B767 captain reported that a compressor stall during climb resulted in a return to the departure air...

Narrative:

I was pilot flying; during climb out at approximately 5;000 ft.; loud banging noise; sounded like compressor stall; autopilot engaged; yawing; left engine N1 reduced to approximately 30%; left engine fuel flow 4000; right engine normal; another bang; yawing; levelled off at 7;000 ft. Left engine went back to normal indications; no yaw. Advised ATC of mechanical issue. EICAS message left eng hpsov. First officer ran QRH; I continued flying. We concurred that return to ZZZ was safest course of action. 2 jumpseaters on board 767 captains; (1 flex); sent message to [operations control] advising of maintenance issue & return to ZZZ. [We advised ATC] ; conducted ILS ; uneventful approach & landing. Met by emergency vehicles; uneventful taxi to ramp. Maintenance report: upon left engine stall inspection; found green harness at vbv actuator connector P124 shielding damaged; pneumatic controller bite test shows hpc fault and hpsov fault.

Original NASA ASRS Text

Title: B767 Captain reported that a compressor stall during climb resulted in a return to the departure airport.

Narrative: I was pilot flying; during climb out at approximately 5;000 ft.; loud banging noise; sounded like compressor stall; autopilot engaged; yawing; left engine N1 reduced to approximately 30%; left engine fuel flow 4000; right engine normal; another bang; yawing; levelled off at 7;000 ft. Left engine went back to normal indications; no yaw. Advised ATC of mechanical issue. EICAS message L eng HPSOV. First Officer Ran QRH; I continued flying. We concurred that return to ZZZ was safest course of action. 2 jumpseaters on board 767 Captains; (1 Flex); sent message to [Operations Control] advising of maintenance issue & return to ZZZ. [We advised ATC] ; conducted ILS ; uneventful approach & landing. Met by emergency vehicles; uneventful taxi to ramp. Maintenance report: Upon left engine stall inspection; found green harness at VBV actuator connector P124 shielding damaged; Pneumatic controller bite test shows HPC fault and HPSOV fault.

Data retrieved from NASA's ASRS site 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	1743013
Time
Date	202005
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Environment
Flight Conditions	Marginal
Light	Night
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Pneumatic Valve/Bleed Valve
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Less Severe

B767 captain reported that a compressor stall during climb resulted in a return to the departure airport.