Medium large transport unable to retract nose gear when airborne. Pin still in.

Attributes
ACN	225964
Time
Date	199211
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	agl bound lower : 1000 agl bound upper : 1000
Environment
Flight Conditions	IMC
Light	Dawn
Aircraft 1
Controlling Facilities	tower : sea tower : myf
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : initial climbout : takeoff ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 13000 flight time type : 1800
ASRS Report	225964
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During routine preflight of our aircraft, I noticed gear pins were installed. After completing exterior preflight I returned to the cockpit and advised the captain that the pins were installed. The logbook showed there had been maintenance performed during the night on the nose gear sensor by contract mechanics, and all logbook write-ups had been cleared. I then called company operations and requested that the pins be pulled. The captain and I then became busy with our normal preflight and pre-departure duties. A short time later one of our operations agents came in the cockpit holding the pins in his hand and asked us where to put them, we advised him behind the first officer's seat. We then departed sea only to discover the nose gear would not retract. Upon returning to the ramp it was discovered the nose pin had, in fact, not been removed.

Original NASA ASRS Text

Title: MLG UNABLE TO RETRACT NOSE GEAR WHEN AIRBORNE. PIN STILL IN.

Narrative: DURING ROUTINE PREFLT OF OUR ACFT, I NOTICED GEAR PINS WERE INSTALLED. AFTER COMPLETING EXTERIOR PREFLT I RETURNED TO THE COCKPIT AND ADVISED THE CAPT THAT THE PINS WERE INSTALLED. THE LOGBOOK SHOWED THERE HAD BEEN MAINT PERFORMED DURING THE NIGHT ON THE NOSE GEAR SENSOR BY CONTRACT MECHS, AND ALL LOGBOOK WRITE-UPS HAD BEEN CLRED. I THEN CALLED COMPANY OPS AND REQUESTED THAT THE PINS BE PULLED. THE CAPT AND I THEN BECAME BUSY WITH OUR NORMAL PREFLT AND PRE-DEP DUTIES. A SHORT TIME LATER ONE OF OUR OPS AGENTS CAME IN THE COCKPIT HOLDING THE PINS IN HIS HAND AND ASKED US WHERE TO PUT THEM, WE ADVISED HIM BEHIND THE FO'S SEAT. WE THEN DEPARTED SEA ONLY TO DISCOVER THE NOSE GEAR WOULD NOT RETRACT. UPON RETURNING TO THE RAMP IT WAS DISCOVERED THE NOSE PIN HAD, IN FACT, NOT BEEN REMOVED.

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.