B727 crew had a system hydraulic failure.

Attributes
ACN	452090
Time
Date	199910
Day	Mon
Local Time Of Day	0601 To 1200
Place
Altitude	msl single value : 20000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zmp.artcc
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	controller military : 10 controller non radar : 2 controller radar : 22 flight time last 90 days : 110 flight time total : 9000 flight time type : 3000
ASRS Report	452090
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 other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : landed in emergency condition flight crew : diverted to another airport flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

While climbing out of msp at FL200, the so said we had a low pressure light on the #1 engine hydraulic pump. I looked at the so's panel and noticed the 'a' system hydraulic quantity was at zero. We started the loss of 'a' system procedure and the #2 engine driven pump low pressure light illuminated. I decided to divert to dtw to burn down gas to get below landing weight. We finished the loss of 'a' system hydraulics and continued to dtw. We declared an emergency and coordinated landing on the longest runway in dtw. We lowered the flaps and gear with the alternate system and landed in dtw. I taxied clear of the runway and stopped and called maintenance to tow the aircraft to the gate.

Original NASA ASRS Text

Title: B727 CREW HAD A SYS HYD FAILURE.

Narrative: WHILE CLBING OUT OF MSP AT FL200, THE SO SAID WE HAD A LOW PRESSURE LIGHT ON THE #1 ENG HYD PUMP. I LOOKED AT THE SO'S PANEL AND NOTICED THE 'A' SYS HYD QUANTITY WAS AT ZERO. WE STARTED THE LOSS OF 'A' SYS PROC AND THE #2 ENG DRIVEN PUMP LOW PRESSURE LIGHT ILLUMINATED. I DECIDED TO DIVERT TO DTW TO BURN DOWN GAS TO GET BELOW LNDG WT. WE FINISHED THE LOSS OF 'A' SYS HYDS AND CONTINUED TO DTW. WE DECLARED AN EMER AND COORDINATED LNDG ON THE LONGEST RWY IN DTW. WE LOWERED THE FLAPS AND GEAR WITH THE ALTERNATE SYS AND LANDED IN DTW. I TAXIED CLR OF THE RWY AND STOPPED AND CALLED MAINT TO TOW THE ACFT TO THE GATE.

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.