A canadair CL65 in descent at 11000 ft declared an emergency and shut down #2 engine due to low oil ...

Attributes
ACN	425241
Time
Date	199901
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : clt
State Reference	NC
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	descent other landing other other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi
Experience	flight time last 90 days : 210 flight time total : 9200 flight time type : 750
ASRS Report	425241
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other

Narrative:

Air carrier flight zyyz departed toronto (yyz) at XA15 on jan/xa/99 en route to clt. About 40 mi from clt we started getting intermittent low oil pressure indications. I reviewed the procedures and informed ATC (ZTL) that we needed expeditious handling to clt. About 25 mi from clt the low oil pressure readings became constant (less than 25 psi) and a precautionary engine shutdown on the #2 engine was completed. I declared an emergency and the flight landed without incident. Cause: the aircraft (xyz) had had a hydraulic pump on the #2 engine replaced in ZZZ about 5 flight hours prior to this incident. The pump was installed poorly. A seal on the pump shaft had been nicked causing the engine to leak oil internally and vent it overboard. The aircraft uses general electric CF34-3b1 engines and none of our a&P's have had any training on this engine. Callback conversation with reporter revealed the following information: the reporter stated this right engine driven hydraulic pump shaft was installed 5 hours flight time prior to this failure. The reporter said there must be some installation problem when changing this seal because another failure he knew of was a damaged seal also. The reporter stated it was not a massive oil leak but just a steady dripping.

Original NASA ASRS Text

Title: A CANADAIR CL65 IN DSCNT AT 11000 FT DECLARED AN EMER AND SHUT DOWN #2 ENG DUE TO LOW OIL PRESSURE WARNING AND INDICATION CAUSED BY THE LOSS OF OIL FROM A CUT SEAL ON THE ENG DRIVEN HYD PUMP DRIVE SHAFT.

Narrative: ACR FLT ZYYZ DEPARTED TORONTO (YYZ) AT XA15 ON JAN/XA/99 ENRTE TO CLT. ABOUT 40 MI FROM CLT WE STARTED GETTING INTERMITTENT LOW OIL PRESSURE INDICATIONS. I REVIEWED THE PROCS AND INFORMED ATC (ZTL) THAT WE NEEDED EXPEDITIOUS HANDLING TO CLT. ABOUT 25 MI FROM CLT THE LOW OIL PRESSURE READINGS BECAME CONSTANT (LESS THAN 25 PSI) AND A PRECAUTIONARY ENG SHUTDOWN ON THE #2 ENG WAS COMPLETED. I DECLARED AN EMER AND THE FLT LANDED WITHOUT INCIDENT. CAUSE: THE ACFT (XYZ) HAD HAD A HYD PUMP ON THE #2 ENG REPLACED IN ZZZ ABOUT 5 FLT HRS PRIOR TO THIS INCIDENT. THE PUMP WAS INSTALLED POORLY. A SEAL ON THE PUMP SHAFT HAD BEEN NICKED CAUSING THE ENG TO LEAK OIL INTERNALLY AND VENT IT OVERBOARD. THE ACFT USES GENERAL ELECTRIC CF34-3B1 ENGS AND NONE OF OUR A&P'S HAVE HAD ANY TRAINING ON THIS ENG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THIS R ENG DRIVEN HYD PUMP SHAFT WAS INSTALLED 5 HRS FLT TIME PRIOR TO THIS FAILURE. THE RPTR SAID THERE MUST BE SOME INSTALLATION PROB WHEN CHANGING THIS SEAL BECAUSE ANOTHER FAILURE HE KNEW OF WAS A DAMAGED SEAL ALSO. THE RPTR STATED IT WAS NOT A MASSIVE OIL LEAK BUT JUST A STEADY DRIPPING.

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.

A canadair CL65 in descent at 11000 ft declared an emergency and shut down #2 engine due to low oil pressure warning and indication caused by the loss of oil from a cut seal on the engine driven hydraulic pump drive shaft.