DC9-30 crew returned to their departure station after discovering they were unable to raise the land...

Attributes
ACN	527834
Time
Date	200110
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : t75.tracon
State Reference	MO
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : t75.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 30
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude climbout : initial
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : flight engineer pilot : multi engine
Experience	flight time last 90 days : 220 flight time total : 11000 flight time type : 5600
ASRS Report	527834
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : company policies non adherence : far non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : lndg gear lights other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist controller : issued new clearance flight crew : diverted to another airport none taken : detected after the fact other
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : inspection performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Maintenance Human Performance Company Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

Gear failed to retract due to a maintenance bypass valve on belly of aircraft extended in position. By pass valve was extended by maintenance after external and cockpit preflts were conducted. Ran appropriate checklists, returned to stl without incident. More detailed reports filed with company. Maintenance realized their mistake and claimed it was not an ordinary practice to do this inspection so close to departure time.

Original NASA ASRS Text

Title: DC9-30 CREW RETURNED TO THEIR DEP STATION AFTER DISCOVERING THEY WERE UNABLE TO RAISE THE LNDG GEAR AT STL.

Narrative: GEAR FAILED TO RETRACT DUE TO A MAINT BYPASS VALVE ON BELLY OF ACFT EXTENDED IN POS. BY PASS VALVE WAS EXTENDED BY MAINT AFTER EXTERNAL AND COCKPIT PREFLTS WERE CONDUCTED. RAN APPROPRIATE CHKLISTS, RETURNED TO STL WITHOUT INCIDENT. MORE DETAILED RPTS FILED WITH COMPANY. MAINT REALIZED THEIR MISTAKE AND CLAIMED IT WAS NOT AN ORDINARY PRACTICE TO DO THIS INSPECTION SO CLOSE TO DEP TIME.

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.

DC9-30 crew returned to their departure station after discovering they were unable to raise the landing gear at stl.