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20050531011029I

Incident · Minor damage
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FAA incident report · Cirrus SR22 · Santa Monica, CA · May 31, 2005

FAA Aviation Safety Information Portal

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Date
May 31, 2005
Place
Santa Monica, CA
Airport
Santa Monica Municipal Airport
Phase of flight
Roll-Out (Fixed Wing)
Operating rules
General operating rules (Part 91)
Damage
Minor damage
Aircraft
N8156E
Reported as
Cirrus SR22
Reported engine
Continental TSIO470*
People aboard
2
Fatal injuries
0
Pilot’s flight hours
2,200 total1,500 in this make and model200 in the last 90 days
N8156ERegistration cancelled Dec 7, 2011 · Cirrus Design SR22S/N 0726 · Built 2003Airframe modelCirrus Design SR22Engine modelContinental TSIO-470 seriesReciprocating

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) The flight instructor stated that upon landing his student informed him that there was a problem with the brakes. The CFI took the controls and confirmed that the right brake was not operating properly. The CFI notified the tower of a brake failure at about mid-field. He attempted to stop the airplane on the runway, but upon realizing that he was approaching the end, he began maximum braking, which resulted in a wide arcing turn to the left, exiting the runway and striking a parked Cessna 210. The Cirrus SR-22 has a free castoring nose wheel, which makes a brake failure nearly impossible to control once the airplane has slowed to a speed below which aerodynamic controls are functional. The right brake caliper was inspected and found to be covered with brake fluid. The brake pads were removed and it was noted that the pads were worn down to the rivets. They were also wet with brake fluid. The brake caliper was disassembled. The hydraulic pistons were removed and the "o" ring seals were inspected. The "o" rings on both pistons were completely flat. It appeared that the pistons were extending out to the rough outer edge of the brake cylinder, allowing fluid to leak past the seal.

As the FAA filed it

(-23) THE FLIGHT INSTRUCTOR STATED THAT UPON LANDING HIS STUDENT INFORMED HIM THAT THERE WAS A PROBLEM WITH THE BRAKES. THE CFI TOOK THE CONTROLS AND CONFIRMED THAT THE RIGHT BRAKE WAS NOT OPERATING PROPERLY. THE CFI NOTIFIED THE TOWER OF A BRAKE FAILURE AT ABOUT MID-FIELD. HE ATTEMPTED TO STOP THE AIRPLANE ON THE RUNWAY, BUT UPON REALIZING THAT HE WAS APPROACHING THE END, HE BEGAN MAXIMUM BRAKING, WHICH RESULTED IN A WIDE ARCING TURN TO THE LEFT, EXITING THE RUNWAY AND STRIKING A PARKED CESSNA 210. THE CIRRUS SR-22 HAS A FREE CASTORING NOSE WHEEL, WHICH MAKES A BRAKE FAILURE NEARLY IMPOSSIBLE TO CONTROL ONCE THE AIRPLANE HAS SLOWED TO A SPEED BELOW WHICH AERODYNAMIC CONTROLS ARE FUNCTIONAL. THE RIGHT BRAKE CALIPER WAS INSPECTED AND FOUND TO BE COVERED WITH BRAKE FLUID. THE BRAKE PADS WERE REMOVED AND IT WAS NOTED THAT THE PADS WERE WORN DOWN TO THE RIVETS. THEY WERE ALSO WET WITH BRAKE FLUID. THE BRAKE CALIPER WAS DISASSEMBLED. THE HYDRAULIC PISTONS WERE REMOVED AND THE "O" RING SEALS WERE INSPECTED. THE "O" RINGS ON BOTH PISTONS WERE COMPLETELY FLAT. IT APPEARED THAT THE PISTONS WERE EXTENDING OUT TO THE ROUGH OUTER EDGE OF THE BRAKE CYLINDER, ALLOWING FLUID TO LEAK PAST THE SEAL.