Wednesday, November 30, 2011

Piper PA-32RT-300T Turbo Lance II, N36824: Accident occurred November 29, 2011 in Hailey, Idaho.

http://registry.faa.gov/N36824 

NTSB Identification: WPR12LA048
14 CFR Part 91: General Aviation
Accident occurred Tuesday, November 29, 2011 in Hailey, ID
Probable Cause Approval Date: 02/14/2013
Aircraft: PIPER PA-32RT-300T, registration: N36824
Injuries: 1 Serious,1 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

During takeoff from an airport in a narrow valley on a dark night, the pilot lost sight of the lights around the runway environment while he attempted to engage the autopilot to assist in his navigation of the pre-programmed route. When he determined that his first attempt to engage the autopilot had not been successful, the pilot repeated the steps of the autopilot engagement process. As the pilot was completing his second attempt to engage the autopilot, the tower air traffic controller asked him if he was making a turn to the downwind leg. About the same time, the terrain warning signal on one of the airplane’s global positioning system units began to sound. The pilot then realized that while he was trying to engage the autopilot, the airplane’s heading had drifted and the airplane was headed toward rapidly rising terrain. Because it appeared to the pilot that he would not be able to avoid that terrain, he slowed the airplane and performed an emergency landing on “rough and comparatively level” snow-covered ground.

Several of the autopilot components and associated flight instruments were examined and tested; however, there was no evidence of preaccident mechanical malfunctions or failures that would have precluded normal operation or engagement. It is likely that the pilot's distraction with the autopilot engagement resulted in his failure to maintain his course alignment and clearance from terrain.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to maintain course heading and terrain clearance because he was distracted by efforts to engage the autopilot shortly after takeoff on a dark night in mountainous terrain.

On November 29, 2011, about 1900 mountain standard time, a Piper PA-32RT-300T, N36824, impacted the terrain during controlled flight about one mile east of Friedman Memorial Airport, Hailey, Idaho. The pilot received minor injuries, his passenger received serious injuries, and the airplane, which was owned and operated by the pilot, sustained substantial damage. The 14 Code of Federal Regulations Part 91 personal transportation flight, which had just departed Hailey for Nampa, Idaho, was being operated in night visual meteorological conditions. No flight plan had been filed.

According to the pilot, he had planned to depart Hailey while it was still light, but a delay in his passenger’s activities resulted in a takeoff after dark. Prior to departing Hailey, he set up the entire route from Hailey through the instrument approach into Nampa, on his panel-mount GNS480 Global Positioning System (GPS), and then set up his yoke-mounted GPSMAP496 as a backup. His plan was to engage the autopilot soon after takeoff, and then to rely primarily on the coupled autopilot to maintain his heading in the narrow valley south of the airport, and to track the rest of the preset route. After listening to the Automatic Terminal Information Service recording, he continued with his plan to takeoff to the south in good visibility, with a tailwind of about 7 knots, on what he characterized as a dark night. After liftoff, because of the airplane’s light weight (two occupants), and the higher than standard performance capabilities resulting from the cold ambient air temperature, the airplane climbed rapidly with a nose high pitch attitude. As a result of the high pitch attitude, the pilot lost direct visual reference with the lights around the runway environment before the airplane reached the departure end of the runway. Once he lost sight of the runway environment, the pilot transferred his attention, and his reference for controlled flight, to the airplane’s instrument panel. During that process, the pilot attempted to engage the autopilot, so that he could rely on it to navigate the narrow valley running south from Hailey. Because the autopilot did not engage on the first attempt, the pilot went through the autopilot activation procedure a second time. Just as he was coming to the end of that process, the Hailey Tower controller asked him if he was turning downwind. About the same time, the GPSMAP496 terrain warning signal started sounding, and at that point in time that the pilot realized that while he was focused on getting the autopilot engaged, the airplane had turned from its original heading, and that it was heading east toward rapidly raising terrain. When the pilot saw the terrain, he quickly reached the conclusion that he would not be able to avoid it, so he slowed the airspeed to about 65 knots, and maneuvered the airplane toward an area of comparatively level ground, where he executed a controlled crash on the snow-covered hillside.

Because the pilot was not sure if there had been something wrong with the airplane’s Century 2000 autopilot system, or whether he simply had not placed the autopilot engagement switch fully in the engage position, during the postaccident investigation process the NTSB Investigator-In-Charge (IIC) had a number of the airplane’s components removed and tested at Century Flight Systems in Mineral Wells, Texas. The components that were taken to Century Flight Systems for testing under the direct oversight of another NTSB Accident Investigator were as follows: 1. 1D937-2050-311FF18 Flight Computer (s/n 2178G); 2. 52D67 Attitude Gyro (s/n T72374M); 3. 52D254 Directional gyro (s/n A6156G); 4.1C784-2-879 Roll Servo (s/n 1501; 5. 1C784-3-1052 Pitch Servo (s/n 1511). Although the test sequence found that impact damage kept the attitude gyro from erecting after spin-up, and that impact damage to two of the male electrical connector pins on the directional gyro resulted in no electrical output to the test screen, all other components showed normal, in specification, results, and no preimpact anomalies were found that would have kept the autopilot from engaging.

