An air carrier emb 120 flight crew return to their departure airport when they cannot raise the right main landing gear. All the gear extended normally.

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Attributes
ACN	343783
Time
Date	199608
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	agl bound lower : 50 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iah tower : iah
Operator	common carrier : air carrier
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 135
Navigation In Use	Other Other
Flight Phase	climbout : initial other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 250 flight time total : 8000 flight time type : 6000
ASRS Report	343783
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft had just been released by maintenance after changing the outboard, right main gear door. During preflight by maintenance and confirmed by the first officer, all gear pins were removed. During takeoff, the gear was selected up. The left main and nose gear retracted normally. The right main did not move. We had both 2 red and 2 green lights on the right main. We retried the gear 2 times with the same results. We reselected the gear down and informed houston departure of our need to return to iah. After informing the company, flight attendants, and passenger of the situation, we returned to iah for a normal landing on runway 9.

Original NASA ASRS Text

Title: AN ACR EMB 120 FLC RETURN TO THEIR DEP ARPT WHEN THEY CANNOT RAISE THE R MAIN LNDG GEAR. ALL THE GEAR EXTENDED NORMALLY.

Narrative: ACFT HAD JUST BEEN RELEASED BY MAINT AFTER CHANGING THE OUTBOARD, R MAIN GEAR DOOR. DURING PREFLT BY MAINT AND CONFIRMED BY THE FO, ALL GEAR PINS WERE REMOVED. DURING TKOF, THE GEAR WAS SELECTED UP. THE L MAIN AND NOSE GEAR RETRACTED NORMALLY. THE R MAIN DID NOT MOVE. WE HAD BOTH 2 RED AND 2 GREEN LIGHTS ON THE R MAIN. WE RETRIED THE GEAR 2 TIMES WITH THE SAME RESULTS. WE RESELECTED THE GEAR DOWN AND INFORMED HOUSTON DEP OF OUR NEED TO RETURN TO IAH. AFTER INFORMING THE COMPANY, FLT ATTENDANTS, AND PAX OF THE SIT, WE RETURNED TO IAH FOR A NORMAL LNDG ON RWY 9.

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.