MBB-BK 117 All Series
Maintenance Powerplant; Maintenance Inspection Authority; Maintenance Airframe
Communication Breakdown
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action; General Flight Cancelled / Delayed
Aircraft; Human Factors; Logbook Entry; Procedure
We had performed scheduled maintenance on a BK117C2. We also performed troubleshooting of a fuel quantity fluctuation issue. 2 main tank fuel probes were removed and inspected; one was replaced. After the fuel probes were reinstalled the aircraft was moved outside for refueling and leak checks. During this time I was doing all the log book entries that were told to me. I did not enter any fuel probe entries as I wasn't performing the MX and didn't have any paperwork at that time. As time went on we got in a hurry to return the aircraft to service and none of the fuel probe work was documented by myself or the mechanic that performed the MX. The aircraft was returned to service without the correct paperwork and flew back to [the] hospital at ZZZ where it is based. I received a call from one of the mechanics asking if the panels had been reinstalled and I told him that I didn't know as I didn't perform the maintenance. It was then that we discovered that the panels were in fact not reinstalled. I immediately called my supervisor and reported the undocumented maintenance and we took the aircraft back out of service and sent mechanics to reinstall the panels and complete the paperwork correctly. I believe that we were rushing maintenance to get the aircraft in service and crucial steps were missed.Perform a more detailed passover between mechanics; Communicate better between Mechanics.
[Report narrative contained no additional information.]
Technicians reported log book entries were not made before returning the aircraft to service after scheduled maintenance.