Accident Details
Probable Cause and Findings
The pilot's encounter with adverse weather and loss of aircraft control, which resulted in exceeding the aircraft's design stress limits. Factors were the pilot's lack of total experience in the make and model of airplane, and the icing and thunderstorm weather conditions.
Aircraft Information
Registered Owner (Historical)
Analysis
HISTORY OF FLIGHT
On April 4, 1999, approximately 1831 central daylight time, a Piper PA-46-350P Malibu Mirage single-engine airplane, N497CA, was destroyed after the aircraft broke up while in cruise flight near Waldron, Arkansas. The instrument rated private pilot, sole occupant of the airplane, was fatally injured. The airplane was registered to Robert R. Meredith & Co., Inc., of Rumson, New Jersey, and operated by the pilot as a 14 Code of Federal Regulations Part 91 business flight. An IFR flight plan was filed for the cross-country flight that originated from New Jersey. An intermediate stop was made at Nashville, Tennessee, where the airplane was refueled. The flight departed Nashville, at 1614, on the final leg of the flight to the Addison Airport, Dallas, Texas.
Following takeoff from Nashville, the pilot established initial contact with the Memphis Air Route Traffic Control Center (ARTCC), at 1625. At 1641, the Memphis ARTCC controller at the high altitude sector (R26) assigned the pilot the cruise altitude of FL240 (24,000 feet msl). At 1711, R26 confirmed with the pilot that his route of flight was to Texarkana then direct to Addison. At this time R26 asked the pilot if he would rather go direct to Addison. The pilot replied he would and R26 cleared him direct to Addison.
At 1745, the Memphis ARTCC controller at the Conway high sector (R21B) asked the pilot if he copied the weather south of Little Rock. The pilot replied "ah I don't cop I don't have ah weather on ah radar yet." R21B advised the pilot that most of the aircraft going to Dallas had been deviating towards McAlester and if he wanted to start a right deviation that was approved and if he wanted to continue on that was also approved. The pilot replied "ah I'd like to be directed if uh they're going to McAlester ah can you give me a vector and I'll find it then." R21B told the pilot to "turn right heading two seven zero." The pilot acknowledged.
At 1817:10, the pilot checked in with the Memphis ARTCC Razorback high sector controller (R22A). On the initial call the pilot asked if there was a better route to avoid weather than his direct route to McAlester. R22A replied "probably ah going to ah Addison ah McAlester is going work fine," and that the other traffic destined for Dallas-Forth Worth (DFW) was being rerouted over Tulsa for spacing. The pilot asked if the weather was fine to go direct Addison. R22A replied "negative ah naw you won't get direct Addison." The pilot asked, "then direct ah McAlester then direct Addison?" R22A cleared the pilot direct McAlester then direct Addison as requested. The pilot acknowledged the clearance and then stated "ah thank you seven ah char Charlie alpha appreciate keeping an eye I don't paint anything yet [on his weather radar] but if you hear anything or see anything please let me know." R22A did not respond to the pilot's request.
At 1828:52 (approximately 10 minutes after the last communication exchange), the pilot advised Memphis ARTCC that "I.. I'm gonna deviate out of eight (unintelligible) getting some ice I'd like to head north." At 1829:08, R22A asked, "ah who wanted direct somewhere?" At 1829:11, the pilot replied, "seven Charlie alpha picking up ice I'd like to head north." At 1829:14, R22A replied, "november seven Charlie alpha deviation ah north of course is approved you wanta change altitude?" At 1829:20, the pilot responded, "ah I can't go up much higher I'm really having ice." At 1829:27, the pilot reported, "I'm really getting a lot of ice ah I have a fuel imbalance." At 2329:32, Memphis Center asked the pilot if he would like to go lower. The pilot replied, "I.. I don't (unintelligible)." Radio communication was lost.
A review of available radar data indicated a deterioration of airspeed began at 1825:40. Over the next 5 minutes, the data indicates the airplane's ground speed decreased from 180 knots to 81 knots as the heading changed from 268 degrees to 295 degrees. At 1829:40, the altitude started decreasing from 24,000 feet msl. At 1830:04, the aircraft passed through 17,900 feet msl as it continued in its descent. Radar contact was lost at 1831:10, at an altitude of 5,800 feet msl.
A witness, located near the accident site, reported hearing the sound of the engine stop running, and observed the airplane descending from the dark clouds in a nose down attitude and rotating clockwise. The wreckage of the airplane was scattered along an area of about four miles, approximately 3.8 miles east of Waldron.
Residents in the area of the accident reported that weather at the time of the accident was high ceilings with heavy rain prior to and after the accident. There were thunderstorms with lightning in the area at the time of the accident.
