On landing; a CE550 blew both main tires which was caused by a partially engaged parking brake. The ...

Attributes
ACN	692455
Time
Date	200603
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Citation II S2/Bravo
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 25 flight time total : 2425 flight time type : 25
ASRS Report	692455
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Chart Or Publication Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

Upon touchdown it was evident that the main landing gear was skidding. We made a normal visual approach to a normal landing on the blocks. All checklists were completed including ensuring the parking brake was off. (Aircraft seemed not to accelerate normally above 80 KTS on our takeoff so we briefed about landing without the antiskid but had no failure light for any systems.) after landing; tower called stating much smoke and debris was coming from rear of the aircraft and asked if we needed assistance then said they were rolling the fire trucks. I stated we must have blown a tire. Upon exiting aircraft after skidding to a stop; we found both main tires blown. The event closed the runway for approximately 2 hours while maintenance replaced the wheels/tires and tugged aircraft off runway. No one was injured. It was later determined that the parking brake cable could bind and remain partially engaged and that is assumed to have happened. Upon subsequent flts; we remained vigilant to ensure knob is totally in before taxi/takeoff. The next day after replacing wheels and tires the aircraft operated normally but the parking brake cable does bind occasionally. I also fly lear 35's and they have a brake engaged light that would be helpful on the citation.callback conversation with reporter revealed the following information: the reporter stated that the parking brake is located behind the captain's yoke just under the lower edge of the instrument panel and has a knob on the cable about the size of a half dollar coin. It has no warning light when the brake is applied fully or partially. The first officer is unable to see the position of the cable. Both main tires were blown and were replaced. This is the first parking brake incident the reporter has experienced but is aware of another incident on another CE550 with a partially applied parking brake.

Original NASA ASRS Text

Title: ON LNDG; A CE550 BLEW BOTH MAIN TIRES WHICH WAS CAUSED BY A PARTIALLY ENGAGED PARKING BRAKE. THE REPORTER SUSPECTS THAT THE PARKING BRAKE CABLE WAS BINDING AND NOT COMPLETELY RELEASED. THERE IS NO WARNING SYSTEM OR LIGHT THAT INDICATES THE PARKING BRAKE IS STILL ENGAGED.

Narrative: UPON TOUCHDOWN IT WAS EVIDENT THAT THE MAIN LNDG GEAR WAS SKIDDING. WE MADE A NORMAL VISUAL APCH TO A NORMAL LNDG ON THE BLOCKS. ALL CHKLISTS WERE COMPLETED INCLUDING ENSURING THE PARKING BRAKE WAS OFF. (ACFT SEEMED NOT TO ACCELERATE NORMALLY ABOVE 80 KTS ON OUR TKOF SO WE BRIEFED ABOUT LNDG WITHOUT THE ANTISKID BUT HAD NO FAILURE LIGHT FOR ANY SYSTEMS.) AFTER LNDG; TWR CALLED STATING MUCH SMOKE AND DEBRIS WAS COMING FROM REAR OF THE ACFT AND ASKED IF WE NEEDED ASSISTANCE THEN SAID THEY WERE ROLLING THE FIRE TRUCKS. I STATED WE MUST HAVE BLOWN A TIRE. UPON EXITING ACFT AFTER SKIDDING TO A STOP; WE FOUND BOTH MAIN TIRES BLOWN. THE EVENT CLOSED THE RWY FOR APPROX 2 HOURS WHILE MAINT REPLACED THE WHEELS/TIRES AND TUGGED ACFT OFF RWY. NO ONE WAS INJURED. IT WAS LATER DETERMINED THAT THE PARKING BRAKE CABLE COULD BIND AND REMAIN PARTIALLY ENGAGED AND THAT IS ASSUMED TO HAVE HAPPENED. UPON SUBSEQUENT FLTS; WE REMAINED VIGILANT TO ENSURE KNOB IS TOTALLY IN BEFORE TAXI/TKOF. THE NEXT DAY AFTER REPLACING WHEELS AND TIRES THE ACFT OPERATED NORMALLY BUT THE PARKING BRAKE CABLE DOES BIND OCCASIONALLY. I ALSO FLY LEAR 35'S AND THEY HAVE A BRAKE ENGAGED LIGHT THAT WOULD BE HELPFUL ON THE CITATION.CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT THE PARKING BRAKE IS LOCATED BEHIND THE CAPT'S YOKE JUST UNDER THE LOWER EDGE OF THE INSTRUMENT PANEL AND HAS A KNOB ON THE CABLE ABOUT THE SIZE OF A HALF DOLLAR COIN. IT HAS NO WARNING LIGHT WHEN THE BRAKE IS APPLIED FULLY OR PARTIALLY. THE FO IS UNABLE TO SEE THE POSITION OF THE CABLE. BOTH MAIN TIRES WERE BLOWN AND WERE REPLACED. THIS IS THE FIRST PARKING BRAKE INCIDENT THE RPTR HAS EXPERIENCED BUT IS AWARE OF ANOTHER INCIDENT ON ANOTHER CE550 WITH A PARTIALLY APPLIED PARKING BRAKE.

Data retrieved from NASA's ASRS site as of January 2009 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.

On landing; a CE550 blew both main tires which was caused by a partially engaged parking brake. The reporter suspects that the parking brake cable was binding and not completely released. There is no warning system or light that indicates the parking brake is still engaged.