A PA34-200 pilot runs off the side of the runway at iso, nc, when his brakes get spongy.

Attributes
ACN	434863
Time
Date	199904
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iso.airport
State Reference	NC
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-34-200T Turbo Seneca II
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 30 flight time total : 470 flight time type : 55
ASRS Report	434863
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical excursion : runway other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

My approach and touchdown was stable, however, after touching down, I applied the brakes which initially held and then the right brake became spongy. Then the left brake became spongy and the airplane departed the runway on the right side. I controlled the airplane with the rudders to avoid hitting the runway lights and then re-entered the runway. The airplane did a ground loop, but there was no damage to any components on the airplane.

Original NASA ASRS Text

Title: A PA34-200 PLT RUNS OFF THE SIDE OF THE RWY AT ISO, NC, WHEN HIS BRAKES GET SPONGY.

Narrative: MY APCH AND TOUCHDOWN WAS STABLE, HOWEVER, AFTER TOUCHING DOWN, I APPLIED THE BRAKES WHICH INITIALLY HELD AND THEN THE R BRAKE BECAME SPONGY. THEN THE L BRAKE BECAME SPONGY AND THE AIRPLANE DEPARTED THE RWY ON THE R SIDE. I CONTROLLED THE AIRPLANE WITH THE RUDDERS TO AVOID HITTING THE RWY LIGHTS AND THEN RE-ENTERED THE RWY. THE AIRPLANE DID A GND LOOP, BUT THERE WAS NO DAMAGE TO ANY COMPONENTS ON THE AIRPLANE.

Data retrieved from NASA's ASRS site as of July 2007 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.