# NTSB FTW98FA256: Eurocopter AS350BA, N911VA, La Gloria, TX, June 5, 1998

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: June 5, 1998, 05:49 local (10:49 UTC)
- Place: La Gloria, TX
- Coordinates: 26.580923, -98.5205 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.5809&lon=-98.5205&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report May 30, 2001
- Report: Approved by Office Director
- NTSB case key (mKey): 20424
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW98FA256
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20424/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=20424
- Page: https://openairdocs.org/ntsb/FTW98FA256

## Probable cause

the pilot's continued flight into adverse weather conditions resulting in a loss of control due to spatial disorientation.  Contributing factors were the dark night illumination, the lack of visual cues, the pilot's lack of total instrument time, and the pressure induced by the medical emergency to complete the medical evacuation.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight encounter with weather, cruise
  - light condition - dark night (contributing factor)
  - weather condition - haze/smoke (contributing factor)
  - flight into known adverse weather - continued, pilot in command
  - visual/aural perception, pilot in command (contributing factor)
  - pressure induced by conditions/events (contributing factor)
- Loss of control - in flight, maneuvering
  - aircraft control - not maintained, pilot in command (cause)
  - spatial disorientation, pilot in command (cause)
  - lack of total instrument time, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - ground

## Analysis

The 2,905-hour instrument rated commercial helicopter pilot encountered an area of limited visibility during a dark night flight over an unlit, very sparsely populated, rural area while en route to evacuate a truck driver injured in a highway accident.  The helicopter crashed 19 miles west of the truck accident site, indicating that the pilot failed to recognize his intended destination and flew past it.  The helicopter impacted trees and terrain in a left turn in a 85 to 95 degrees nose down attitude.  The pilot had accumulated a total of 4 hours of actual and 45 hours of simulated instrument flight time, none of it within the 90 days preceding the accident.  The pilot was reported to have been concerned about night flights in the area due to the lack of lights on the ground to maintain visual reference. Another helicopter pilot stated that 'at night the area west of the highway is a big black hole.'  No discrepancies were found that could have prevented normal flight operations.  The pilot who flew the helicopter prior to the accident flight stated that 'the aircraft flew well and responded normally.'  The visibility had been severely restricted by thick smoke from fires in Mexico.  No distress calls were received from the helicopter.  There were no reported eyewitnesses to the accident.

## Factual narrative

HISTORY OF FLIGHT

On June 5, 1998, at 0549 central daylight time, a Eurocopter AS350BA medical ambulance helicopter, N911VA, was destroyed upon impact with trees and terrain near La Gloria, Texas.  The instrument rated commercial pilot and two medical technicians on board the helicopter were fatally injured.  The helicopter was owned by Metro Aviation of Shreveport, Louisiana, and operated by Tex-Air Helicopters of Houston, Texas.  Dark night visual meteorological conditions prevailed for the 14 Code of Federal Regulations Part 91 positioning flight for which a company VFR flight plan was filed.  The flight departed from a heliport near Harlingen, Texas, at 0514, with a location known as Humble Kelsey, located approximately 8 nautical miles to the northeast of La Gloria along Highway 755, as its intended destination.

The helicopter was dispatched to pick up and transport the driver of an 18-wheeler tanker truck, who had been seriously injured when he lost control of his truck while driving in reduced visibility on Highway 755.  The pilot was not provided the coordinates of the truck accident site; however, he was familiar with the town of La Gloria, Texas, which he planned to use as the initial point for locating Highway 755 prior to proceeding northeast bound towards Humble Kelsey to pick up the injured truck driver.  The helicopter, operating under the call sign "Air Care One," departed its home base heliport with 1 hour and 55 minutes of fuel on board.  At 0529, the pilot reported to his dispatcher that the flight was en route over the Edinburg Airport, estimating arrival at the accident site in 16 minutes.  In the last position report to his home base at 0539, the pilot reported that he was "5 minutes out" from his destination and announced that he was "switching to ground."

