C172 pilots reported loosing rudder control and brakes during taxi.

Attributes
ACN	1631176
Time
Date	201903
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Flight Plan	None
Person 1
Function	Pilot Flying
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 84.91 Flight Crew Total 195.9
Person 2
Function	Pilot Not Flying
Experience	Flight Crew Last 90 Days 70 Flight Crew Total 181
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Taxiway

Narrative:

The plan was to fly to ZZZ - [pilot flying] and [pilot not flying] in right seat for time building. We did preflight. Before taxiing; I tested my brakes and they worked fine; no problem staying on centerline. [Pilot monitoring] did not test his brakes; as he was not PIC. I pressed on the left rudder to turn off of mike onto juliet to go to [runway] xxl and the plane did not respond. We were going straight instead of turning; so I added some left brake to help the turn. This is when I noticed we had no control over the rudders/break. There was no pressure on the break and the plane was not responding. I cut the power and tried the breaks and nothing happened. I tried steering the plane off to november; as at this point; I knew we would going to crash. Our right tire dipped into the ditch and took our plane into the main part of the grass. [Pilot not flying] then cut the mixture; and I called ground control and we were at a complete stop at that point.

Original NASA ASRS Text

Title: C172 pilots reported loosing rudder control and brakes during taxi.

Narrative: The plan was to fly to ZZZ - [Pilot Flying] and [Pilot Not Flying] in right seat for time building. We did preflight. Before taxiing; I tested my brakes and they worked fine; no problem staying on centerline. [Pilot Monitoring] did not test his brakes; as he was not PIC. I pressed on the left rudder to turn off of Mike onto Juliet to go to [Runway] XXL and the plane did not respond. We were going straight instead of turning; so I added some left brake to help the turn. This is when I noticed we had no control over the rudders/break. There was no pressure on the break and the plane was not responding. I cut the power and tried the breaks and nothing happened. I tried steering the plane off to November; as at this point; I knew we would going to crash. Our right tire dipped into the ditch and took our plane into the main part of the grass. [Pilot Not Flying] then cut the mixture; and I called Ground Control and we were at a complete stop at that point.

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.