PERSONNEL INFORMATION
According to FAA records, the pilot was issued a private pilot certificate on May 8, 1993, with an airplane single-engine land rating. On August 29, 1993, he was issued an instrument rating. The pilot held a valid third class medical certificate, issued November 02, 1998. The certificate stipulated a limitation to wear corrective lenses for distant vision, and possess corrective lenses for near vision when operating an aircraft.
The pilot's most recent biennial flight review was completed on March 19, 1999, at the end of the Mirage Initial Training administered by Attitudes International Inc., in Vero Beach, Florida. According to the pilot's reconstructed training records, the training consisted of 5.5 hours in a flight simulator and 4.6 hours in the accident airplane, which the pilot had just purchased.
According to the pilot's three flight logbooks, as of April 4, 1999, he had accumulated a total flight time of 731 hours, of which 21.4 hours were in the make and model of the accident airplane. He had accumulated a total of 60.8 hours actual instrument flight time, with November 02, 1995, as the last actual instrument flight logged. The pilot had accumulated a total of 3.5 hours simulated instrument flight time in the accident airplane.
AIRCRAFT INFORMATION
The Piper PA-46-350P Malibu Mirage was a turbocharged single-engine, all metal, retractable landing gear, low wing airplane. It was powered by a Textron Lycoming TIO-540-AE2A engine, rated at 350 horsepower, and a Hartzell composite, three-blade, constant speed propeller. On March 17, 1999, the airplane, with a total of 5.3 hours, was issued a standard airworthiness certificate.
The cabin was pressurized with seating for six occupants, and it had two separate luggage compartments. Fuel was stored in two main integral wing tanks, and the fuel capacity for each fuel tank was 60 usable gallons and 1 gallon of unusable fuel, for a total of 122 gallons. The fuel tanks were selected by using a selector valve, which is controlled by a thumb-size handle. The detent selections were OFF, LEFT, and RIGHT.
The Pilot Operating Handbook (POH) states on page 7-35, section 7, paragraph 7.17, that when beginning flight operations with an equal amount of fuel in each tank, start, taxi, takeoff, and climb on the left tank. The POH further states that after establishing a cruise configuration, change to the right tank. To maintain lateral balance, it is suggested that alternate tanks be selected in 20 gallon (approximately 60 minute) increments, thus requiring minimal aileron force to keep the wings level. In any case, the fuel imbalance limitations in Section 2 must not be exceeded (maximum fuel imbalance is 10 gallons). According to the POH, the pilot must monitor the fuel gauges and switch tanks as required. Fuel cannot be used from both tanks at the same time.
According to performance calculations provided by the aircraft manufacturer, the total amount of fuel used for start, taxi, run-up, and climb to 24,000 feet msl was approximately 18 gallons. The fuel used in cruise flight was approximately 33.3 gallons. The total fuel used was approximately 51.3 gallons.
The airplane was equipped with a Bendix/King KFC 225 Autopilot, a Bendix/King RDR 2000 weather radar system, and an ice protection system, which included windshield heat, propeller heat, a heated pitot head, a wing ice detection light, and pneumatic wing and empennage boots.
The POH states on page 4-32, section 4, paragraph 4.27, that the pilot should monitor weather conditions while flying, and be alert for meteorological conditions which might lead to icing. Even aircraft equipped with a complete deicing option are not approved for flight in heavy icing, heavy snow, or freezing rain. Immediate steps shall be taken to exit any area where such icing conditions are inadvertently encountered. The POH further states on page 9-6, section 9, supplement 3, section 2, Limitations, that the ice protection system was designed and tested for operation in the meteorological conditions of FAR 25, Appendix C, for continuous maximum and intermittent maximum icing conditions. The ice protection system was not designed or tested for flight in freezing rain and/or mixed conditions or for icing conditions more severe than those of FAR 25, Appendix C. Therefore, flight in those conditions may exceed the capabilities of the ice protection system. The POH also states on page 9-19, section 9, supplement 3, section 4-Normal Procedures, that operating in icing conditions of Continuous Maximum and Intermittent Maximum as defined in FAR 25, Appendix C, has no correlation between these conditions and forecasts of reported "Light, Moderate and Severe" conditions. Flight into severe icing is not approved.
The POH states on page 9-22, section 9, Supplement 3, Note, "an icing encounter can render the aircraft radar unreliable due to beam reflection off of the ice layer on the radome. Also, there may be a degradation of communication and navigation equipment due to ice accumulation on antennas."
A review of the airframe and engine maintenance records, by the NTSB investigator-in-ch...
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# FTW99FA104