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A C750 on takeoff declared an emergency and returned to the departure airport due to nose gear unsafe indication. Landed with nose gear partially extended. Aircraft damaged.
| Attributes | |
| ACN | 682618 |
| Time | |
| Date | 200512 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | general aviation : corporate |
| Make Model Name | Citation X |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 6400 flight time type : 1060 |
| ASRS Report | 682618 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 3300 flight time type : 120 |
| ASRS Report | 682883 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : nose gear position light other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : declared emergency flight crew : landed in emergency condition other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Put gear lever down; got 2 green main lights and unlock light. Tried to recycle the lever; but it would not come out of down position. Pulled nose gear unlatch handle; with no change. Pulled gear blow-down knob and discharged bottle pressure; with no change to indicated gear position. Landed on runway 8; mains touched; nose of aircraft contacted runway. Aircraft stopped on centerline; nose resting on gear doors. No injuries. Callback conversation with reporter revealed the following information: the reporter stated the problem was the failure of the nose landing gear down and lock microswitch which pwred the landing gear control handle solenoid to the down position. The manual override did not operate and the landing gear remained partially down. The nose landing gear doors incurred damage and both nose tires were blown.
Original NASA ASRS Text
Title: A C750 ON TKOF DECLARED AN EMER AND RETURNED TO THE DEP ARPT DUE TO NOSE GEAR UNSAFE INDICATION. LANDED WITH NOSE GEAR PARTIALLY EXTENDED. ACFT DAMAGED.
Narrative: PUT GEAR LEVER DOWN; GOT 2 GREEN MAIN LIGHTS AND UNLOCK LIGHT. TRIED TO RECYCLE THE LEVER; BUT IT WOULD NOT COME OUT OF DOWN POS. PULLED NOSE GEAR UNLATCH HANDLE; WITH NO CHANGE. PULLED GEAR BLOW-DOWN KNOB AND DISCHARGED BOTTLE PRESSURE; WITH NO CHANGE TO INDICATED GEAR POS. LANDED ON RWY 8; MAINS TOUCHED; NOSE OF ACFT CONTACTED RWY. ACFT STOPPED ON CTRLINE; NOSE RESTING ON GEAR DOORS. NO INJURIES. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE PROB WAS THE FAILURE OF THE NOSE LNDG GEAR DOWN AND LOCK MICROSWITCH WHICH PWRED THE LNDG GEAR CTL HANDLE SOLENOID TO THE DOWN POS. THE MANUAL OVERRIDE DID NOT OPERATE AND THE LNDG GEAR REMAINED PARTIALLY DOWN. THE NOSE LNDG GEAR DOORS INCURRED DAMAGE AND BOTH NOSE TIRES WERE BLOWN.
Data retrieved from NASA's ASRS site as of January 2009 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.