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A DC9 on descent at 3000 ft declared an emergency due to a nose landing gear unsafe warning light caused by a failed nose gear proximity sensor.
| Attributes | |
| ACN | 404752 |
| Time | |
| Date | 199806 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : sdf |
| State Reference | KY |
| Altitude | agl bound lower : 0 agl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : sdf |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 600 flight time total : 9000 flight time type : 2400 |
| ASRS Report | 404752 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
On descent into sdf with gear extended, nose gear indicated unsafe. Followed company emergency procedures -- no help. Discussed situation with company maintenance control and dispatchers. Situation could not be resolved. Declared emergency, briefed passenger and flight attendants, and prepared for emergency landing. Landing was uneventful. Maintenance pinned landing gear and aircraft towed to the gate. All company procedures were followed and crew performed very well using CRM. The nose gear proximity sensor had broken and could not provide down and locked indication even though gear was down and locked.
Original NASA ASRS Text
Title: A DC9 ON DSCNT AT 3000 FT DECLARED AN EMER DUE TO A NOSE LNDG GEAR UNSAFE WARNING LIGHT CAUSED BY A FAILED NOSE GEAR PROX SENSOR.
Narrative: ON DSCNT INTO SDF WITH GEAR EXTENDED, NOSE GEAR INDICATED UNSAFE. FOLLOWED COMPANY EMER PROCS -- NO HELP. DISCUSSED SIT WITH COMPANY MAINT CTL AND DISPATCHERS. SIT COULD NOT BE RESOLVED. DECLARED EMER, BRIEFED PAX AND FLT ATTENDANTS, AND PREPARED FOR EMER LNDG. LNDG WAS UNEVENTFUL. MAINT PINNED LNDG GEAR AND ACFT TOWED TO THE GATE. ALL COMPANY PROCS WERE FOLLOWED AND CREW PERFORMED VERY WELL USING CRM. THE NOSE GEAR PROX SENSOR HAD BROKEN AND COULD NOT PROVIDE DOWN AND LOCKED INDICATION EVEN THOUGH GEAR WAS DOWN AND LOCKED.
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.