Maintenance Powerplant; Maintenance Airframe; Maintenance Avionics
Maintenance Technician 25
Communication Breakdown; Confusion
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
MEL; Logbook Entry; Human Factors; Aircraft
When performing Number 2 Engine Oil Supply Tube Flow Check on Number 6 bearing; the reading on the pressure gauge of the test equipment read between 30.5 and 31 psi. I tighten fitting on Tester to oil supply tube and reading was then right at 31 psi. The Task Card read; if 27 psi or less OK for service. If gauge read 27- 31 psi; I could defer; if pressure above 31 psi; item had to be repaired prior to the next flight. I conferred with the Lead Mechanic and he in turn called the Maintenance Co-coordinator; explained what we had and Maintenance Co-coordinator said we could defer. I followed the process to defer item for five flight cycles; stating in Log sheet the pressure was at 31 psi. Two days later; after aircraft had made several flights and was out of the country; someone was reviewing the Maintenance computer list of log inputs to clear items and in their judgment; felt that the aircraft was out of compliance with the statement of 31 psi that was stated on the Log sheet. I was notified of the maintenance event.
Several flights after performing a Number 6 bearing Oil Supply Tube Flow Check on a GE CF6-80C2; Number Two engine; an Aircraft Maintenance Technician (AMT) was informed the MEL deferral he created for the borderline high pressure oil reading was out of compliance.