A fokker 100 on takeoff climb at 1000 ft declared an emergency due to loss of #1 hydraulic system pressure and quantity caused by a ailed right main gear door actuator.

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Attributes
ACN	458543
Time
Date	199912
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : pit.airport
State Reference	PA
Altitude	agl single value : 1000
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	tracon : pit.tracon tower : sjc.tower
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : takeoff
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 75 flight time total : 5500 flight time type : 250
ASRS Report	458543
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : #1 low pressure warning light other flight crewa
Resolutory Action	flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

After takeoff, the captain noticed after retracting the gear that the light in the handle remained illuminated. This was followed by a hydraulic system #1 low pressure warning and then multiple hydraulic related warnings. We were informed on the ground that the right gear door actuator came apart. We circled until accomplishing all abnormal procedures and landed on runway 28R to a full stop. We were then towed to the gate. Callback conversation with reporter revealed the following information: the reporter stated the aircraft was a fokker 100 and the cause of the hydraulic failure was a cracked right main gear actuator cylinder.

Original NASA ASRS Text

Title: A FOKKER 100 ON TKOF CLB AT 1000 FT DECLARED AN EMER DUE TO LOSS OF #1 HYD SYS PRESSURE AND QUANTITY CAUSED BY A AILED R MAIN GEAR DOOR ACTUATOR.

Narrative: AFTER TKOF, THE CAPT NOTICED AFTER RETRACTING THE GEAR THAT THE LIGHT IN THE HANDLE REMAINED ILLUMINATED. THIS WAS FOLLOWED BY A HYD SYS #1 LOW PRESSURE WARNING AND THEN MULTIPLE HYD RELATED WARNINGS. WE WERE INFORMED ON THE GND THAT THE R GEAR DOOR ACTUATOR CAME APART. WE CIRCLED UNTIL ACCOMPLISHING ALL ABNORMAL PROCS AND LANDED ON RWY 28R TO A FULL STOP. WE WERE THEN TOWED TO THE GATE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS A FOKKER 100 AND THE CAUSE OF THE HYD FAILURE WAS A CRACKED R MAIN GEAR ACTUATOR CYLINDER.

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.