SEA04MA167

NTSB accident investigation · Bell 407 · Battle Mountain, NV · August 22, 2004

Accident · FatalMajor investigationFinal report
Date
August 21, 2004, 23:58 local (Aug 22, 2004, 06:58 UTC)
Place
Battle Mountain, NV
Injuries
5 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N2YNBell 407
Weather
Visual (VMC) · Night/dark
Status
Completed · report January 26, 2006
Report
Approved by Office Director
Parties
Bell Helicopter, FAA, FSDO, Roll-Royce Corporation
FAA report
20040821020899A
Case key
59956

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The NTSB’s determination of the probable cause, and any contributing factors.

The pilot's failure to maintain clearance from mountainous terrain. Contributing factors were the pilot's improper decision to take the direct route over mountainous terrain, the dark night conditions, and the pressure to complete the mission induced by the pilot as a result of the nature of the EMS mission.

Analysis

The emergency medical services (EMS) helicopter departed for a night flight to transport an 11-day-old infant patient from a hospital in Battle Mountain, Nevada, to another in Reno, Nevada. No record was found indicating the pilot obtained a weather briefing before departure. The pilot had a choice of taking either a direct route that crossed a remote area of rugged mountainous terrain with maximum ground elevations of about 9,000 feet or a route that was about 10 minutes longer and followed an interstate highway with maximum ground elevations of about 6,000 feet. After takeoff, the pilot reported his departure to the Elko county dispatch center, stating that his estimated time en route was l hour 20 minutes. There were no further radio communications from the helicopter. Radar data, which show about 4 minutes of the helicopter's flight before coverage was lost due to mountainous terrain, are consistent with the flight following the direct route. A search was initiated about 4 hours after the helicopter did not arrive at the destination hospital, and the wreckage was located the following morning. The accident site was along the direct course line at an elevation of about 8,600 feet. Physical evidence observed at the accident site indicated that the helicopter was in level flight at impact and was consistent with controlled flight into terrain. No evidence was found of any preimpact mechanical discrepancies with the helicopter's airframe or systems that would have prevented normal operation. Rotational damage to the rotor blades and transmission components were consistent with normal engine operation at impact. The two closest aviation weather reporting stations, located 31 and 54 nautical miles (nm) from the accident site, both reported 10 miles visibility, clear skies below 12,000 feet, and no precipitation at the time of the accident. However, satellite images valid approximately 1 hour before the accident indicated cloud cover over the accident site. Additionally, weather radar images valid approximately 1.5 hours before the accident indicated light precipitation was present in the vicinity of the accident site. However, the exact weather conditions and cloud ceiling at the time and location of the accident could not be determined. If the pilot had obtained a weather briefing, he would likely have learned of the cloud cover and light precipitation present along his planned route of flight. Studies conducted by the National Transportation Safety Board and industry have shown that the urgent nature of the EMS mission can result in inaccurate/incomplete preflight planning, as well as poor pilot judgment. The fact that the patient was an infant may well have placed additional pressure on the pilot to take the direct route to arrive at the hospital sooner. The helicopter was not equipped with an enhanced ground proximity warning system (EGPWS), and none as required. If installed, an EGPWS would have alerted the pilot of high terrain ahead at least 35seconds before impact. Although the search for the helicopter was not initiated until about 4 hours after the accident (despite company flight-following procedures that indicated an aircraft should be reported missing as soon as it fails to make a required 15-minute position report), this accident was not survivable and a faster notification would not have changed the outcome.

Factual narrative

The factual narrative1,329 words

History of flight

On August 21, 2004, approximately 2358 Pacific daylight time, a Bell 407 helicopter, N2YN, operating as an air ambulance flight, impacted mountainous terrain in cruise flight and was destroyed about 27 nautical miles (NM) southwest of Battle Mountain, Nevada. The airline transport pilot, the two medical crewmembers, the infant patient being transported and the patient's mother, were fatally injured. The helicopter was operated by Jeflyn Aviation, Inc., of Boise, Idaho, dba Access Air. The purpose of the Title 14 CFR Part 135 flight was to transport the infant patient from Battle Mountain Hospital to Washoe Medical Center in Reno, Nevada. Dark night visual meteorological conditions prevailed for the 2338 departure from Battle Mountain Hospital. A company flight plan was filed.

According to Access Air personnel, the pilot reported for duty approximately 1930 at the company base located on the Elko Regional Airport in Elko, Nevada. At 2221, through Elko's Central Dispatch Authority (Elko Dispatch), Battle Mountain Hospital requested Access Air to transfer an 11-day-old infant patient to Reno. According to Elko Dispatch records, the helicopter departed Elko en route to Battle Mountain at 2237.

