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A DC9-50, after takeoff at 1500 ft, declared an emergency and diverted due to landing gear unsafe warning. Cause unknown.
| Attributes | |
| ACN | 566321 |
| Time | |
| Date | 200211 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : msp.airport |
| State Reference | MN |
| Altitude | msl single value : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : m98.tracon tower : msp.tower tower : zzzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 50 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : multi engine |
| Experience | flight time last 90 days : 180 flight time total : 16500 flight time type : 6000 |
| ASRS Report | 566321 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : lndg gear position warning other flight crewa other flight crewb |
| Resolutory Action | flight crew : diverted to another airport flight crew : declared emergency |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication |
| Primary Problem | Aircraft |
Narrative:
After takeoff and gear retraction, we had 3 red gear unsafe lights and no amber gear door light. Climbed to 7000 ft MSL and maintained 220-230 KTS. Told msp departure control had a gear indication problem and would like to work on it. First officer flew aircraft while I did our communication procedure 2.32.17 gear handle-up/gear unsafe. Did the procedure and called dispatch/maintenance control and advised them of the problem. They advised us to return to msp. Advised msp approach control that we were returning to msp and to have the emergency equipment standing by. Advised flight attendants and passenger of the gear indication problem. Upon our return to msp, gear was extended, normal indications, and landed without incident. Callback conversation with reporter revealed the following information: the reporter stated the direct cause of the landing gear position indication malfunction was not released by maintenance, and was not followed up by the reporter. The reporter said it was believed to have been caused by an intermittent gear sensor.
Original NASA ASRS Text
Title: A DC9-50, AFTER TKOF AT 1500 FT, DECLARED AN EMER AND DIVERTED DUE TO LNDG GEAR UNSAFE WARNING. CAUSE UNKNOWN.
Narrative: AFTER TKOF AND GEAR RETRACTION, WE HAD 3 RED GEAR UNSAFE LIGHTS AND NO AMBER GEAR DOOR LIGHT. CLBED TO 7000 FT MSL AND MAINTAINED 220-230 KTS. TOLD MSP DEP CTL HAD A GEAR INDICATION PROB AND WOULD LIKE TO WORK ON IT. FO FLEW ACFT WHILE I DID OUR COM PROC 2.32.17 GEAR HANDLE-UP/GEAR UNSAFE. DID THE PROC AND CALLED DISPATCH/MAINT CTL AND ADVISED THEM OF THE PROB. THEY ADVISED US TO RETURN TO MSP. ADVISED MSP APCH CTL THAT WE WERE RETURNING TO MSP AND TO HAVE THE EMER EQUIP STANDING BY. ADVISED FLT ATTENDANTS AND PAX OF THE GEAR INDICATION PROB. UPON OUR RETURN TO MSP, GEAR WAS EXTENDED, NORMAL INDICATIONS, AND LANDED WITHOUT INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE DIRECT CAUSE OF THE LNDG GEAR POS INDICATION MALFUNCTION WAS NOT RELEASED BY MAINT, AND WAS NOT FOLLOWED UP BY THE RPTR. THE RPTR SAID IT WAS BELIEVED TO HAVE BEEN CAUSED BY AN INTERMITTENT GEAR SENSOR.
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.