CL65 flight crew return land after observing that the landing gear had not properly retracted after takeoff. Nose gear pin was found still installed.

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Attributes
ACN	531404
Time
Date	200111
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mem.airport
State Reference	TN
Environment
Flight Conditions	IMC
Weather Elements	Rain Fog
Light	Night
Aircraft 1
Controlling Facilities	tracon : mem.tracon
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 240 flight time total : 4000 flight time type : 2500
ASRS Report	531404
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : lndg gear position ind other flight crewa other flight crewb
Resolutory Action	flight crew : landed as precaution other
Consequence	other other
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Flight Crew Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

We had been delayed for maintenance for 5 hours in heavy rain. While the crew sat inside operations, the ramp personnel moved the aircraft from the gate. After maintenance finished, I did a walkaround and confirmed the engine cowling was reinstalled properly. No gear pin flag was observed. The ramp personnel removed the chocks and we taxied for departure. On climb out, we received a gear disagreement message, and returned to the field for landing. After landing, we taxied in to the gate and checked the nose gear and found the pin installed. The captain went inside and called for maintenance. We then proceeded back to cvg. One possible problem we learned of was that the station personnel told us that our code share carrier doesn't use gear pins for push. So they may not have used the pin on the other pushes they had done. They see a CL65 and sometimes just push. Secondly, they also open the nose door on the ground to install the pin. This is not our procedure and could possibly leave the pin flag closed inside the nose gear bay.

Original NASA ASRS Text

Title: CL65 FLC RETURN LAND AFTER OBSERVING THAT THE LNDG GEAR HAD NOT PROPERLY RETRACTED AFTER TKOF. NOSE GEAR PIN WAS FOUND STILL INSTALLED.

Narrative: WE HAD BEEN DELAYED FOR MAINT FOR 5 HRS IN HVY RAIN. WHILE THE CREW SAT INSIDE OPS, THE RAMP PERSONNEL MOVED THE ACFT FROM THE GATE. AFTER MAINT FINISHED, I DID A WALKAROUND AND CONFIRMED THE ENG COWLING WAS REINSTALLED PROPERLY. NO GEAR PIN FLAG WAS OBSERVED. THE RAMP PERSONNEL REMOVED THE CHOCKS AND WE TAXIED FOR DEP. ON CLBOUT, WE RECEIVED A GEAR DISAGREEMENT MESSAGE, AND RETURNED TO THE FIELD FOR LNDG. AFTER LNDG, WE TAXIED IN TO THE GATE AND CHKED THE NOSE GEAR AND FOUND THE PIN INSTALLED. THE CAPT WENT INSIDE AND CALLED FOR MAINT. WE THEN PROCEEDED BACK TO CVG. ONE POSSIBLE PROB WE LEARNED OF WAS THAT THE STATION PERSONNEL TOLD US THAT OUR CODE SHARE CARRIER DOESN'T USE GEAR PINS FOR PUSH. SO THEY MAY NOT HAVE USED THE PIN ON THE OTHER PUSHES THEY HAD DONE. THEY SEE A CL65 AND SOMETIMES JUST PUSH. SECONDLY, THEY ALSO OPEN THE NOSE DOOR ON THE GND TO INSTALL THE PIN. THIS IS NOT OUR PROC AND COULD POSSIBLY LEAVE THE PIN FLAG CLOSED INSIDE THE NOSE GEAR BAY.

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.