CHI97FA290

The flight lesson was to introduce single-engine operations to the dual student. The airplane took off, and remained in the traffic pattern, performed two touch-and-go's. The instructor pilot requested a full stop, taxied back, which was approved by the air traffic control tower (ATCT). The airplane landed and was taxied to an intersection. The ATCT cleared the airplane for takeoff and for the option. A witness on the ground said he heard the airplane 'rev up its motors, as if to takeoff; then the motors went to idle, then they revved up again and the plane left.' Several witnesses saw the airplane takeoff to the west. At approximately 100 to 150 feet above ground level, the airplane pitched up steeply and winged over to the right. The airplane nosed straight down into the ground. The airplane burst into flames on impact. Examination of the wreckage revealed no anomalies. The elevator trim jackscrew assembly was observed in a position equating to 10 degrees of nose up trim.

History of flight

On September 12, 1997, at 1020 eastern standard time (est), a Beech 76, N18562, operated by a certified flight instructor was destroyed when on takeoff, the airplane pitched up, rolled off to the right and impacted the terrain. A subsequent post-crash fire ensued. Visual meteorological conditions prevailed at the time of the accident. The instructional flight was being conducted under 14 CFR Part 91. No flight plan was on file. The instructor pilot, dual student, and passenger on board the airplane were fatally injured. The flight originated at West Lafayette, Indiana, at 1019 est.

The Administrative Coordinator for the Department of Aviation Technology at Purdue University, West Lafayette, Indiana, said that the instructor pilot was supposed to give the student pilot flight instruction in accordance with the university's multi- engine land airplane syllabus. The lesson objectives were to introduce single-engine operations to the student pilot; and then on a subsequent flight, give the same instruction to the student- passenger, who at the time of the accident was occupying the airplane's left rear seat.

At 0957 est, the Lafayette Air Traffic Control Tower (ATCT) cleared the airplane for takeoff. The airplane took off on runway 23 at Purdue University Airport, West Lafayette, Indiana, and remained in the airport's traffic pattern. At 1000 est and 1006 est, the airplane "was cleared for an option on runway 23." In both cases, the airplane completed a touch-and-go. At 1012, the Lafayette ATCT cleared the pilot for an option on runway 23. At 1014 est, the pilot of the airplane reported "the operation will be a full stop taxi back to runway 23." The airplane was cleared to land.

The airplane taxied to the alpha intersection, located 703 feet from the approach threshold for runway 23. At 1017, the pilot reported "ready for departure." The ATCT instructed the pilot to taxi the airplane "into position and hold for traffic departing on runway 28." At 1018 est, the airplane was "cleared for takeoff and cleared for the option. The aircraft was instructed to fly left closed traffic."

The ATCT manager and two Air Traffic Control Specialists in the tower saw the airplane near the departure end of the runway. One Air Traffic Control Specialist saw "the top of the airplane's wings perpendicular to the ground as it nosed over." All three witnesses observed the airplane veer to the right and dive straight in, nose first, impacting the ground in a grassy area to the right of the runway.

A witness on the ground, recalled hearing the airplane "rev up its motors, as if to takeoff; then the motors went to idle, then they revved up again and the plane left." The witness saw the airplane "leave the runway going west. When it reached an altitude of 100 to 150 feet [above the ground] with its nose up, it started to wing over to the right." The witness then saw the airplane "nosing straight down into the ground." The witness said that he did not see the airplane hit the ground because of the topography of the area. When the witness arrived at the accident site, "the plane was engulfed in flames."

Personnel information

The instructor pilot was employed by the Purdue University's Department of Aviation Technology, as an Aviation Education Specialist 2, a non-tenure position. According to the Department's Chairperson, the instructor pilot had been recommended as an instructor candidate, by the department, on his graduation from Purdue University in May 1995. At that time, the instructor pilot did not have an instructor rating. During the summer months of 1995, the instructor pilot attended flight training courses in multi-engine jet airplanes, receiving ratings in the Beech 400 and Mitubishi MU-300 airplanes. The instructor pilot received his instructor certificate, with a multi-engine instructor rating, on June 30, 1995. On August 19, 1995, he received his single-engine land instructor pilot rating. The instructor pilot began instructing part-time for the Department of Aviation Technology in September 1995. He remained a part- time instructor with the department over the next 12 months. During that time, on February 8, 1996, the instructor pilot received his instrument instructor rating. In the Fall of 1996, the instructor pilot accepted a full-time position with the Department of Aviation Technology. He gave instruction to students seeking private, instrument, and commercial pilot certificates. The instructor pilot began his multi-engine instructor check out for the university on July 22, 1997. The instructor pilot received 3.3 hours of dual instruction in the Beech 76 prior to his check flight.

The instructor pilot passed the department's standardization check flight, as a multi-engine flight instructor under 14 CFR Part 141, on July 31, 1997. The standardization flight was given by the department's chief pilot. The instructor pilot began giving multi-engine flight instruction in accordance with the department's course curriculum on September 3, 1997.

The instructor pilot's logbook indicated that he had accumulated a total flying time of 1,059.4 hours as of September 11, 1997. The record showed that of the total flight time, 213.8 hours was in multi-engine land airplanes, 22.5 hours was in a Beech 76.

The instructor pilot's logbook showed that the he had accumulated 586.0 hours as a flight instructor. The record showed that of the total instructor time, 7.2 hours was in a Beech 76 airplane. All of the time was logged between September 3, 1997 and the date of the accident.

The dual student held a temporary commercial single-engine land, instrument airplane pilot certificate, issued on August 6, 1997. At the time of the accident, the student enrolled in Purdue University's AT-353, Multi-engine Land Class.

The dual student pilot's logbook indicated that he had accumulated a total flying time of 243.2 hours as of September 11, 1997. The last three entries in the logbook were dual flights logged in a Beech 76 with the instructor pilot, totalling 2.7 hours.

Aircraft information

The airplane was one of two Beech 76 airplanes owned, operated, and maintained by Purdue University's Department of Aviation Technology. The airplane was used primarily as a trainer for students enrolled in the AT-353 course to receive their multi-engine land rating. The airplane was being maintained on a continuous maintenance schedule, requiring "event" inspections to be performed approximately every 100 hours. The airplane had previously undergone an event inspection on September 3, 1997.

Wreckage and impact information

The NTSB on scene investigation began on September 12, 1997, at 1430 est.

The accident site was in a grass field located 130 feet northwest of the parallel taxiway for runways 23-05, abeam the B-4 taxiway, on the Purdue University Airport. The airplane's main wreckage was located approximately 3,063 feet down the runway from the alpha intersection, and 404 feet northwest of the runway centerline on a 321-degree magnetic heading.

The accident site began 110 feet from the northwest edge of the parallel taxiway. A ground scar, 33 and 1/2 feet long, by 6 feet wide, ran northwest along a 321-degree magnetic heading toward the main airplane wreckage. Witness marks corresponding to the right wing tip, right propeller, nose of the airplane and left propeller, were found within the ground scar path and lined up on a magnetic heading of 321-degrees. The airplane's impact heading was approximately 051-degrees.

Pieces of green glass and fiberglass from the right wing tip were observed at point where the ground scar began. The aft half of the right wing tip was located on the north side of the ground scar approximately 14 and 1/2 feet from the scar's origination. The wing tip piece was broken chordwise, along the rivet line. A 21 inch diameter hole was lo