 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B757-200 aircraft arrived with a spoiler EICAS message illuminated in flight (cruise) on upper display. 2L spoiler mod faulted. Deactivated wrong spoiler pair.
| Attributes | |
| ACN | 738476 |
| Time | |
| Date | 200705 |
| 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 | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 30 |
| ASRS Report | 738476 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : fcc technician : powerplant technician : airframe |
| Experience | maintenance lead technician : 9 maintenance technician : 16 |
| ASRS Report | 738477 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : published procedure non adherence : far aircraft equipment problem : critical |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : non availability of parts performance deficiency : non compliance with legal requirements performance deficiency : testing performance deficiency : logbook entry performance deficiency : inspection performance deficiency : fault isolation |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Aircraft X arrived ZZZ flight abc gate xx with log entry X 'spoiler EICAS message illuminated in-flight (cruise) on upper display as well as overhead repeat write-up.' T/south problem and #2L spoiler modification faulted positive control area. In error; deactivated wrong spoiler pair (2 and 11) when spoilers 5 and 8 were the correct pair. Supplemental information from acn 738477: the wrong spoiler pair was locked out with respect to the module fault. The confusion was attributed to the module number in relation to the spoiler number. The problem was found after returning to the line room and doublechking the maintenance manual; which was on site at aircraft. In the future; doublechking should be done before maintenance is performed!
Original NASA ASRS Text
Title: A B757-200 ACFT ARRIVED WITH A SPOILER EICAS MSG ILLUMINATED IN FLT (CRUISE) ON UPPER DISPLAY. 2L SPOILER MOD FAULTED. DEACTIVATED WRONG SPOILER PAIR.
Narrative: ACFT X ARRIVED ZZZ FLT ABC GATE XX WITH LOG ENTRY X 'SPOILER EICAS MESSAGE ILLUMINATED INFLT (CRUISE) ON UPPER DISPLAY AS WELL AS OVERHEAD REPEAT WRITE-UP.' T/S PROB AND #2L SPOILER MODIFICATION FAULTED PCA. IN ERROR; DEACTIVATED WRONG SPOILER PAIR (2 AND 11) WHEN SPOILERS 5 AND 8 WERE THE CORRECT PAIR. SUPPLEMENTAL INFO FROM ACN 738477: THE WRONG SPOILER PAIR WAS LOCKED OUT WITH RESPECT TO THE MODULE FAULT. THE CONFUSION WAS ATTRIBUTED TO THE MODULE NUMBER IN RELATION TO THE SPOILER NUMBER. THE PROB WAS FOUND AFTER RETURNING TO THE LINE ROOM AND DOUBLECHKING THE MAINT MANUAL; WHICH WAS ON SITE AT ACFT. IN THE FUTURE; DOUBLECHKING SHOULD BE DONE BEFORE MAINT IS PERFORMED!
Data retrieved from NASA's ASRS site as of January 2009 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.