Runway excursion. - NASA ASRS

Attributes
ACN	122538
Time
Date	198909
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : smx
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 2800 flight time type : 600
ASRS Report	122538
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

We were cleared for a visibility approach to smx runway 30. The WX was good and I called for the before landing checklist, which the captain executed. A normal landing was made, followed by a normal roll-out. As the captain turned off the runway I looked to clear his right turn. When I looked back I could see that we were going to go off the taxiway and into some taxi lights. I looked at the captain to see what he was doing. I could tell he was having trouble stopping the aircraft, so I applied my brakes to help stop the aircraft. My brakes would not work either. We struck a taxi light with the left propeller sustaining extensive damage to the propeller tips. The aircraft was shutdown and the passenger deplaned right there. After a post-flight inspection I could find no reason, either externally or internally, why the brakes failed. There was no indication that would have led us to believe our brakes would not function on landing. The aircraft was investigated by maintenance. The propellers were replaced. A problem with the pressure indicating was found; however to what extent I am not sure. I believe the captain may have, or rather should have, tried to use the emergency brake--however it did happen rather fast and he did not have time to grab it while trying to manipulate the tiller.

Original NASA ASRS Text

Title: RWY EXCURSION.

Narrative: WE WERE CLRED FOR A VIS APCH TO SMX RWY 30. THE WX WAS GOOD AND I CALLED FOR THE BEFORE LNDG CHKLIST, WHICH THE CAPT EXECUTED. A NORMAL LNDG WAS MADE, FOLLOWED BY A NORMAL ROLL-OUT. AS THE CAPT TURNED OFF THE RWY I LOOKED TO CLR HIS RIGHT TURN. WHEN I LOOKED BACK I COULD SEE THAT WE WERE GOING TO GO OFF THE TXWY AND INTO SOME TAXI LIGHTS. I LOOKED AT THE CAPT TO SEE WHAT HE WAS DOING. I COULD TELL HE WAS HAVING TROUBLE STOPPING THE ACFT, SO I APPLIED MY BRAKES TO HELP STOP THE ACFT. MY BRAKES WOULD NOT WORK EITHER. WE STRUCK A TAXI LIGHT WITH THE LEFT PROP SUSTAINING EXTENSIVE DAMAGE TO THE PROP TIPS. THE ACFT WAS SHUTDOWN AND THE PAX DEPLANED RIGHT THERE. AFTER A POST-FLT INSPECTION I COULD FIND NO REASON, EITHER EXTERNALLY OR INTERNALLY, WHY THE BRAKES FAILED. THERE WAS NO INDICATION THAT WOULD HAVE LED US TO BELIEVE OUR BRAKES WOULD NOT FUNCTION ON LNDG. THE ACFT WAS INVESTIGATED BY MAINT. THE PROPS WERE REPLACED. A PROB WITH THE PRESSURE INDICATING WAS FOUND; HOWEVER TO WHAT EXTENT I AM NOT SURE. I BELIEVE THE CAPT MAY HAVE, OR RATHER SHOULD HAVE, TRIED TO USE THE EMER BRAKE--HOWEVER IT DID HAPPEN RATHER FAST AND HE DID NOT HAVE TIME TO GRAB IT WHILE TRYING TO MANIPULATE THE TILLER.

Data retrieved from NASA's ASRS site as of August 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.