What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Incident: Lear 55 blown right main tires on takeoff N550AK s/n:045 date of incident: 02/04/2004 location: Lexington KY (lex) bluegrass airport pilot: bob wallace copilot: richard lechtrecker incident investigation start date: 02/05/2004 the flight crew stated that a normal preflight was performed and tires looked ok. The wind was straight down the runway @ about 4 knots. The aircraft was @ 21000 lbs take off weight, 500 lbs. Under max takeoff weight of 21500 lbs. With 6000 lbs fuel and six (6) passengers. The flight crew statements indicated after V1 and just prior to rotation they heard a pop and felt a vibration. Just as aircraft lifted off they heard another pop. Crew elected to leave the gear down. The crew discussed and agreed that they had blown two tires. They notified air traffic control tower and requested to stay local. The aircraft held over the outer marker @ 5,000 ft with gear and flaps down to increase fuel burn for approximately two hours. The crew tried to get aircraft as light as possible with fuel reserves in case of go around. The aircraft did a fly-by the control tower to confirm the blown tires and damage. The crew landed to the left of the centerline of the runway @ REF-15. Touched down @ 50 knots and did not use the brakes. Let roll to taxiway A4 and made a gradual turn. Performed emergency shutdown. On 02/05/2004 the aircraft was viewed and pictures taken of the aircraft on a jack under the right wing. privacy data omitted ^ An employee of local operator tested the tires with a calibrated gauge. The left inboard tire was @ 150 PSI and the left outboard was @ 148 PSI, the nose tire was @ 81 PSI. The outside temp was 32 degrees. The debris recovered by bluegrass airport was inspected and one of the tire cases had a hole or puncture in the tread area. Reference pictures taken. On 02/06/2004 privacy data omitted the area Lear jet tech. Rep. Was contacted and asked if he was aware of the Lear 55 having a problem with blowing tires or a tire problem of any kind? privacy data omitted Stated the only problem that he was aware of was if the tires were run over inflated or under inflated. He stated the tires were in short supply and hard to find a couple of years ago. He stated that the Lear 55 with an increased takeoff weight kit installed would use 14 ply tires p/n 178K43-1. One without the kit would use 12 ply tires p/n 178K23-4 or 178K23-5. He stated that he was surprised that the same aircraft had this problem before and the fact that it had happened three times in about a one-year period was amazing. On 02/10/2004 copies of the aircraft logs were reviewed and they indicate that p/n 178K43-1 tires have been used. The pilot Mr. Wallace confirmed that the aircraft had the increased takeoff weight kit. Mr. Wallace also confirmed that the aircraft was not on a charter and the aircraft is not on a charter certificate at this time. They are working to get the aircraft on global air 135 certificate out of denver Colorado. The aircraft averages 643.5 hours a year. The average between tire changes is 148.9 hrs or 117 landings. The average between brake changes is 238 or 126 landings. Mr. Wallace's mechanic privacy data omitted received a fax from privacy data omitted a field service representative for Bombardier, Learjet. Recommending the following: 1. Perform a hard landing inspection part b per chapter 5-50-00 of the Learjet maintenance manual. 2. Replace the main wheels and tire assemblies on the affected main landing gear. 3. Replace or send to Learjet for evaluation the damaged gear door. 4. Thoroughly inspect the brakes, brake lines and all wiring on the affected strut for damage. If damaged then damage measurements should be sent to Learjet field service for evaluation. 5. The flap damage cannot be deeper than .100. If dents are noted then they should be eddy current checked for cracks. If dents are deeper than .100 the measurements should be sent to Learjet field service for evaluation. 6. Prior to the next flight a complete anti-skid functional test should be performed. The aircraft is awaiting the above work to be performed.
As the FAA filed it