The helicopter was assigned a mode C transponder code of 5377.  Air Traffic Control (ATC) radar tracked the helicopter from 05:19:56 to 05:34:15 flying on a west northwest heading from Harlingen toward La Gloria.  During this time period, the helicopter's altitude remained between 700 feet and 1,100 feet MSL.  Radar contact was then lost until 05:47:06 when one radar return was recorded which indicated the helicopter was at 1,800 feet, approximately 2 miles southeast of the site where it crashed.  Two-way radio communication was not established between the helicopter and any ATC facility in the area.  The helicopter failed to arrive at its destination and a search was initiated.

The wreckage of the helicopter was located 30 hours after the accident in a mesquite covered sparsely populated rural area of Starr County, Texas.  The accident site was approximately 19.0 nautical miles west of the flight's intended destination, the truck accident location.

There were no reported eyewitnesses to the accident.

PERSONNEL INFORMATION

The 46-year old commercial pilot, who was occupying the right seat of the helicopter, had been employed by the operator since January 1998.  He received his commercial pilot certificate on December 13, 1996.  According to the operator, the pilot had accumulated a total of 2,950 flight hours, of which 54 hours were in the same make and model as the accident helicopter.  The pilot had accumulated a total of 4 hours of actual and 45 hours of simulated instrument flight time.  The pilot logged no actual or simulated instrument time in the 90 days preceding the accident.  The pilot had accumulated a total of 30 hours of night flight, of which 20 hours were accumulated during the preceding 90 days.

The pilot received a helicopter instrument rating on January 5, 1998, prior to his employment with Tex-Air Helicopters.  During his training in preparation for his instrument rating, the pilot received a total of 15.4 hours of ground instrument training and a total of 5.0 hours of instrument flight training prior to taking his instrument check ride.  The operator of the training facility that provided the instrument training reported that the pilot failed his first instrument check ride due to deficiencies in basic instrument proficiency and ADF navigation.  This check ride was 1.2 hours in duration.  The pilot was provided an additional hour of remedial ground school and an additional 1.3 hours of remedial flight training.  The pilot was reported to have satisfactory completed the second check ride, which was given two days after the first check ride and lasted 0.9 hours.  Including the two check rides, the pilot accumulated a total of 8.4 hours of instrument flight time during this training.

Interviews of the pilot's co-workers revealed that the pilot was very concerned about night flights in the sparsely populated areas north of the Rio Grande Valley in southwest Texas due to the lack of lights on the ground to maintain visual reference.  One of the other pilots told the FAA inspector that "at night the area west of the Interstate highway is a big black hole."

AIRCRAFT INFORMATION

The 1981 model helicopter, serial number 1446, had accumulated a total of 4,752.7 flight hours (1,565.0 Hobbs meter hours) at the time of the accident.  The helicopter was manufactured in France and re-assembled in Grand Prairie, Texas, on February 25, 1982.  The helicopter was being maintained under the manufacturer's maintenance program.  The last scheduled maintenance performed on the helicopter was a 100-hour inspection, which was completed on April 17, 1998, at 4,706.2 hours, 46.5 hours prior to the accident.  The aircraft logbook was recovered at the accident site.  According to the operator, and as confirmed by examination of the aircraft logbook, there were no open deferred maintenance items on the helicopter at the time of the accident.

The 641-horsepower Turbomeca Arriel 1B turboshaft engine, serial number 801, was manufactured in France, on August 24, 1984.  The engine had accumulated a total of 4,156.9 hours since new.  The last overhaul was completed on June 16, 1994, at 2,997.8 hours.  The last engine inspection was completed at 4,062.0 hours, on April 17, 1998.

The basic empty weight of the helicopter was 3,079 pounds, and the maximum gross weight was 4,630 pounds.  Weight and balance calculations were performed using figures provided by the operator.  The aircraft was found to be within its weight and balance limits at the time of the accident.

