Air carrier medium large transport lost hydraulic system 'a' at cruise altitude. Diverted to alterna...

Attributes
ACN	169470
Time
Date	199101
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pit
State Reference	PA
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Light	Night
Aircraft 1
Controlling Facilities	artcc : zob
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 6000 flight time type : 200
ASRS Report	169470
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

While cruising overhead pittsburgh on a flight from lga to ind we lost hydraulic system #1. We diverted to pit, landed and were towed to the gate. We followed the checklists and I feel made no known errors.

Original NASA ASRS Text

Title: ACR MLG LOST HYDRAULIC SYSTEM 'A' AT CRUISE ALT. DIVERTED TO ALTERNATE.

Narrative: WHILE CRUISING OVERHEAD PITTSBURGH ON A FLT FROM LGA TO IND WE LOST HYD SYS #1. WE DIVERTED TO PIT, LANDED AND WERE TOWED TO THE GATE. WE FOLLOWED THE CHKLISTS AND I FEEL MADE NO KNOWN ERRORS.

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.

Air carrier medium large transport lost hydraulic system 'a' at cruise altitude. Diverted to alternate.