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An MD80, in climb at 6000 ft, declared an emergency and diverted, due to nose gear red unsafe warning light with gear retracted. Cause unknown.
| Attributes | |
| ACN | 487521 |
| Time | |
| Date | 200010 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : phx.airport |
| State Reference | AZ |
| Altitude | msl single value : 6000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : p50.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : initial |
| Route In Use | departure : other published ifr departure |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 487521 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : nose gear position indication other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : diverted to another airport flight crew : declared emergency |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
After takeoff red nose gear light stayed on with excessive air noise. Followed red book procedures with no help. Landed with 3 green lights. Landing uneventful and smooth. Weight as 142000 pounds. I did have a pin and a salute upon release from the tug crew. We got towed to the gate and I had the tug driver confirm that there was no pin in the nose gear. When we put the flap handle to 28 degrees we heard a distinct thump, not knowing whether it was a bird strike or the nose gear. We think it was the nose gear. We had the a green light at all times for the nose and had tower visually confirm it was down. Had arff standing by. Callback conversation with reporter revealed the following information: the reporter stated, on the return to the gate, the technician advised the captain it looked like a strut extension problem (all nitrogen and no oil) in the strut. The reporter said another airplane was ready for the crew to take and maintenance had not started troubleshooting the nose gear problem, so no positive fix information is known.
Original NASA ASRS Text
Title: AN MD80, IN CLB AT 6000 FT, DECLARED AN EMER AND DIVERTED, DUE TO NOSE GEAR RED UNSAFE WARNING LIGHT WITH GEAR RETRACTED. CAUSE UNKNOWN.
Narrative: AFTER TKOF RED NOSE GEAR LIGHT STAYED ON WITH EXCESSIVE AIR NOISE. FOLLOWED RED BOOK PROCS WITH NO HELP. LANDED WITH 3 GREEN LIGHTS. LNDG UNEVENTFUL AND SMOOTH. WT AS 142000 LBS. I DID HAVE A PIN AND A SALUTE UPON RELEASE FROM THE TUG CREW. WE GOT TOWED TO THE GATE AND I HAD THE TUG DRIVER CONFIRM THAT THERE WAS NO PIN IN THE NOSE GEAR. WHEN WE PUT THE FLAP HANDLE TO 28 DEGS WE HEARD A DISTINCT THUMP, NOT KNOWING WHETHER IT WAS A BIRD STRIKE OR THE NOSE GEAR. WE THINK IT WAS THE NOSE GEAR. WE HAD THE A GREEN LIGHT AT ALL TIMES FOR THE NOSE AND HAD TWR VISUALLY CONFIRM IT WAS DOWN. HAD ARFF STANDING BY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED, ON THE RETURN TO THE GATE, THE TECHNICIAN ADVISED THE CAPT IT LOOKED LIKE A STRUT EXTENSION PROB (ALL NITROGEN AND NO OIL) IN THE STRUT. THE RPTR SAID ANOTHER AIRPLANE WAS READY FOR THE CREW TO TAKE AND MAINT HAD NOT STARTED TROUBLESHOOTING THE NOSE GEAR PROB, SO NO POSITIVE FIX INFO IS KNOWN.
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.