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A mechanic reports how two B757-200 aircraft sustained damage when the aft cowl latch access panel door opens in flight; causing damage to the reverser when deployed on landing rollout.
| Attributes | |
| ACN | 792784 |
| Time | |
| Date | 200804 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground other : under tow |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 792784 |
| Events | |
| Anomaly | maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : briefing performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Two aircraft this yr so far have sustained damage due to a recognized condition addressed in service tip maintenance manual where the aft cowl latch access panel door opens in-flight and causes damage to the reverser when deployed on rollout. The door bumper stop arm in ipc notes 2 components to be checked for wear in the service tip. These components cost about $200.00; where the reverser damage can cost $250;000.00 considering out-of-service time; reverser damage; ferry cost; etc.
Original NASA ASRS Text
Title: A MECHANIC REPORTS HOW TWO B757-200 ACFT SUSTAINED DAMAGE WHEN THE AFT COWL LATCH ACCESS PANEL DOOR OPENS IN FLIGHT; CAUSING DAMAGE TO THE REVERSER WHEN DEPLOYED ON LANDING ROLLOUT.
Narrative: TWO ACFT THIS YR SO FAR HAVE SUSTAINED DAMAGE DUE TO A RECOGNIZED CONDITION ADDRESSED IN SVC TIP MAINT MANUAL WHERE THE AFT COWL LATCH ACCESS PANEL DOOR OPENS INFLT AND CAUSES DAMAGE TO THE REVERSER WHEN DEPLOYED ON ROLLOUT. THE DOOR BUMPER STOP ARM IN IPC NOTES 2 COMPONENTS TO BE CHKED FOR WEAR IN THE SVC TIP. THESE COMPONENTS COST ABOUT $200.00; WHERE THE REVERSER DAMAGE CAN COST $250;000.00 CONSIDERING OUT-OF-SVC TIME; REVERSER DAMAGE; FERRY COST; ETC.
Data retrieved from NASA's ASRS site as of May 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.