N44KK

HISTORY OF FLIGHT

On November 19, 2003, at 1016 central standard time, a Beech A45 single-engine airplane, N44KK, registered to PRVNY PLUK, LLC, of Houston, Texas, and operated by Texas Air Aces of Spring, Texas, was destroyed when it impacted terrain following a loss of control after an in-flight breakup while maneuvering near Montgomery, Texas. The commercial pilot and pilot-rated passenger were fatally injured. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 training flight. The local flight originated from the David Wayne Hooks Memorial Airport (DWH), near Spring, Texas, approximately 0930, in the flight lead position of a flight of two airplanes.

The pilot-rated passenger attended Texas Air Aces for a two-day advanced maneuvering program (AMP), which included ground school and in-flight training that focused on unusual attitude recognition and "upset" recovery. On the morning of the accident, a pre-flight briefing was conducted by the pilot in command of the accident airplane. According to the pilot-rated passenger of the second airplane in the formation (N141SW): "The briefing included the pertinent radio and formation information for a flight of two, to and from the practice area. Loss of radio was covered. We discussed completing the AMP training from the day before. The pre-flight brief did not include air combat maneuvers, as I remember it."

According to a statement provided by the pilot of N141SW, the flight of two airplanes flew to a practice area located near Lake Conroe, approximately 15 miles north northwest of DWH. The formation flight split up upon arriving at the practice area and conducted individual upset maneuver training. After the training was completed, approximately 1010, the pilot in command of N141SW suggested to the flight leader (pilot of N44KK) that they engage in a simulated air combat demonstration. The flight leader agreed, and both airplanes rendezvoused over Lake Conroe for a "standard engagement." The pilot-in-command of N141SW stated they initially "engaged" at 7,500 feet and 140 knots. Each aircraft made a left climbing turn to begin the maneuvering. Several turns were made as the airspeed continually decreased. After two or three turns, the flight lead aircraft (N44KK) was below and to the right (4-5 o'clock position) of the second aircraft (N141SW) when it "broke up in flight and spun to the ground."

The pilot in command of N141SW squawked transponder code "seventy seven hundred" (7700) and made a "Mayday" call on VHF frequency 121.50. N141SW continued to fly over the accident site for approximately 10-15 minutes before returning to DWH. The wreckage of N44KK came to rest in a heavily wooded area, and flames were observed by the pilots of N141SW.

A witness, located .52 nautical miles south southeast of the impact point, was outside in her yard and observed the airplanes flying overhead for approximately 45 minutes. She reported that she heard two "popping noises, then a clack," like armor hitting each other, then another "pop." The engine went silent, and in the distance she heard a "pop," then a sound like a "dud fire cracker." The witness heard a whirling sound, looked up and saw a wing floating down at an approximate a 65-degree angle. She stated that she did not see the wing come off of the airplane, but observed smoke and ash flying in the air. The right wing came to rest approximately 235 feet from where the witness was located.

Several other witnesses on the ground observed both airplanes maneuvering overhead. One witness stated that both airplanes were in a "bank maneuver," when one of the airplane's "wings came off and began to spiral down." Another witness reported that they heard the engine "revving real high, full throttle," and stated that there was no collision between the two airplanes.

PERSONNEL INFORMATION

The pilot-in-command, who occupied the rear seat, was a co-founder of Texas Air Aces and had been an employee since 1992. He held a commercial pilot certificate with airplane single-engine land, airplane multi-engine land, and instrument airplane ratings. He also held a flight instructors certificate. The pilot was issued his most recent Federal Aviation Administration (FAA) second-class medical certificate on November 11, 2003, with a limitation requiring the holder to wear corrective lenses. At the time of the pilot's most recent medical certificate application, he reported a total of 15,100 flight hours. The pilot's logbooks were not recovered.

The pilot-rated passenger, who occupied the front seat, held an airline transport certificate with type ratings in the DC-9 and DO-328, a commercial pilot certificate with an airplane single-engine land rating, and a flight engineer certificate. He also held a flight instructors certificate. He was issued his most recent FAA first-class medical certificate on October 6, 2003, with a limitation requiring the holder to wear corrective lenses. At the time of his last medical application, he reported a total of 5,650 flight hours.

