A BK117 pilot on a maintenance assessment flight encountered a chip warning in the number two engine...

Narrative:

While I was on a repair station maintenance test flight for avionics verification I experienced an engine two chip warning 3 minutes after departure. No secondaries. I attempted three times; unsuccessfully; to burn the chip; then turned back to the airport and adjusted flight controls to establish oei [one engine inoperative] flight conditions; retarded number 2 power lever to idle; trimmed nr [rotor RPM] to 100% and was cleared by tower to land runway 28; thence direct to the ramp. I did not declare an emergency. Established oei landing profile to runway 28 and shut down the number 2 engine when over the runway. Performed run-on landing to the grass between taxiway a and runway 28. No injuries to crew and passengers or damage to aircraft. Repair station personnel moved aircraft back to hangar for required follow-on maintenance. No chips or fuzz found on the chip detector plugs.

Original NASA ASRS Text

Title: A BK117 pilot on a maintenance assessment flight encountered a chip warning in the Number Two Engine. He performed appropriate preparatory procedures; shut down the engine and performed a run-on landing on the grass between the runway and parallel taxiway at the departure airport.

Narrative: While I was on a repair station maintenance test flight for avionics verification I experienced an Engine Two Chip warning 3 minutes after departure. No secondaries. I attempted three times; unsuccessfully; to burn the chip; then turned back to the airport and adjusted flight controls to establish OEI [One Engine Inoperative] flight conditions; retarded Number 2 power lever to idle; trimmed NR [Rotor RPM] to 100% and was cleared by Tower to land Runway 28; thence direct to the ramp. I did not declare an emergency. Established OEI landing profile to Runway 28 and shut down the Number 2 Engine when over the runway. Performed run-on landing to the grass between Taxiway A and Runway 28. No injuries to crew and passengers or damage to aircraft. Repair station personnel moved aircraft back to hangar for required follow-on maintenance. No chips or fuzz found on the chip detector plugs.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1095784
Time
Date	201306
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Helicopter
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	None
Component
Aircraft Component	Turbine Engine
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Commercial
Events
Anomaly	Aircraft Equipment Problem Less Severe Ground Event / Encounter Other / Unknown

A BK117 pilot on a maintenance assessment flight encountered a chip warning in the number two engine. He performed appropriate preparatory procedures; shut down the engine and performed a run-on landing on the grass between the runway and parallel taxiway at the departure airport.