SR22 pilot reports a brake fire after a very long taxi to the run up pad. A dragging brake was thoug...

Attributes
ACN	929542
Time
Date	201101
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	SR22
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Flight Plan	IFR
Component
Aircraft Component	Brake System
Person 1
Function	Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 4750 Flight Crew Type 350
Events
Anomaly	Aircraft Equipment Problem Critical Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

Plane was out over night (no room in hangar) and thus cold soaked in january. Taxi felt normal; plane usually requires a little brake pressure to taxi straight when in a cross wind situation. Upon reaching runway; a run up was begun. As the engine RPM increased the plane moved forward slightly. The right brake felt stiff so extra force was applied to possibly loosen it up. The right brake popped and went to the floor. Then the plane pivoted on its left tire and turned 180 degrees. As the plane turned due to loss of the right brake the engine was shut down to keep from moving any further. Tower was notified of situation. Then smoke was seen from under the right wing. Again; tower was notified. Both occupants then exited the secured airplane. The pilot used the on board fire extinguisher and tried to subdue the flames to no avail. A guess as to why this happened; the right brake froze due to the sub freezing temperature causing the pads to rub the brake rotor. Due to the extended taxi (over a mile) the rotor got extremely hot and failed; causing the fire.

Original NASA ASRS Text

Title: SR22 pilot reports a brake fire after a very long taxi to the run up pad. A dragging brake was thought to be responsible as the aircraft was parked outside in January and was cold soaked.

Narrative: Plane was out over night (no room in hangar) and thus cold soaked in January. Taxi felt normal; plane usually requires a little brake pressure to taxi straight when in a cross wind situation. Upon reaching runway; a run up was begun. As the engine RPM increased the plane moved forward slightly. The right brake felt stiff so extra force was applied to possibly loosen it up. The right brake popped and went to the floor. Then the plane pivoted on its left tire and turned 180 degrees. As the plane turned due to loss of the right brake the engine was shut down to keep from moving any further. Tower was notified of situation. Then smoke was seen from under the right wing. Again; Tower was notified. Both occupants then exited the secured airplane. The pilot used the on board fire extinguisher and tried to subdue the flames to no avail. A guess as to why this happened; the right brake froze due to the sub freezing temperature causing the pads to rub the brake rotor. Due to the extended taxi (over a mile) the rotor got extremely hot and failed; causing the fire.

Data retrieved from NASA's ASRS site as of April 2012 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.

SR22 pilot reports a brake fire after a very long taxi to the run up pad. A dragging brake was thought to be responsible as the aircraft was parked outside in january and was cold soaked.