Reporter and flight instructor ran off side of runway on landing. Runway excursion.

Attributes
ACN	299289
Time
Date	199503
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : amn
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : private
Experience	flight time last 90 days : 60 flight time total : 155 flight time type : 60
ASRS Report	299289
Person 2
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : instrument
Experience	flight time last 90 days : 141 flight time total : 891 flight time type : 247
ASRS Report	299726
Events
Anomaly	aircraft equipment problem : critical other anomaly other anomaly other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Everything properly set up for a safe landing, our airspeed was 50-55 KTS on touchdown. As soon as the aircraft touched down, it began to pull sharply to the left, even though right brake was fully applied. The airplane was already off the runway when my instructor had full control. The ground was extremely soft and as the nosewheel dug into the ground, the propeller also dug into the ground. The cause of this incident is undoubtedly a problem with the brake, the airplane was on the centerline upon touchdown and all possible actions were taken to complete a safe landing. Supplemental information from acn 299726: after a low approach (NDB-gamn) the private pilot receiving instrument instruction, began the sdf-9 (amn). The approach proceeded without incident. After flying the approach to minimums the landing was attempted. At approximately the halfway point of the runway the cessna 172 main gear touched down within 7 ft of the centerline on the south side (right). (5000 ft long, 75 ft wide, hard surface). Private pilot had the correct crosswind inputs applied. Upon taking control of the aircraft, I applied right brake strongly. The braking action combined with right aileron was not effective in stopping the left turn. The aircraft crossed off the runway, where the ground sloped down and to the left (north) for drainage. As the aircraft proceeded down the slope the nosewheel began to dig into the soft ground. With the aircraft nosewheel digging in and the aircraft banked slightly to the left (from the slope), the propeller struck the ground along with the left wingtip. The aircraft stopped with the nosewheel dug into the ground. I believe the cause of the accident was a stuck left brake and/or the private pilot (manipulator of the controls) landed with the left brake on. The aircraft would not have struck the ground (propeller-wingtip) if the ground was harder. To avoid the accident should have been kept on the runway. In my opinion this was impossible with the time/space and stuck brake working against me.

Original NASA ASRS Text

Title: RPTR AND FLT INSTRUCTOR RAN OFF SIDE OF RWY ON LNDG. RWY EXCURSION.

Narrative: EVERYTHING PROPERLY SET UP FOR A SAFE LNDG, OUR AIRSPD WAS 50-55 KTS ON TOUCHDOWN. AS SOON AS THE ACFT TOUCHED DOWN, IT BEGAN TO PULL SHARPLY TO THE L, EVEN THOUGH R BRAKE WAS FULLY APPLIED. THE AIRPLANE WAS ALREADY OFF THE RWY WHEN MY INSTRUCTOR HAD FULL CTL. THE GND WAS EXTREMELY SOFT AND AS THE NOSEWHEEL DUG INTO THE GND, THE PROP ALSO DUG INTO THE GND. THE CAUSE OF THIS INCIDENT IS UNDOUBTEDLY A PROB WITH THE BRAKE, THE AIRPLANE WAS ON THE CTRLINE UPON TOUCHDOWN AND ALL POSSIBLE ACTIONS WERE TAKEN TO COMPLETE A SAFE LNDG. SUPPLEMENTAL INFO FROM ACN 299726: AFTER A LOW APCH (NDB-GAMN) THE PVT PLT RECEIVING INSTRUMENT INSTRUCTION, BEGAN THE SDF-9 (AMN). THE APCH PROCEEDED WITHOUT INCIDENT. AFTER FLYING THE APCH TO MINIMUMS THE LNDG WAS ATTEMPTED. AT APPROX THE HALFWAY POINT OF THE RWY THE CESSNA 172 MAIN GEAR TOUCHED DOWN WITHIN 7 FT OF THE CTRLINE ON THE S SIDE (R). (5000 FT LONG, 75 FT WIDE, HARD SURFACE). PVT PLT HAD THE CORRECT XWIND INPUTS APPLIED. UPON TAKING CTL OF THE ACFT, I APPLIED R BRAKE STRONGLY. THE BRAKING ACTION COMBINED WITH R AILERON WAS NOT EFFECTIVE IN STOPPING THE L TURN. THE ACFT CROSSED OFF THE RWY, WHERE THE GND SLOPED DOWN AND TO THE L (N) FOR DRAINAGE. AS THE ACFT PROCEEDED DOWN THE SLOPE THE NOSEWHEEL BEGAN TO DIG INTO THE SOFT GND. WITH THE ACFT NOSEWHEEL DIGGING IN AND THE ACFT BANKED SLIGHTLY TO THE L (FROM THE SLOPE), THE PROP STRUCK THE GND ALONG WITH THE L WINGTIP. THE ACFT STOPPED WITH THE NOSEWHEEL DUG INTO THE GND. I BELIEVE THE CAUSE OF THE ACCIDENT WAS A STUCK L BRAKE AND/OR THE PVT PLT (MANIPULATOR OF THE CTLS) LANDED WITH THE L BRAKE ON. THE ACFT WOULD NOT HAVE STRUCK THE GND (PROP-WINGTIP) IF THE GND WAS HARDER. TO AVOID THE ACCIDENT SHOULD HAVE BEEN KEPT ON THE RWY. IN MY OPINION THIS WAS IMPOSSIBLE WITH THE TIME/SPACE AND STUCK BRAKE WORKING AGAINST ME.

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.