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A B737-700 #1 engine outboard thrust reverser sleeve was impacted by #4 leading edge slat during flap extension. Mechanic did not notice the reverser cowl was being raised.
| Attributes | |
| ACN | 775122 |
| Time | |
| Date | 200802 |
| 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 | B737-700 |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 775122 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 775121 |
| Events | |
| Anomaly | aircraft equipment problem : critical 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 |
| Supplementary | |
| Problem Areas | Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Cleared flaps to be lowered and missed the #1 engine thrust reverser being raised. The #4 slat impacted the thrust reverser sleeve on outboard side of #1 engine.
Original NASA ASRS Text
Title: A B737-700 #1 ENG OUTBOARD THRUST REVERSER SLEEVE WAS IMPACTED BY #4 LEADING EDGE SLAT DURING FLAP EXTENSION. MECHANIC DID NOT NOTICE THE REVERSER COWL WAS BEING RAISED.
Narrative: CLRED FLAPS TO BE LOWERED AND MISSED THE #1 ENG THRUST REVERSER BEING RAISED. THE #4 SLAT IMPACTED THE THRUST REVERSER SLEEVE ON OUTBOARD SIDE OF #1 ENG.
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.