When the pilot completed the RECOMMENDATIONS section of the NTSB Form 6120.1 (Pilot/Operator Aircraft Accident/Incident Report), he made the following two recommendations: 1. Do not depart an airport in mountainous areas when single pilot and mountainous terrain is within 5 nautical miles of the airport; 2. Do not troubleshoot discrepancies within 5 nautical miles of the terrain, instead treat any discrepancy as an inoperable item.


  NTSB Identification: WPR12LA048 
 14 CFR Part 91: General Aviation
Accident occurred Tuesday, November 29, 2011 in Hailey, ID
Aircraft: PIPER PA-32RT-300T, registration: N36824
Injuries: 1 Serious,1 Minor.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On November 29, 2011, about 1900 mountain standard time, a Piper PA-32RT-300T, N36824, impacted the terrain about one mile east of Friedman Memorial Airport, Hailey, Idaho. The pilot received minor injuries, his passenger received serious injuries, and the airplane, which was owned and operated by the pilot, sustained substantial damage. The 14 Code of Federal Regulations Part 91 personal transportation flight, which had just departed Hailey for Nampa, Idaho, was being operated in night visual meteorological conditions. No flight plan had been filed.

According to the pilot, during the initial climb over the valley that extends south from Hailey, he was focused on trying to get the autopilot system set up in a manner that would allow it to be used to direct the airplane to Nampa. During the time that the pilot was focused on the autopilot, the airplane began turning to the left without him being aware of it. As the airplane continued to turn, it approached the steeply rising terrain to the east of the airport. The passenger, who was looking outside, noticed the oncoming terrain and made the pilot aware of the situation. When the pilot saw the terrain, he quickly reached the conclusion that he was not going to be able to avoid it, so he maneuvered the airplane into a controlled crash.

 
IDENTIFICATION
  Regis#: 36824        Make/Model: PA32      Description: PA-32 Cherokee Six, Six, Saratoga, Turbo
  Date: 11/30/2011     Time: 0156

  Event Type: Incident   Highest Injury: Minor     Mid Air: N    Missing: N
  Damage: Unknown

LOCATION
  City: HAILEY   State: ID   Country: US

DESCRIPTION
  AIRCRAFT CRASH LANDED IN A REMOTE AREA, NEAR HAILEY, ID

INJURY DATA      Total Fatal:   0
                 # Crew:   2     Fat:   0     Ser:   0     Min:   2     Unk:    
                 # Pass:   0     Fat:   0     Ser:   0     Min:   0     Unk:    
                 # Grnd:         Fat:   0     Ser:   0     Min:   0     Unk:    

WEATHER: VFR

OTHER DATA
  Activity: Pleasure      Phase: Unknown      Operation: OTHER


  FAA FSDO: BOISE, ID  (NM11)                     Entry date: 11/30/2011 
 



The Federal Aviation Administration and the Clark County Sheriff's Office are investigating the crash of a small plane Tuesday night. The sheriff's office says the call came in just after 7 PM that a small plane went down on the mountain just east of Hailey.

The pilot, 56-year-old Paul Tower of Boise, told officials that he tried to activate the plane's autopilot after takeoff from Friedman Memorial Airport to a route Tower programmed before takeoff. Tower said it didn't engage correctly and the plane banked left sharply. Tower said he could see the mountain in his landing lights so he pulled up to slow the plane. The aircraft hit the mountain on the ridge at the top of Water Gulch.

Tower and his passenger, 40-year-old Christina Rathbun of Boise were taken to St. Luke's Wood River Medical Center by helicopter. They were later flown to St. Luke's in Boise. 

HAILEY, IDAHO  - Two people from Boise were hurt after their private plane crashed near Hailey last night.

The Blaine County Sheriff's Office said 56–year–old Paul Tower was the pilot of the plane.

Police said he attempted to activate the auto pilot just after take off from the Friedman Memorial Airport.

He set a pre programmed course when he noticed the auto pilot did not seem to engage correctly.

Police said the plane then banked sharply to the left and he could see the mountain in his landing lights.

He pulled up to slow the plane and the plane impacted the mountain on the ridge at the top of water gulch.

Police said the passenger in the plane was 40–year–old Christina Rathbun.

Both individuals were taken to St. Luke's in Boise.

The crash is still under investigation.
 
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