Hydraulic system failure causes diversion to alternate airport.

Attributes
ACN	239790
Time
Date	199304
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : col airport : ewr airport : phl
State Reference	NJ
Altitude	msl bound lower : 20000 msl bound upper : 20000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	approach : circling
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 19000
ASRS Report	239790
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 162 flight time total : 7000
ASRS Report	239794
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Climbing through 20000 ft on normal scheduled flight phl-alb we lost a hydraulic system. Diverted to ewr (nearest suitable airport) and made uneventful landing on runway 29 in accordance with abnormal checklist. Maintenance towed aircraft to gate. Supplemental information from acn 239794: I was flying the aircraft, gave control of aircraft to captain and pulled out pilots handbook, went to abnormals section for loss of system 'a' hydraulics. We declared an emergency by colts neck VOR for diversion to ewr.

Original NASA ASRS Text

Title: HYD SYS FAILURE CAUSES DIVERSION TO ALTERNATE ARPT.

Narrative: CLBING THROUGH 20000 FT ON NORMAL SCHEDULED FLT PHL-ALB WE LOST A HYD SYS. DIVERTED TO EWR (NEAREST SUITABLE ARPT) AND MADE UNEVENTFUL LNDG ON RWY 29 IN ACCORDANCE WITH ABNORMAL CHKLIST. MAINT TOWED ACFT TO GATE. SUPPLEMENTAL INFORMATION FROM ACN 239794: I WAS FLYING THE ACFT, GAVE CTL OF ACFT TO CAPT AND PULLED OUT PLTS HANDBOOK, WENT TO ABNORMALS SECTION FOR LOSS OF SYS 'A' HYDS. WE DECLARED AN EMER BY COLTS NECK VOR FOR DIVERSION TO EWR.

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.