Hydraulic leak. SOP followed.

Attributes
ACN	268042
Time
Date	199404
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : avp
State Reference	PA
Altitude	msl bound lower : 37000 msl bound upper : 37000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny tower : bna
Operator	common carrier : air carrier
Make Model Name	L-1011 Tri-Star All Series
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute airway : zny
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 20000 flight time type : 1100
ASRS Report	268042
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : unable
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I noticed that the quality of the hydraulic system C was down to 1/4 of being full. We went through the system fluid checklist. The loss stopped. We requested to land on runway 22L at jfk instead of runway 13L that was being used at that time. I did not declare an emergency. This was precautionary, because I had more time to lower the gear mechanically and go through all the checklists while being vectored to runway 22L than I would have had for runway 13L. The approach and landing were uneventful. I taxied off the runway using brakes, because I had no nosewheel steering. Then the aircraft was towed to the gate. We had a hydraulic leak in the leading edge devices area.

Original NASA ASRS Text

Title: HYD LEAK. SOP FOLLOWED.

Narrative: I NOTICED THAT THE QUALITY OF THE HYD SYS C WAS DOWN TO 1/4 OF BEING FULL. WE WENT THROUGH THE SYS FLUID CHKLIST. THE LOSS STOPPED. WE REQUESTED TO LAND ON RWY 22L AT JFK INSTEAD OF RWY 13L THAT WAS BEING USED AT THAT TIME. I DID NOT DECLARE AN EMER. THIS WAS PRECAUTIONARY, BECAUSE I HAD MORE TIME TO LOWER THE GEAR MECHANICALLY AND GO THROUGH ALL THE CHKLISTS WHILE BEING VECTORED TO RWY 22L THAN I WOULD HAVE HAD FOR RWY 13L. THE APCH AND LNDG WERE UNEVENTFUL. I TAXIED OFF THE RWY USING BRAKES, BECAUSE I HAD NO NOSEWHEEL STEERING. THEN THE ACFT WAS TOWED TO THE GATE. WE HAD A HYD LEAK IN THE LEADING EDGE DEVICES AREA.

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.