An air carrier DC9 first officer reports that he had an aircraft equipment problem nose gear door actuator failure upon gear retraction. Emergency declared. Return land. Diversion to alternate.

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Attributes
ACN	351574
Time
Date	199610
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : rap
State Reference	SD
Altitude	agl bound lower : 200 agl bound upper : 200
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : rap
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 80 flight time total : 8000 flight time type : 80
ASRS Report	351574
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Upon gear retraction, a loud bang occurred followed by vibration to the aircraft. Got louder with speed increase. Leveled off, stayed in pattern, declared emergency, returned for landing. Had emergency crew examine nosewheel and taxied to gate. Not really any procedures in book to cover. Decided if we got gear down and locked, we would keep them down and land. We did and we did. We experienced a nose gear door actuator failure.

Original NASA ASRS Text

Title: AN ACR DC9 FO RPTS THAT HE HAD AN ACFT EQUIP PROB NOSE GEAR DOOR ACTUATOR FAILURE UPON GEAR RETRACTION. EMER DECLARED. RETURN LAND. DIVERSION TO ALTERNATE.

Narrative: UPON GEAR RETRACTION, A LOUD BANG OCCURRED FOLLOWED BY VIBRATION TO THE ACFT. GOT LOUDER WITH SPD INCREASE. LEVELED OFF, STAYED IN PATTERN, DECLARED EMER, RETURNED FOR LNDG. HAD EMER CREW EXAMINE NOSEWHEEL AND TAXIED TO GATE. NOT REALLY ANY PROCS IN BOOK TO COVER. DECIDED IF WE GOT GEAR DOWN AND LOCKED, WE WOULD KEEP THEM DOWN AND LAND. WE DID AND WE DID. WE EXPERIENCED A NOSE GEAR DOOR ACTUATOR FAILURE.

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.