(-23) INCIDENT: LEAR 55 BLOWN RIGHT MAIN TIRES ON TAKEOFF N550AK S/N:045 DATE OF INCIDENT: 02/04/2004 LOCATION: LEXINGTON KY (LEX) BLUEGRASS AIRPORT PILOT: BOB WALLACE COPILOT: RICHARD LECHTRECKER INCIDENT INVESTIGATION START DATE: 02/05/2004 THE FLIGHT CREW STATED THAT A NORMAL PREFLIGHT WAS PERFORMED AND TIRES LOOKED OK. THE WIND WAS STRAIGHT DOWN THE RUNWAY @ ABOUT 4 KNOTS. THE AIRCRAFT WAS @ 21000 LBS TAKE OFF WEIGHT, 500 LBS. UNDER MAX TAKEOFF WEIGHT OF 21500 LBS. WITH 6000 LBS FUEL AND SIX (6) PASSENGERS. THE FLIGHT CREW STATEMENTS INDICATED AFTER V1 AND JUST PRIOR TO ROTATION THEY HEARD A POP AND FELT A VIBRATION. JUST AS AIRCRAFT LIFTED OFF THEY HEARD ANOTHER POP. CREW ELECTED TO LEAVE THE GEAR DOWN. THE CREW DISCUSSED AND AGREED THAT THEY HAD BLOWN TWO TIRES. THEY NOTIFIED AIR TRAFFIC CONTROL TOWER AND REQUESTED TO STAY LOCAL. THE AIRCRAFT HELD OVER THE OUTER MARKER @ 5,000 FT WITH GEAR AND FLAPS DOWN TO INCREASE FUEL BURN FOR APPROXIMATELY TWO HOURS. THE CREW TRIED TO GET AIRCRAFT AS LIGHT AS POSSIBLE WITH FUEL RESERVES IN CASE OF GO AROUND. THE AIRCRAFT DID A FLY-BY THE CONTROL TOWER TO CONFIRM THE BLOWN TIRES AND DAMAGE. THE CREW LANDED TO THE LEFT OF THE CENTERLINE OF THE RUNWAY @ REF-15. TOUCHED DOWN @ 50 KNOTS AND DID NOT USE THE BRAKES. LET ROLL TO TAXIWAY A4 AND MADE A GRADUAL TURN. PERFORMED EMERGENCY SHUTDOWN. ON 02/05/2004 THE AIRCRAFT WAS VIEWED AND PICTURES TAKEN OF THE AIRCRAFT ON A JACK UNDER THE RIGHT WING. ^PRIVACY ^ AN EMPLOYEE OF LOCAL OPERATOR TESTED THE TIRES WITH A CALIBRATED GAUGE. THE LEFT INBOARD TIRE WAS @ 150 PSI AND THE LEFT OUTBOARD WAS @ 148 PSI, THE NOSE TIRE WAS @ 81 PSI. THE OUTSIDE TEMP WAS 32 DEGREES. THE DEBRIS RECOVERED BY BLUEGRASS AIRPORT WAS INSPECTED AND ONE OF THE TIRE CASES HAD A HOLE OR PUNCTURE IN THE TREAD AREA. REFERENCE PICTURES TAKEN. ON 02/06/2004 ^PRIVACY DATA OMITTED THE AREA LEAR JET TECH. REP. WAS CONTACTED AND ASKED IF HE WAS AWARE OF THE LEAR 55 HAVING A PROBLEM WITH BLOWING TIRES OR A TIRE PROBLEM OF ANY KIND? ^PRIVACY DATA O^ STATED THE ONLY PROBLEM THAT HE WAS AWARE OF WAS IF THE TIRES WERE RUN OVER INFLATED OR UNDER INFLATED. HE STATED THE TIRES WERE IN SHORT SUPPLY AND HARD TO FIND A COUPLE OF YEARS AGO. HE STATED THAT THE LEAR 55 WITH AN INCREASED TAKEOFF WEIGHT KIT INSTALLED WOULD USE 14 PLY TIRES P/N 178K43-1. ONE WITHOUT THE KIT WOULD USE 12 PLY TIRES P/N 178K23-4 OR 178K23-5. HE STATED THAT HE WAS SURPRISED THAT THE SAME AIRCRAFT HAD THIS PROBLEM BEFORE AND THE FACT THAT IT HAD HAPPENED THREE TIMES IN ABOUT A ONE-YEAR PERIOD WAS AMAZING. ON 02/10/2004 COPIES OF THE AIRCRAFT LOGS WERE REVIEWED AND THEY INDICATE THAT P/N 178K43-1 TIRES HAVE BEEN USED. THE PILOT MR. WALLACE CONFIRMED THAT THE AIRCRAFT HAD THE INCREASED TAKEOFF WEIGHT KIT. MR. WALLACE ALSO CONFIRMED THAT THE AIRCRAFT WAS NOT ON A CHARTER AND THE AIRCRAFT IS NOT ON A CHARTER CERTIFICATE AT THIS TIME. THEY ARE WORKING TO GET THE AIRCRAFT ON GLOBAL AIR 135 CERTIFICATE OUT OF DENVER COLORADO. THE AIRCRAFT AVERAGES 643.5 HOURS A YEAR. THE AVERAGE BETWEEN TIRE CHANGES IS 148.9 HRS OR 117 LANDINGS. THE AVERAGE BETWEEN BRAKE CHANGES IS 238 OR 126 LANDINGS. MR. WALLACE'S MECHANIC ^PRIVACY DATA ^ RECEIVED A FAX FROM ^PRIVACY DATA^ A FIELD SERVICE REPRESENTATIVE FOR BOMBARDIER, LEARJET. RECOMMENDING THE FOLLOWING: 1. PERFORM A HARD LANDING INSPECTION PART B PER CHAPTER 5-50-00 OF THE LEARJET MAINTENANCE MANUAL. 2. REPLACE THE MAIN WHEELS AND TIRE ASSEMBLIES ON THE AFFECTED MAIN LANDING GEAR. 3. REPLACE OR SEND TO LEARJET FOR EVALUATION THE DAMAGED GEAR DOOR. 4. THOROUGHLY INSPECT THE BRAKES, BRAKE LINES AND ALL WIRING ON THE AFFECTED STRUT FOR DAMAGE. IF DAMAGED THEN DAMAGE MEASUREMENTS SHOULD BE SENT TO LEARJET FIELD SERVICE FOR EVALUATION. 5. THE FLAP DAMAGE CANNOT BE DEEPER THAN .100. IF DENTS ARE NOTED THEN THEY SHOULD BE EDDY CURRENT CHECKED FOR CRACKS. IF DENTS ARE DEEPER THAN .100 THE MEASUREMENTS SHOULD BE SENT TO LEARJET FIELD SERVICE FOR EVALUATION. 6. PRIOR TO THE NEXT FLIGHT A COMPLETE ANTI-SKID FUNCTIONAL TEST SHOULD BE PERFORMED. THE AIRCRAFT IS AWAITING THE ABOVE WORK TO BE PERFORMED.
Other reports on N550AK · 3
Matched to the same aircraft by N-number and date.