AIRCRAFT INFORMATION

The 1965-model Beech A45 single-engine airplane, serial number G-714 was a low wing, semi-monocoque design airframe, configured for a maximum of two occupants in a tandem seating configuration. Originally, the primary function of the aircraft was a primary military trainer. Many of these military trainers, when de-commissioned by the military, were bought, refurbished, and utilized in the civil aviation community. According to the airplane operating handbook, the airplane (when manufactured) was capable of gravity (g) loading limits from +6g to -3g. The airplane was powered by a Continental IO-520-BB engine, rated at 285-horsepower, driving a three bladed constant speed Hartzell propeller.

On July 9, 1999, Airworthiness Directive (AD) 99-12-02 was issued by the FAA. The AD mandated flight and operating limitations on all Beech A45 aircraft until structural inspection procedures could be developed. The AD limited the aircraft to normal category operations and prohibited operations in acrobatic and utility categories. Additionally, the AD limited the flight load factor from "0" to "2.5" G's and limited the maximum airspeed to 175 miles per hour (mph).

On August 16, 2001, the FAA issued AD 2001-13-18, which superseded AD 99-12-02, and was applicable to all Beech A45 aircraft. AD 2001-13-18 maintained the actions required in AD 99-12-02 (paragraphs d(1), d(2), d(3), and d(4)) until such time as the inspection required in paragraph d(5) is accomplished as summarized below.

d(1) Install placards on the airplane instrument panels (both front and back) next to the airspeed indicators in the pilot's clear view: "Never exceed speed, VNE 175 mph (152 knots) IAS; Normal Acceleration (G) Limits 0, and +2.5; ACROBATIC MANEUVERS PROHIBITED." Insert this AD into the aircraft flight manual (AFM). Required prior to further flight after July 9, 1999.

d(2) Mark the airspeed indicator with a red radial line at 175 mph and a white slippage index mark. Required within 10 hours time in service (TIS) after July 9, 1999.

d(3) Mark the "g" meters with red lines at 0 and +2.5 and a white slippage index mark. Required within 10 hours TIS after July 9, 1999.

d(4) The actions indicated in d(1-3) above are no longer required after the initial inspection in d(5)

d(5) Inspect the wing spars for cracks per Raytheon Aircraft Company (RAC) mandatory Service Bulletin (SB) 57-3329. Required within the next 80 hours TIS after August 16, 2001, or within 12 months after August 16, 2001, whichever is later. Inspect thereafter at intervals not to exceed 80 hours TIS.

d(6) Replace any cracked wing spar found in d(5) prior to further flight. A crack indication in the filler strip is allowed if the crack direction is toward the outside edge of the part.

d(7) Submit a report to the FAA with the initial inspection results even if no crack is found in accordance with pages 58 through 60 of RAC SB 57-3329. Required within 10 days after the initial inspection or within 10 days after August 16, 2001, whichever is later.

In February of 2000, Raytheon issued SB 57-3329, requiring the following inspections on the wings.

1. Per step 8, inspect, using an eddy current probe, nine fastener holes in the forward spar (4 oriented vertically through the spar cap and the outboard end of the wing fitting and 5 oriented horizontally through the lower spar structure.)

2. Per step 8, inspect, using an eddy current probe, the forward and aft edge of the forward hinge extrusion adjacent to both the leading edge lower skin and the box section lower skin, along the entire length of the spar.

3. Per step 9, inspect, using an eddy current probe, one fastener hole in the forward main landing gear (MLG) trunnion fitting and 2 fastener holes in the aft MLG trunnion fitting.

4. Per step 10, inspect using an eddy current probe, two fastener holes in the box section lower, forward hinge and adjacent to two fasteners in the leading edge lower hinge angle.

5. Per step 11, inspect, using an eddy current probe, the lower surface of the lower, aft, outboard bathtub fitting.

6. Per step 12, inspect, using an eddy current probe, the lower aft reinforcement on the inboard and outboard side of the vertical stiffener on the aft side of the forward spar.

7. Per step 13, inspect visually the upper and lower spar caps, adjacent hinge angles, the forward side of the forward spar, the aft side of the forward spar, and the forward side of the aft spar for corrosion.

The area is then rebuilt with removable fasteners and a small access panel to facilitate future inspections, which are required every 80 hours TIS.

In section (e) of AD 2001-13-18, the FAA allows the operator of the aircraft an alternative method of compliance (AMOC) or an adjustment to the compliance time if the method provide...