The helicopter landed on the pad at Battle Mountain Hospital approximately 2300. According to the grandmother of the infant patient, the nurse and paramedic went into the hospital and the pilot stayed with the helicopter. The nurse and paramedic spoke with her daughter, the infant's mother, and the grandmother overheard one of them say to her, "it is going to be a little bit rocky up there." The grandmother watched them board the helicopter and reported that her daughter was seated on a stretcher with an orange box behind her holding her infant in her arms. She also reported that the helicopter crew gave her daughter a headset to wear and told her that she could talk unless they asked her to be quiet. The grandmother watched the helicopter depart and stated that there were no unusual or strong winds at the time.

At 2338, the pilot reported his departure from Battle Mountain Hospital to Lander County dispatch and stated that his estimated time en route to Reno was 1 hour 20 minutes. (Battle Mountain is located in Lander County.) There were no further radio communications from the helicopter. The USAF 84th Radar Evaluation Squadron provided radar data which shows about 4 minutes of the helicopter's flight, beginning at 2344:51. The last radar return was at 2348:40, approximately 17 NM northeast of the accident site. The data shows the helicopter flying a magnetic course of about 232 degrees. The radar data are consistent with the helicopter flying a route commonly used by the operator, direct from Battle Mountain Hospital to Derby Field Airport, Lovelock, Nevada, then direct Washoe Medical Center in Reno.

The helicopter did not arrive at Washoe Medical Center, a search was initiated, and the wreckage of the helicopter was located on the morning of August 22, 2004. The accident site was along the direct course line from Battle Mountain Hospital to Derby Field Airport in Lovelock. The helicopter impacted rugged mountainous terrain on the eastern slope of the Tobin Range in Pershing County at a Global Positioning System (GPS) location of 40 degrees 27.147 minutes North, 117 degrees 29.517 minutes West, and an elevation of approximately 8,600 feet.

Personnel information

The pilot held an airline transport pilot certificate with an airplane multi-engine land rating, a Learjet type rating and commercial privileges in single engine land airplanes and helicopters. He was helicopter instrument rated. Additionally, he was a certified flight instructor with airplane single and multi-engine land and instrument airplane ratings. His most recent second class medical certificate was issued on February 2, 2004, with the restriction must wear corrective lenses.

According to a resume he provided to Access Air, the pilot received his helicopter flight training in the US Army. He served in the Army from October 1971 to November 1987 as a helicopter pilot in various positions including Medevac, VIP, Instructor Pilot and Instrument Flight Examiner. During this time period, he flew in the Republic of Korea, South Vietnam, Europe and the continental US in OH-58 and UH-1H helicopters. After leaving active duty, he entered the Alabama Army National Guard and from May 1988 to January 2000, he served as a pilot and instrument flight examiner in UH-1H and UH-60 helicopters. His total flight experience in military helicopters listed on the resume was 6,052 hours.

From November 1996 to November 1999, the pilot was employed flying Bell 206 and Sikorsky S-76 helicopters offshore in the Gulf of Mexico. His total flight experience listed on the resume in Bell 206 series helicopters was 665 hours and in Sikorsky S-76 helicopters was 970 hours. The resume did not indicate any previous experience flying the Bell 407.

The pilot was hired by Access Air in January 2003. He had no previous experience as a pilot for a commercial air ambulance service. He received initial training in the Bell 407 consisting of 16 hours aircraft ground training and 3 hours flight training and was approved to act as pilot in command of this helicopter under 14 CFR Part 135 on January 25, 2003. He received transition training in the Bell 206L3 consisting of 5 hours aircraft ground training and 1.2 hours flight training and was approved to act as pilot in command of this helicopter under 14 CFR Part 135 on March 30, 2003. He completed recurrent training for the Bell 407 on February 20, 2004, and for the Bell 206L3 on April 14, 2004.

During his first full year with Access Air, the pilot flew 116 hours, 91 hours in the Bell 407 and 25 hours in the Bell 206L3. A pilot information sheet completed by the pilot on January 24, 2004, indicated that he had a total flight time of 8,948 hours including 2,208 hours instrument flight time and 934 hours night flight time. From January 2004 to the day of the accident, the pilot accumulated an additional 87 hours with Access Air. Assuming these 87 hours were all in the Bell 407, at the time of the accident, the pilot had accumulated 178 hours flight time in the Bell 407, with 32 hours in the past 90 days and 9 hours in the past 30 days.

According to the manager of Access Air's Elko base, the duty schedule for the pilots was 7 days on, working 12 hour shifts, followed by 7 days off. The pilots worked day shift for 7 days, had 7 days off, and then worked night shift for 7 days. The day shift was from 7:30 am to 7:30 pm, and the night shift was from 7:30 pm to 7:30 am. The accident flight occurred on the third day of the pilot's week working the night shift. On the first day of his work week, he made one 0.2-hour flight. He made no flights on the second day of his work week. The accident flight was his first flight on the third day of his work week. According to the manager, the pilot did not have another job, and he would go home during the day when he was working the night shift. The pilot's residence was in Spring Creek, Nevada, located about 13 miles from the Elko Airport.

