Hailey-Friedman Memorial

The private pilot was returning to his home airport; the approach was normal, and the airplane landed within the runway touchdown zone markings and on the runway centerline. About midfield, the airplane started to drift to the right side of the runway, and during the landing roll, the nose pitched up suddenly and dropped back down. The airplane veered off the runway and impacted the 1,000-ft runway distance remaining sign and continued to travel in a righthand turn until it impacted a hangar. The airplane came to rest inside the hangar, and the damage to the structure caused the roof to collapse onto the airplane. A postaccident fire quickly ensued. The subsequent wreckage examination did not reveal any mechanical anomalies with the airplane's engines, flight controls, steering, or braking system. A video study was conducted using security surveillance video from a fixed-base operator located midfield, and the study established that the airplane was not decelerating as it passed through midfield. Deceleration was detected after the airplane had veered off the runway and onto the parking apron in front of the rows of hangars it eventually impacted. Additionally, video images could not definitively establish that the flaps were deployed during the landing roll. However, the flaps were deployed as the airplane veered off the runway and into the hangar, but it could not be determined to what degree. To obtain maximum braking performance, the flaps should be placed in the ”ground flap” position immediately after touchdown. The wreckage examination determined that the flaps were in the ”ground flap” position at the time the airplane impacted the hangar. Numerous personal electronic devices that had been onboard the airplane provided images of the passengers and unrestrained pets, including a large dog, with access to the cockpit during the accident flight. Although the unrestrained animals had the potential to create a distraction during the landing roll, there was insufficient information to determine their role in the accident sequence or what caused the delay in the pilot’s application of the brakes.

Weather reporting facilities reported icing conditions in the area of the accident site. The pilot of a Cessna Citation flying the same RNAV approach twenty minutes prior to the accident aircraft reported picking up light to occasional moderate rime ice. The last communication between the local air traffic controller and the accident pilot indicated that the flight was two miles south of the final approach fix. The controller inquired if the pilot had the runway in sight, and the pilot reported "negative, still IMC." A witness on the ground near the accident site reported that he heard the aircraft first then saw it at a low level below the cloud base flying in a southeasterly direction. The witness stated that the right wing was lower than the left as the aircraft continued to descend. The witness then noted that the wings were moving "side to side" (up and down) a couple of times before the nose of the aircraft dropped near vertical to the terrain. This witness reported hearing the sound of the engine running steady throughout the event. The wreckage was located in a flat open field about 3,000 feet south of the final approach fix coordinates. The aircraft was destroyed by impact damage and a post crash fire.

The aircraft departed controlled flight and crashed near Helendale, California. The captain and the first officer were killed, and the airplane was destroyed. The flight was operating under the provisions of 14 Code of Federal Regulations (CFR) Part 912 from San Bernardino County Airport (CNO), Chino, California, to Friedman Memorial Airport, Hailey, Idaho. Visual meteorological conditions prevailed for the flight, which operated on an instrument flight rules flight plan. A review of radar data and air traffic control (ATC) transcripts revealed that the flight departed CNO about 0858 and was cleared to climb to an altitude of 29,000 feet mean sea level (msl). About 0909:55, as the airplane was climbing through an altitude of 26,000 feet, the first officer requested a return to CNO. About 0910:01, the controller asked the first officer if he needed to declare an emergency, and the first officer replied that he did not. The controller then directed the flight crew to maintain an altitude of 24,000 feet. Mode C information for the flight showed that, from about 0910:12 to about 0910:59, the airplane descended from 26,500 to 24,000 feet at a rate of about 2,000 feet per minute (fpm). About 0911:08, the controller cleared the flight directly to HECTOR (a navigation fix) and asked the first officer to confirm that the airplane was in level flight at an altitude of 24,000 feet. The first officer did not respond. Radar data showed the airplane descending through 23,000 feet at a rate of about 6,500 fpm about that time. About 0911:24, while the airplane was descending at a rate of about 10,000 fpm, the first officer stated, “we’re declaring an emergency now.” No further transmissions were received from the airplane. No radar data were available after about 0911:35. Starting about 0911:47, mode C information was invalid. The airplane impacted high desert terrain (an elevation of 3,350 feet) about 3 miles southeast of Helendale. The accident site was located about 46 nautical miles (nm) north of CNO. A witness to the accident, who was located about 4.5 miles northwest of the accident site, stated that, after hearing the sound of a jet flying high overhead, he looked up and observed the accident airplane flying straight and level below a high, overcast cloud layer. He stated that the airplane then pitched “nose down a little” and “straightened again.” He also stated that, shortly thereafter, he observed the airplane’s nose pitch “straight down” until it impacted terrain. The witness reported that he did not notice whether the airplane was rotating about its longitudinal axis during the descent, but he did indicate that the airplane appeared to be intact without any components separating from the airplane during the descent. The witness added that he did not observe any smoke or fire before the airplane impacted terrain and that the airplane exploded into a “mushroom cloud” when it impacted terrain. San Bernardino County firefighters, who were performing controlled burns near the accident site, reported hearing an explosion about the time of the accident. The firefighters reported that they looked toward the direction of the explosion and saw a rising smoke cloud. None of the firefighters observed the airplane before the sound of the explosion. The firefighters drove to the accident site and were the first to arrive there. The firefighters extinguished small fires that had erupted as a result of the crash.

