 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B77-300 had #2 engine inboard thrust reverser fan cowling damaged when the leading edge flaps were extended on the opened cowling.
| Attributes | |
| ACN | 685048 |
| Time | |
| Date | 200601 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 685048 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : company policies non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : inspection performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Environmental Factor Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
#2 c-duct opened for scheduled pre-cooler valve change. While allowing hot section to cool; I proceeded with rest of my scheduled maintenance. Approximately 2 hours after c-duct opening; I did an operational test of flaps on my own. Flaps were lowered into the opened c-duct causing damage.
Original NASA ASRS Text
Title: A B77-300 HAD #2 ENG INBOARD THRUST REVERSER FAN COWLING DAMAGED WHEN THE LEADING EDGE FLAPS WERE EXTENDED ON THE OPENED COWLING.
Narrative: #2 C-DUCT OPENED FOR SCHEDULED PRE-COOLER VALVE CHANGE. WHILE ALLOWING HOT SECTION TO COOL; I PROCEEDED WITH REST OF MY SCHEDULED MAINT. APPROX 2 HRS AFTER C-DUCT OPENING; I DID AN OPERATIONAL TEST OF FLAPS ON MY OWN. FLAPS WERE LOWERED INTO THE OPENED C-DUCT CAUSING DAMAGE.
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.