<< >> NASA ASRS Report 807774, October 2008

B777-200 flight crew on approach; after lowering the landing gear; loses all center system hydraulic quantity. Approach continued and an uneventful tow to the gate followed.

Attributes
ACN	807774
Time
Date	200810
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 2000
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 17000 flight time type : 2800
ASRS Report	807774
Events
Anomaly	aircraft equipment problem : critical
Resolutory Action	none taken : anomaly accepted
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

We lowered the landing gear at approximately 2000 ft. After gear and flaps were fully extended; all center hydraulic system fluid quantity was lost. After careful deliberation; I decided that continuing the approach and landing was the safest course of action. After a normal touchdown and rollout; I found the nosewheel steering ineffective. I used differential braking and power to exit the runway. I stopped the aircraft on the taxiway and requested to be towed to the gate. We parked the airplane; and went downstairs and discovered a hole in the nosewheel steering hydraulic line.

Related reports:

• B757 captain experiences a left hydraulic system failure dur...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: B777-200 FLT CREW ON APCH; AFTER LOWERING THE LANDING GEAR; LOSES ALL CENTER SYSTEM HYDRAULIC QUANTITY. APCH CONTINUED AND AN UNEVENTFUL TOW TO THE GATE FOLLOWED.

Narrative: WE LOWERED THE LNDG GEAR AT APPROX 2000 FT. AFTER GEAR AND FLAPS WERE FULLY EXTENDED; ALL CTR HYD SYS FLUID QUANTITY WAS LOST. AFTER CAREFUL DELIBERATION; I DECIDED THAT CONTINUING THE APCH AND LNDG WAS THE SAFEST COURSE OF ACTION. AFTER A NORMAL TOUCHDOWN AND ROLLOUT; I FOUND THE NOSEWHEEL STEERING INEFFECTIVE. I USED DIFFERENTIAL BRAKING AND PWR TO EXIT THE RWY. I STOPPED THE ACFT ON THE TXWY AND REQUESTED TO BE TOWED TO THE GATE. WE PARKED THE AIRPLANE; AND WENT DOWNSTAIRS AND DISCOVERED A HOLE IN THE NOSEWHEEL STEERING HYD LINE.

Data retrieved from NASA's ASRS site as of May 2009 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.