TO NORMAL CONFIGN AND RELEASED PER MEL OK ON AUG/THU/03.
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.