B727 flight crew return land after being unable to retract landing gear. Gear pins left in.

Attributes
ACN	536848
Time
Date	200201
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Weather Elements	Ice Snow
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff climbout : initial ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 150 flight time total : 5500 flight time type : 1500
ASRS Report	536848
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 270 flight time total : 15500 flight time type : 2000
ASRS Report	536693
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper documentation other anomaly other
Independent Detector	other other : 4
Resolutory Action	flight crew : landed as precaution other
Consequence	other other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

After takeoff, main gear would not retract. Advised ATC that we wanted to return to ZZZ. We got vectored for the ILS at ZZZ. Landed, taxied to ramp. Maintenance found both main gear pins installed. So did a walkaround prior to flight and said they were not installed during the preflight walkaround. Logbook showed they had removed pins prior to our flight. A mechanic said he had installed them because the ramp was slippery and he had not re-entered it in the logbook.

Original NASA ASRS Text

Title: B727 FLC RETURN LAND AFTER BEING UNABLE TO RETRACT LNDG GEAR. GEAR PINS LEFT IN.

Narrative: AFTER TKOF, MAIN GEAR WOULD NOT RETRACT. ADVISED ATC THAT WE WANTED TO RETURN TO ZZZ. WE GOT VECTORED FOR THE ILS AT ZZZ. LANDED, TAXIED TO RAMP. MAINT FOUND BOTH MAIN GEAR PINS INSTALLED. SO DID A WALKAROUND PRIOR TO FLT AND SAID THEY WERE NOT INSTALLED DURING THE PREFLT WALKAROUND. LOGBOOK SHOWED THEY HAD REMOVED PINS PRIOR TO OUR FLT. A MECH SAID HE HAD INSTALLED THEM BECAUSE THE RAMP WAS SLIPPERY AND HE HAD NOT RE-ENTERED IT IN THE LOGBOOK.

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.