C414 pilot reported losing control of aircraft and going off runway into grass.

Attributes
ACN	1661470
Time
Date	201906
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Chancellor 414A / C414
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Route In Use	Vectors Direct Oceanic
Flight Plan	IFR
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Commercial
Experience	Flight Crew Last 90 Days 117 Flight Crew Total 1270 Flight Crew Type 11
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Runway

Narrative:

We received the taxi instruction to taxi runway 25 via D. During taxi to runway 25 at ZZZ airport via taxiway 25; right before the runway hold short markings I saw the aircraft not steering to the left and going off the taxiway centerline. Since it was my second IOE flight; I had an observer captain on board on the right seat. When I saw the aircraft going off the centerline; I wanted the aircraft to stop but couldn't get enough response and called brakes; brakes; brakes. The observer captain applied the brakes and the airplane had more than 90 degree turn due to locked up right main gear brake resulted going off the runway to the grass and nose gear to collapse. Both propellers were struck to the ground. Nobody was hurt. During FAA investigations they couldn't find mechanical problems with the aircraft. Even I had a PIC on board for my IOE they blamed me for the incident because I was sitting on the left seat which makes no sense because CFI's also sit on the right seat but they are the PIC when they are flying with their students no matter what. Also right after I called brakes; brakes; brakes; it was him taking the controls and applied hard brakes causing right main gear lock up and veer into the grass.

Original NASA ASRS Text

Title: C414 pilot reported losing control of aircraft and going off runway into grass.

Narrative: We received the taxi instruction to taxi Runway 25 via D. During taxi to Runway 25 at ZZZ airport via Taxiway 25; right before the runway hold short markings I saw the aircraft not steering to the left and going off the taxiway centerline. Since it was my second IOE flight; I had an Observer Captain on board on the right seat. When I saw the aircraft going off the centerline; I wanted the aircraft to stop but couldn't get enough response and called Brakes; Brakes; Brakes. The Observer Captain applied the brakes and the airplane had more than 90 degree turn due to locked up right main gear brake resulted going off the runway to the grass and nose gear to collapse. Both propellers were struck to the ground. Nobody was hurt. During FAA investigations they couldn't find mechanical problems with the aircraft. Even I had a PIC on board for my IOE they blamed me for the incident because I was sitting on the left seat which makes no sense because CFI's also sit on the right seat but they are the PIC when they are flying with their students no matter what. Also right after I called Brakes; Brakes; Brakes; it was him taking the controls and applied hard brakes causing right main gear lock up and veer into the grass.

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.