Rv-4 pilot reported a brake failure and taxiway excursion.

Attributes
ACN	1633852
Time
Date	201904
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	RV-4
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Flight Plan	None
Component
Aircraft Component	Brake System
Person 1
Function	Single Pilot
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 1050 Flight Crew Type 50
Events
Anomaly	Aircraft Equipment Problem Less Severe Ground Event / Encounter Person / Animal / Bird Ground Event / Encounter Loss Of Aircraft Control Ground Event / Encounter Aircraft Ground Excursion Taxiway

Narrative:

After landing; I was taxiing to parking. The left hand brake line failed at the caliper. A direct tailwind caught right side of rudder and aircraft departed taxiway to the right. The right wing; about 1 foot inboard of tip hit pedestrian in the backside knocking him down. The force of the impact caused the aircraft to pivot sharply. The vertical tail surface struck [an aircraft] putting an approximate 2 inch dent around mid-span at leading edge. The nose of the RV4 came to rest under wing of [a second aircraft] without contacting it. Had I not shut off the RV4 engine; the prop would have struck the [second aircraft's] wing.

Original NASA ASRS Text

Title: RV-4 pilot reported a brake failure and taxiway excursion.

Narrative: After landing; I was taxiing to parking. The left hand brake line failed at the caliper. A direct tailwind caught right side of rudder and aircraft departed taxiway to the right. The right wing; about 1 foot inboard of tip hit pedestrian in the backside knocking him down. The force of the impact caused the aircraft to pivot sharply. The vertical tail surface struck [an aircraft] putting an approximate 2 inch dent around mid-span at leading edge. The nose of the RV4 came to rest under wing of [a second aircraft] without contacting it. Had I not shut off the RV4 engine; the prop would have struck the [second aircraft's] wing.

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.