DC8 crew was unable to retract the landing gear after takeoff.

Attributes
ACN	474581
Time
Date	200005
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sdf.airport
State Reference	KY
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sdf.tower
Operator	common carrier : air carrier
Make Model Name	DC-8 70
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : multi engine pilot : commercial pilot : atp pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 40 flight time total : 4700 flight time type : 600
ASRS Report	474581
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 non adherence : company policies other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Company
Primary Problem	Flight Crew Human Performance

Narrative:

After takeoff on a hot standby assignment the main gear would not properly retract. After following the appropriate checklists, talking to flight control, and maintenance, the decision was made to return to sdf. All hydraulic system with the exception of the gear operated normally. Abnormal hydraulic indications were noted and system pressure was normal. The landing was uneventful. After the aircraft was secured we debrief with maintenance in the cockpit. A day later I was informed that the hydraulic system selector was found out of the normal detent. I did my normal preflight which includes checking the hydraulic system selector. The hydraulic system selector was left in the normal position. Again, during the flight all hydraulic system with exception of the main gear operated normally.

Original NASA ASRS Text

Title: DC8 CREW WAS UNABLE TO RETRACT THE LNDG GEAR AFTER TKOF.

Narrative: AFTER TKOF ON A HOT STANDBY ASSIGNMENT THE MAIN GEAR WOULD NOT PROPERLY RETRACT. AFTER FOLLOWING THE APPROPRIATE CHKLISTS, TALKING TO FLT CTL, AND MAINT, THE DECISION WAS MADE TO RETURN TO SDF. ALL HYD SYS WITH THE EXCEPTION OF THE GEAR OPERATED NORMALLY. ABNORMAL HYD INDICATIONS WERE NOTED AND SYS PRESSURE WAS NORMAL. THE LNDG WAS UNEVENTFUL. AFTER THE ACFT WAS SECURED WE DEBRIEF WITH MAINT IN THE COCKPIT. A DAY LATER I WAS INFORMED THAT THE HYD SYS SELECTOR WAS FOUND OUT OF THE NORMAL DETENT. I DID MY NORMAL PREFLT WHICH INCLUDES CHKING THE HYD SYS SELECTOR. THE HYD SYS SELECTOR WAS LEFT IN THE NORMAL POS. AGAIN, DURING THE FLT ALL HYD SYS WITH EXCEPTION OF THE MAIN GEAR OPERATED NORMALLY.

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.