DC8 flight crew has hydraulic failure and departs the runway while taxiing at msp.

Attributes
ACN	602598
Time
Date	200312
Day	Wed
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : msp.airport
State Reference	MN
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Weather Elements	Ice Snow
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	DC-8 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : atp pilot : multi engine
Experience	flight time last 90 days : 120 flight time total : 13000 flight time type : 10000
ASRS Report	602598
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical excursion : runway non adherence : published procedure other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft Weather
Primary Problem	Flight Crew Human Performance

Narrative:

While taxiing onto runway 30L, attempt to turn aircraft onto centerline became difficult with nosewheel steering. Aircraft seemed to be skidding on the ice. Aft center of gravity of 30.9% was perceived as reason for poor steering result. Differential thrust and braking was used to line up on centerline. Nosewheel was still not effective. Crew elected not to take off. Attempt to turn off on next taxiway proved difficult. With poor control and other commercial aircraft nearby, we elected to proceed down runway 30L and turn off on runway 22. Turn was accomplished with differential thrust and braking. After clear of runway 30L, flight engineer noticed that we had lost hydraulic quantity and pressure. Attempt was made to stop using brake accumulators with no results. Engine reversers were deployed yet no reverse thrust was obtained. Plane continued down the snow covered runway (with quartering tailwind at 350 degrees at 11 KTS). As aircraft drifted slowly off centerline to edge of runway (approximately 3-5 KTS), attempt was made to stow #1 and #2 reverser so engines #1 and #2 could be run up to stop drift off of runway. Reversers would not stow. Emergency air brake deployed but aircraft still continued to depart runway into adjacent field. No damage to aircraft or injury to crew members. Maintenance discovered broken hydraulic line to nosewheel steering.

Original NASA ASRS Text

Title: DC8 FLT CREW HAS HYD FAILURE AND DEPARTS THE RWY WHILE TAXIING AT MSP.

Narrative: WHILE TAXIING ONTO RWY 30L, ATTEMPT TO TURN ACFT ONTO CTRLINE BECAME DIFFICULT WITH NOSEWHEEL STEERING. ACFT SEEMED TO BE SKIDDING ON THE ICE. AFT CTR OF GRAVITY OF 30.9% WAS PERCEIVED AS REASON FOR POOR STEERING RESULT. DIFFERENTIAL THRUST AND BRAKING WAS USED TO LINE UP ON CTRLINE. NOSEWHEEL WAS STILL NOT EFFECTIVE. CREW ELECTED NOT TO TAKE OFF. ATTEMPT TO TURN OFF ON NEXT TXWY PROVED DIFFICULT. WITH POOR CTL AND OTHER COMMERCIAL ACFT NEARBY, WE ELECTED TO PROCEED DOWN RWY 30L AND TURN OFF ON RWY 22. TURN WAS ACCOMPLISHED WITH DIFFERENTIAL THRUST AND BRAKING. AFTER CLR OF RWY 30L, FE NOTICED THAT WE HAD LOST HYD QUANTITY AND PRESSURE. ATTEMPT WAS MADE TO STOP USING BRAKE ACCUMULATORS WITH NO RESULTS. ENG REVERSERS WERE DEPLOYED YET NO REVERSE THRUST WAS OBTAINED. PLANE CONTINUED DOWN THE SNOW COVERED RWY (WITH QUARTERING TAILWIND AT 350 DEGS AT 11 KTS). AS ACFT DRIFTED SLOWLY OFF CTRLINE TO EDGE OF RWY (APPROX 3-5 KTS), ATTEMPT WAS MADE TO STOW #1 AND #2 REVERSER SO ENGS #1 AND #2 COULD BE RUN UP TO STOP DRIFT OFF OF RWY. REVERSERS WOULD NOT STOW. EMER AIR BRAKE DEPLOYED BUT ACFT STILL CONTINUED TO DEPART RWY INTO ADJACENT FIELD. NO DAMAGE TO ACFT OR INJURY TO CREW MEMBERS. MAINT DISCOVERED BROKEN HYD LINE TO NOSEWHEEL STEERING.

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.