The aircraft was VFR inbound to the Hailey airport when the pilot contacted the tower at 1247 and reported 10 miles south. During the next 7 minutes the pilot and controller communicated back and forth and the pilot never visually acquired the airport. A number of witnesses located north of the airport observed the aircraft flying northbound along the highway into upsloping, mountainous terrain at an estimated altitude of 400 feet above ground, and with the landing gear extended and the engines developing power. The aircraft was described as low and slow and was observed to dip its wings during a left turn and then descend steeply to the ground. The aircraft impacted terrain in a steep nose down attitude. There was no evidence of flight control or powerplant malfunctions. High density altitude conditions existed at the accident site. Toxicological examination revealed a finding of 0.068 ug/ml and 0.183 ug/ml of Chlorpheniramine (an over-the-counter antihistamine) in kidney and heart tissue respectively.

Because of the failure of the thrust reverser relay circuit board, the thrust reversers failed to deploy when selected by the pilot. Because the reversers failed to deploy, the 'reversers in transition' lights, and the 'reversers deployed' lights did not illuminate. Even though the aircraft flight manual warns against moving the reverser throttle levers into the power range without the illumination of these lights, the pilot did so anyway. The pilot continued to select reverse power even after the activation of the throttle mismatch warning horn, resulting in an increase in forward thrust while attempting to stop. During this sequence of events the second-in-command moved the parking brake lever to full override, locking the main wheel brakes and overriding the antiskid system.

About 1100 mst, on February 15,1983, a Sierra Pacific Airlines DHC-6, operating as Transwestern Flight 868, crashed during its final approach to a landing on runway 31, 1.7 mile south of the Friedman Memorial Airport at Hailey, Idaho. Flight 868 was a regularly scheduled commuter passenger flight between Boise and Hailey, Idaho. There were two flightcrew members and six passengers on board the flight. One passenger escaped with minor injuries, but all the other occupants sustained serious injuries in the accident. There was no fire. About 800 feet above the small town of Bellevue, 2 miles south of the airport, the captain reduced power in order to configure the airplane for its final approach. Immediately afterward, the captain realized that he had lost eleva control of the airplane. The airplane nosed over and descended steeply. The captain attempted to control the pitch of the airplane by adding power; it began to recover but it crash landed on a highway in a slight nosedown attitude, with the right wing slightly down The airplane then veered off the highway, struck a 4-foot-high snowbank, and broke apart.

The aircraft crashed into the side of a mountain ridge during a VFR attempt to land at an airport with no instrument approach. The mountain ridge was obscured by broken clouds. The pilot had cancelled his IFR clearance, and during the descent to the airport, he had descended below clouds near the airport with clouds still obscuring some of the terrain. One mile visibility was a requirement for the VFR approach. According to witness statements, the aircraft continued to remain below the clouds and the pilot continued the approach even though he was not properly positioned to make a successful landing. The pilot had a partial occlusion of a coronary artery, but its relationship to the accident was not determined. The aircraft impacted at about 6,250 feet msl. The field elevation is 5,315 feet msl. The accident site was about 2 1/2 mi from the airport. The airport was located in a mountain valley about 1 to 1.25 mi wide. Also, the airport and surrounding terrain were covered with snow. Both pilots were killed.

While cruising by night from Salt Lake City to Hailey, the pilot failed to see and avoid mountainous terrain. The twin engine airplane struck the slope of a mountain and crashed near Shoshone, killing all three occupants.

While descending to La Grande Airport, the crew encountered poor weather conditions. Flying at low altitude above mountainous terrain, the twin engine airplane struck power cables and crashed in flames on a mountain. The aircraft was destroyed and all three occupants were killed.

While in cruising altitude, the left engine caught fire and exploded. Shortly later, the left wing separated. Out of control, the airplane dove into the ground and crashed near Fairfield, killing all five occupants.