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A DC9-30 returned to the field due to unable to close the main landing gear doors. Caused by the door control handle left in bypass position by maintenance.
| Attributes | |
| ACN | 526993 |
| Time | |
| Date | 200110 |
| Day | Sun |
| 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 | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : fcc technician : airframe |
| ASRS Report | 526993 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : diverted to another airport |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On security check of aircraft I open main gear door by opening bypass lever, I put the doors up manually but forgot to close bypass lever. Aircraft flying for air carrier took off and returned with gear doors down and doors suffered slight damage. I believe the only thing to prevent this from happening again is not to close doors manually, but to use hydraulics as doors will come up with hydraulic, but won't when lever is down.
Original NASA ASRS Text
Title: A DC9-30 RETURNED TO THE FIELD DUE TO UNABLE TO CLOSE THE MAIN LNDG GEAR DOORS. CAUSED BY THE DOOR CTL HANDLE LEFT IN BYPASS POS BY MAINT.
Narrative: ON SECURITY CHECK OF ACFT I OPEN MAIN GEAR DOOR BY OPENING BYPASS LEVER, I PUT THE DOORS UP MANUALLY BUT FORGOT TO CLOSE BYPASS LEVER. ACFT FLYING FOR ACR TOOK OFF AND RETURNED WITH GEAR DOORS DOWN AND DOORS SUFFERED SLIGHT DAMAGE. I BELIEVE THE ONLY THING TO PREVENT THIS FROM HAPPENING AGAIN IS NOT TO CLOSE DOORS MANUALLY, BUT TO USE HYDRAULICS AS DOORS WILL COME UP WITH HYD, BUT WON'T WHEN LEVER IS DOWN.
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.