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A B757-200 had an airworthiness directive issued on escape door slide sensor which contained an error causing false EICAS position warning. Engineering corrected error but airworthiness directive note not corrected.
| Attributes | |
| ACN | 477687 |
| Time | |
| Date | 200003 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| 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 ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : repairman technician : fcc |
| Experience | maintenance avionics : 2 maintenance repairman : 14 |
| ASRS Report | 477687 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance lead technician : 5 maintenance technician : 15 |
| ASRS Report | 477688 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : person 1 |
| Resolutory Action | none taken : unable |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : manuals performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Chart Or Publication Company Maintenance Human Performance Aircraft |
| Primary Problem | Company |
Narrative:
During the modification of overwing slide door sensor and target relocation, it was found that EICAS system did not display door open message with forward latch in unlatched condition. Engineering was contacted, deviated from airworthiness directive per engineering, trimmed target, after 4 months no change in airworthiness directive and told by management not to deviate from airworthiness directive even if it's wrong. Contacted air carrier quality assurance reference maintenance manual 757 xx-yy-ww, airworthiness directive #wxx-VVV.
Original NASA ASRS Text
Title: A B757-200 HAD AN AIRWORTHINESS DIRECTIVE ISSUED ON ESCAPE DOOR SLIDE SENSOR WHICH CONTAINED AN ERROR CAUSING FALSE EICAS POS WARNING. ENGINEERING CORRECTED ERROR BUT AIRWORTHINESS DIRECTIVE NOTE NOT CORRECTED.
Narrative: DURING THE MODIFICATION OF OVERWING SLIDE DOOR SENSOR AND TARGET RELOCATION, IT WAS FOUND THAT EICAS SYS DID NOT DISPLAY DOOR OPEN MESSAGE WITH FORWARD LATCH IN UNLATCHED CONDITION. ENGINEERING WAS CONTACTED, DEVIATED FROM AIRWORTHINESS DIRECTIVE PER ENGINEERING, TRIMMED TARGET, AFTER 4 MONTHS NO CHANGE IN AIRWORTHINESS DIRECTIVE AND TOLD BY MGMNT NOT TO DEVIATE FROM AIRWORTHINESS DIRECTIVE EVEN IF IT'S WRONG. CONTACTED ACR QUALITY ASSURANCE REF MAINT MANUAL 757 XX-YY-WW, AIRWORTHINESS DIRECTIVE #WXX-VVV.
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.