Aircraft information

The 1998 model Bell 407 helicopter, S/N 53239, was powered by one 650-horsepower Rolls Royce Corporation turbo-shaft 250-C47B engine, S/N CAE 847259, driving a four bladed main rotor system and a two bladed tail rotor. The helicopter was equipped with the instruments required for flight under Instrument Flight Rules (IFR) listed in FAR 91.205. It was also equipped with a Garmin GNC-250XL GPS/COM. This unit had no capability to show terrain on a moving map display.

Examination of the helicopter's maintenance records revealed that it received its most recent annual inspection on April 14, 2004, at an airframe total time of 2,143.5 hours and an engine total time of 2,056.4 hours. The most re

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight encounter with weatherCruise
Light condition - dark nightFactor
Weather condition - cloudsFactor
Planning/decision - improperPilot in commandFactor
Pressure induced by conditions/eventsPilot in commandFactor
In flight collision with terrain/waterCruise
Clearance - not maintainedPilot in commandCause
Terrain condition - mountainous/hillyFactor

Aircraft

Registration
N2YN
Reported as
Bell 407
Category
Helicopter
Serial number
53239
Airframe hours
2,361.2
Engine
Rolls-Royce 250-C47B, 650 horsepower, turbo shaft
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Operator
Jeflyn Aviation, Inc, doing business as Access Air
Registered owner
Crescent Leasing LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 5, 2004 · 31 hours before
Departed
Battle Mountain, NV
Destination
Reno, NV
Flight plan
Company VFR

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
54
Injuries
Fatal
Certificates
Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
April 14, 2004
Seat
Right
Toxicology
Performed
Flight hours
9,034 total · 178 in this make and model · 7,754 as pilot in command · 32 in the last 90 days · 9 in the last 30 days

Weather

Conditions
Visual (VMC) · Night/dark
Wind
170° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 43 °F
Altimeter
29.96 inHg
Observed at
KWMC, 31 nm away

Docket · 32

The files NTSB released with the investigation on May 12, 2005, on NTSB’s docket system: statements, records, photos and specialists’ reports. 28.0 MB in all.

Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1Item 1 · .PDF · 303 KBMeteorology 5 - Factual Report of Meteorology SpecialistItem 2 · .PDF · 928 KBInterview of Charles M. Young IIIItem 3 · .PDF · 180 KBInterview of Bruce AlumbaughItem 4 · .PDF · 107 KBInterview of Carrie McCoyItem 5 · .PDF · 77 KBInterview of Joanna HowardItem 6 · .PDF · 72 KBInterview of Juanita CrumItem 7 · .PDF · 45 KBMapsItem 8 · .PDF · 1.7 MBRadar DataItem 9 · .PDF · 6.1 MBEGPWS SimulationItem 10 · .PDF · 5.8 MBExcerpts from Aircraft Maintenance RecordsItem 11 · .PDF · 264 KBAircraft Daily Maintenance Reports 7/1/04-8/21/04Item 12 · .PDF · 2.1 MBPilot InformationItem 13 · .PDF · 1.1 MBExcerpt from Company Operations ManualItem 14 · .PDF · 75 KBToxicological ReportItem 15 · .PDF · 54 KBRelease of Aircraft Wreckage, NTSB Form 6120.15Item 16 · .PDF · 135 KBStatement of Party Representatives to NTSB InvestigationItem 17 · .PDF · 343 KBDigital Image 1. Aerial view of accident site.Item 18 · .PDF · 1.3 MBDigital Image 2. Aerial view of main wreckage.Item 19 · .PDF · 1.4 MBDigital Image 3. Forward lower fuselage wreckage.Item 20 · .PDF · 462 KBDigital Image 4. Left pedals.Item 21 · .PDF · 481 KBDigital Image 5. Main wreckage.Item 22 · .PDF · 470 KBDigital Image 6. Tailboom section.Item 23 · .PDF · 448 KBDigital Image 7. Rotational scoring on t/r driveshaft cover.Item 24 · .PDF · 427 KBDigital Image 8. Section of main rotor blade.Item 25 · .PDF · 479 KBDigital Image 9. Another section of main rotor blade.Item 26 · .PDF · 445 KBDigital Image 10. Main rotor head.Item 27 · .PDF · 456 KBDigital Image 11. Engine.Item 28 · .PDF · 451 KBDigital Image 12. ECU.Item 29 · .PDF · 470 KBDigital Image 13. Tail rotor.Item 30 · .PDF · 477 KBDigital Image 14. Landing gear pieces.Item 31 · .PDF · 420 KBDigital Image 15. Airspeed indicator.Item 32 · .PDF · 401 KB

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.