Mechanic reports on an A119 helicopter diverting after a number 2 hydraulic system failure.

Attributes
ACN	807615
Time
Date	200810
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 0
Aircraft 1
Operator	common carrier : charter
Make Model Name	Agusta Undifferentiated or Other Model
Operating Under FAR Part	Part 135
Flight Phase	ground : maintenance
Person 1
Affiliation	company : charter other
Function	maintenance : technician
Qualification	technician : airframe technician : inspection authority technician : powerplant
Experience	maintenance lead technician : 5 maintenance repairman : 5 maintenance technician : 20
ASRS Report	807615
Person 2
Affiliation	company : charter
Function	flight crew : single pilot
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Aircraft X was returning to the airport after delivering a patient to a hospital. During the return flight the pilot observed a #2 hydraulic system fail light. The pilot landed at the nearest airfield without incident. A mechanic was dispatched immediately finding that the #2 hydraulic pump shaft was sheared. The hydraulic pump was replaced and the aircraft was returned to service the aircraft then return without any additional difficulties.

Original NASA ASRS Text

Title: MECHANIC REPORTS ON AN A119 HELICOPTER DIVERTING AFTER A NUMBER 2 HYDRAULIC SYSTEM FAILURE.

Narrative: ACFT X WAS RETURNING TO THE ARPT AFTER DELIVERING A PATIENT TO A HOSPITAL. DURING THE RETURN FLT THE PLT OBSERVED A #2 HYD SYS FAIL LIGHT. THE PLT LANDED AT THE NEAREST AIRFIELD WITHOUT INCIDENT. A MECH WAS DISPATCHED IMMEDIATELY FINDING THAT THE #2 HYD PUMP SHAFT WAS SHEARED. THE HYD PUMP WAS REPLACED AND THE ACFT WAS RETURNED TO SVC THE ACFT THEN RETURN WITHOUT ANY ADDITIONAL DIFFICULTIES.

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.