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An embraer 120 on initial climb at 400 ft AGL declared an emergency and diverted due to unable to retract the left main landing gear caused by a failed proximity sensor.
| Attributes | |
| ACN | 477550 |
| Time | |
| Date | 200006 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 400 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 121 |
| 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 : commercial pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 250 flight time total : 11000 flight time type : 8000 |
| ASRS Report | 477550 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : lndg gear position indication other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : landed as precaution flight crew : declared emergency |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : fault isolation performance deficiency : testing |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
After takeoff, left main landing gear would not retract. Landing gear was cycled and left main gear retracted fully. Maintenance operations (company) was contacted and requested that flight return to departure airport (mco). This particular aircraft had the same problem the previous day and was returned to service. Callback conversation with reporter revealed the following information: the reporter stated the aircraft had previous reports on left main gear failure to retract and was worked overnight at ZZZ. The reporter said the aircraft was jacked and the gear swung and operated normally. The reporter stated the positive fix was a left landing gear proximity sensor which failed in the ground mode.
Original NASA ASRS Text
Title: AN EMBRAER 120 ON INITIAL CLB AT 400 FT AGL DECLARED AN EMER AND DIVERTED DUE TO UNABLE TO RETRACT THE L MAIN LNDG GEAR CAUSED BY A FAILED PROX SENSOR.
Narrative: AFTER TKOF, L MAIN LNDG GEAR WOULD NOT RETRACT. LNDG GEAR WAS CYCLED AND L MAIN GEAR RETRACTED FULLY. MAINT OPS (COMPANY) WAS CONTACTED AND REQUESTED THAT FLT RETURN TO DEP ARPT (MCO). THIS PARTICULAR ACFT HAD THE SAME PROB THE PREVIOUS DAY AND WAS RETURNED TO SVC. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT HAD PREVIOUS RPTS ON L MAIN GEAR FAILURE TO RETRACT AND WAS WORKED OVERNIGHT AT ZZZ. THE RPTR SAID THE ACFT WAS JACKED AND THE GEAR SWUNG AND OPERATED NORMALLY. THE RPTR STATED THE POSITIVE FIX WAS A L LNDG GEAR PROX SENSOR WHICH FAILED IN THE GND MODE.
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.