Runway excursion after landing. Aeronca champ runs into ditch, aircraft damaged.

Attributes
ACN	305963
Time
Date	199505
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ffz
State Reference	AZ
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Other
Operating Under FAR Part	Part 91
Flight Phase	ground other : taxi landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
ASRS Report	305963
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other anomaly other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

In left closed traffic (runway 4L) for touch-and-goes. 3 lndgs had been completed. Traffic seemed heavy so I decided to land (#4), taxi back, and depart to the northeast. After landing I was taxiing down runway 4L towards the midfield taxiway. Upon braking (to further slow down for the left turn onto the taxiway), I noticed that only the left brake must have been effective, because the airplane veered slightly to the left. I tried to compensate by giving it right rudder, then full right brake -- nothing happened. There was no right brake. By this time the airplane had left the runway onto the dirt. (I couldn't have been going more than 5-10 mph.) there seemed to be lots of room in the dirt so I thought I'd let the airplane roll to a stop by itself, all the time turning to the left. I was really pushing on the right brake, still nothing happened. I saw the ditch (1 1/2 - 2 ft deep) about 2 or 3 seconds before impact. The right main gear dropped in and the propeller hit the dirt. I immediately shut off the fuel and all electrical, then exited. No injuries to me. Airplane right main was bent back. Propeller was ruined and the left main looked a little bent. Right wingtip had a little scrape on the underside. If I had seen the small ditch I may have been able to intentionally ground loop it to the left.

Original NASA ASRS Text

Title: RWY EXCURSION AFTER LNDG. AERONCA CHAMP RUNS INTO DITCH, ACFT DAMAGED.

Narrative: IN L CLOSED TFC (RWY 4L) FOR TOUCH-AND-GOES. 3 LNDGS HAD BEEN COMPLETED. TFC SEEMED HVY SO I DECIDED TO LAND (#4), TAXI BACK, AND DEPART TO THE NE. AFTER LNDG I WAS TAXIING DOWN RWY 4L TOWARDS THE MIDFIELD TXWY. UPON BRAKING (TO FURTHER SLOW DOWN FOR THE L TURN ONTO THE TXWY), I NOTICED THAT ONLY THE L BRAKE MUST HAVE BEEN EFFECTIVE, BECAUSE THE AIRPLANE VEERED SLIGHTLY TO THE L. I TRIED TO COMPENSATE BY GIVING IT R RUDDER, THEN FULL R BRAKE -- NOTHING HAPPENED. THERE WAS NO R BRAKE. BY THIS TIME THE AIRPLANE HAD LEFT THE RWY ONTO THE DIRT. (I COULDN'T HAVE BEEN GOING MORE THAN 5-10 MPH.) THERE SEEMED TO BE LOTS OF ROOM IN THE DIRT SO I THOUGHT I'D LET THE AIRPLANE ROLL TO A STOP BY ITSELF, ALL THE TIME TURNING TO THE L. I WAS REALLY PUSHING ON THE R BRAKE, STILL NOTHING HAPPENED. I SAW THE DITCH (1 1/2 - 2 FT DEEP) ABOUT 2 OR 3 SECONDS BEFORE IMPACT. THE R MAIN GEAR DROPPED IN AND THE PROP HIT THE DIRT. I IMMEDIATELY SHUT OFF THE FUEL AND ALL ELECTRICAL, THEN EXITED. NO INJURIES TO ME. AIRPLANE R MAIN WAS BENT BACK. PROP WAS RUINED AND THE L MAIN LOOKED A LITTLE BENT. R WINGTIP HAD A LITTLE SCRAPE ON THE UNDERSIDE. IF I HAD SEEN THE SMALL DITCH I MAY HAVE BEEN ABLE TO INTENTIONALLY GND LOOP IT TO THE L.

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.