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A B757-200 was dispatched in non compliance with the right engine one fan blade damage outside of allowable limits.
| Attributes | |
| ACN | 622696 |
| Time | |
| Date | 200406 |
| 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 | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance lead technician : 16 maintenance technician : 36 |
| ASRS Report | 622696 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical ground encounters : fod maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : person 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : manuals performance deficiency : inspection performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
On walkaround a crew member spotted FOD to the #2 engine, lp fan blade 21. The damage fell under the description of a bend. I misinterped the maintenance manual and determined the damage was within allowable limits, and released the aircraft. Engineering later recalculated my figures and determined the damage was outside allowable limits. The aircraft was stopped at the next station and the blade was replaced.
Original NASA ASRS Text
Title: A B757-200 WAS DISPATCHED IN NON COMPLIANCE WITH THE R ENG ONE FAN BLADE DAMAGE OUTSIDE OF ALLOWABLE LIMITS.
Narrative: ON WALKAROUND A CREW MEMBER SPOTTED FOD TO THE #2 ENG, LP FAN BLADE 21. THE DAMAGE FELL UNDER THE DESCRIPTION OF A BEND. I MISINTERPED THE MAINT MANUAL AND DETERMINED THE DAMAGE WAS WITHIN ALLOWABLE LIMITS, AND RELEASED THE ACFT. ENGINEERING LATER RECALCULATED MY FIGURES AND DETERMINED THE DAMAGE WAS OUTSIDE ALLOWABLE LIMITS. THE ACFT WAS STOPPED AT THE NEXT STATION AND THE BLADE WAS REPLACED.
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.