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A DC10-30F on takeoff to FL240 had the left main gear unsafe light on forward and so panel with gear handle up. Declared an emergency, dumped fuel and diverted. Caused by left main gear position sensors out of adjustment.
| Attributes | |
| ACN | 422063 |
| Time | |
| Date | 199812 |
| Day | Sat |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : kne |
| State Reference | FO |
| Altitude | msl bound lower : 0 msl bound upper : 24000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 30F |
| Operating Under FAR Part | Part 121 |
| Flight Phase | other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer |
| Experience | flight time last 90 days : 90 flight time total : 7500 flight time type : 2500 |
| ASRS Report | 422063 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
Narrative:
On takeoff the left main landing gear red unsafe lights on both the front and so's panels remained illuminated with the gear handle up. The 'red gear light(south) illuminated (both panels) with handle up' checklist was executed with no change of indication (red lights continued to be illuminated on both panels). Company was contacted via ACARS. They confirmed to us that with our possible confign we did not have sufficient fuel to continue to destination. An emergency was declared, approximately 27000 pounds of fuel was dumped and we diverted into rjaa (tokyo narita) without further incident. Maintenance informed us that they adjusted sensors for the landing gear indicating system. The aircraft had recently come out of a 'D' check in singapore. We flew the aircraft to panc later that day with all indications normal.
Original NASA ASRS Text
Title: A DC10-30F ON TKOF TO FL240 HAD THE L MAIN GEAR UNSAFE LIGHT ON FORWARD AND SO PANEL WITH GEAR HANDLE UP. DECLARED AN EMER, DUMPED FUEL AND DIVERTED. CAUSED BY L MAIN GEAR POS SENSORS OUT OF ADJUSTMENT.
Narrative: ON TKOF THE L MAIN LNDG GEAR RED UNSAFE LIGHTS ON BOTH THE FRONT AND SO'S PANELS REMAINED ILLUMINATED WITH THE GEAR HANDLE UP. THE 'RED GEAR LIGHT(S) ILLUMINATED (BOTH PANELS) WITH HANDLE UP' CHKLIST WAS EXECUTED WITH NO CHANGE OF INDICATION (RED LIGHTS CONTINUED TO BE ILLUMINATED ON BOTH PANELS). COMPANY WAS CONTACTED VIA ACARS. THEY CONFIRMED TO US THAT WITH OUR POSSIBLE CONFIGN WE DID NOT HAVE SUFFICIENT FUEL TO CONTINUE TO DEST. AN EMER WAS DECLARED, APPROX 27000 LBS OF FUEL WAS DUMPED AND WE DIVERTED INTO RJAA (TOKYO NARITA) WITHOUT FURTHER INCIDENT. MAINT INFORMED US THAT THEY ADJUSTED SENSORS FOR THE LNDG GEAR INDICATING SYS. THE ACFT HAD RECENTLY COME OUT OF A 'D' CHK IN SINGAPORE. WE FLEW THE ACFT TO PANC LATER THAT DAY WITH ALL INDICATIONS NORMAL.
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.