A B727-200 in cruise declared an emergency due to loss of #2 engine oil quantity and pressure caused by the engine driven fuel pump drive seals not installed during pump replacement.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	442636
Time
Date	199906
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : inspector
Qualification	technician : inspection authority technician : airframe technician : powerplant
Experience	maintenance technician : 29
ASRS Report	442636
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : #2 engine oil oty indicator
Resolutory Action	flight crew : landed in emergency condition flight crew : declared emergency
Consequence	other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : inspection performance deficiency : testing performance deficiency : installation
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

On jun/xa/99 I was assigned to do a final inspection of the installation of the engine driven fuel pump. I witnessed all seals installed prior to the mechanic installing the pump also. After pump was replaced and inspected, engine was run for several mins at idle and high power with no leaks detected. Aircraft was returned to service. Aircraft was dispatched on a ferry flight to XXX. 1 hour 20 mins after departing, the engine had a loss of oil and the crew did an in-flight shutdown of that engine (#2). On later removal of the replaced pump, the removing mechanics claimed that no pump driven shaft o-rings were noticed.

Original NASA ASRS Text

Title: A B727-200 IN CRUISE DECLARED AN EMER DUE TO LOSS OF #2 ENG OIL QUANTITY AND PRESSURE CAUSED BY THE ENG DRIVEN FUEL PUMP DRIVE SEALS NOT INSTALLED DURING PUMP REPLACEMENT.

Narrative: ON JUN/XA/99 I WAS ASSIGNED TO DO A FINAL INSPECTION OF THE INSTALLATION OF THE ENG DRIVEN FUEL PUMP. I WITNESSED ALL SEALS INSTALLED PRIOR TO THE MECH INSTALLING THE PUMP ALSO. AFTER PUMP WAS REPLACED AND INSPECTED, ENG WAS RUN FOR SEVERAL MINS AT IDLE AND HIGH PWR WITH NO LEAKS DETECTED. ACFT WAS RETURNED TO SVC. ACFT WAS DISPATCHED ON A FERRY FLT TO XXX. 1 HR 20 MINS AFTER DEPARTING, THE ENG HAD A LOSS OF OIL AND THE CREW DID AN INFLT SHUTDOWN OF THAT ENG (#2). ON LATER REMOVAL OF THE REPLACED PUMP, THE REMOVING MECHS CLAIMED THAT NO PUMP DRIVEN SHAFT O-RINGS WERE NOTICED.

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.