The pilot who flew the helicopter prior to the accident flight on the day before the accident was asked by the NTSB investigator-in-charge (IIC) to provide a statement regarding the condition of the aircraft.  The pilot stated that "the aircraft flew well and responded normally."  The pilot further stated that "no discrepancies were noted during the flight."

The maintenance records for the helicopter were initially reviewed by the FAA inspector who responded to the accident site.  The records were later forwarded to the NTSB IIC for further examination.  Review of the maintenance records for the helicopter and powerplant did not reveal any evidence of overdue inspections or uncorrected discrepancies that could have contributed to the accident.

The helicopter was equipped for night flights.  Besides the on-board medical equipment installed, the following optional equipment was installed in the helicopter: a 3-axis (pitch, roll, yaw) auto pilot system, a strobe light system, a radar altimeter, an EMS lighting system, a GPS with moving map display, and an air conditioner.

METEOROLOGICAL INFORMATION

McAllen, Texas, located 46 nautical miles southeast (132 degrees) of the accident site, was the nearest weather reporting station to the accident site.  At 0553, McAllen was reporting a broken ceiling at 1,400 feet, with a visibility of 5 statute miles.  The temperature to dew point spread was reported as 1 degree.

A farm worker residing at the Diamond O Ranch, approximately 11 miles southeast of the accident site, reported that visibility on the day of the acc

## Aircraft

- Registration: [N911VA](https://openairdocs.org/deregistered/N911VA-1999-02-04), registration cancelled 1999-02-04, S/N 1446 (OpenAirDocs)
- Reported make and model: Eurocopter AS350BA
- Registry model: [Aerospatiale AS350B](https://openairdocs.org/model/aerospatiale-as350b) (registry code 8680800) (OpenAirDocs)
- Category: Helicopter
- Serial number: 1446
- Airframe hours: 4753
- Engines: Turbomeca ARRIEL 1B 641 horsepower turbo shaft
- Damage: Destroyed
- Fire: On-Ground
- Flight: Positioning, Part 91
- Operator: Edward L. Behne, doing business as Tex-Air Helicopters Inc.
- Registered owner: Metro Aviation Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, April 17, 1998, 46 hours before
- Departed: 78TS, HARLINGEN, TX
- Destination: NONE, LA GLORIA, TX
- Flight plan: Company VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; commercial; airplane ratings: single-engine land; instrument ratings: helicopter, airplane; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 2,950 total, 54 in this make and model, 2,605 as pilot in command, 27 in the last 90 days, 5 in the last 30 days

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 120° at 8 knots
- Visibility: 5 statute miles
- Lowest ceiling: 1,400 ft broken
- Temperature: 81 °F, dew point 79 °F
- Altimeter: 29.00 inHg
- Observed at: MFE, 46 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19980605012429A](https://openairdocs.org/incident/19980605012429A), Jun 5, 1998: Snias AS350BA, La Gloria, TX, Destroyed, 3 fatal. Air ambulance was en route to accident when it crashed under unknown circ, all 3 POB suffered fatal inj. (.4) on June 5, 1998, at approximately 0549 central…

## Docket (86 files)

The files NTSB released with the investigation on May 15, 2001, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=20424.

- Supplement A (item 1, .PDF, 271 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139064&FileExtension=.PDF&FileName=Supplement%20A-Master.PDF
- Supplement B (item 2, .PDF, 407 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139065&FileExtension=.PDF&FileName=Supplement%20B-Master.PDF
- Supplement G (item 3, .PDF, 106 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139066&FileExtension=.PDF&FileName=Supplement%20G-Master.PDF
- Supplement S (item 4, .PDF, 72 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139067&FileExtension=.PDF&FileName=Supplement%20S-Master.PDF
- Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2 (item 5, .PDF, 606 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405027&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1%2F2-Redacted.PDF
- Materials Laboratory Factual Report (item 6, .PDF, 243 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405028&FileExtension=.PDF&FileName=Materials%20Laboratory%20Factual%20Report-Redacted.PDF
- Materials Laboratory Factual Report, Figure 1 (item 7, .PDF, 30 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139070&FileExtension=.PDF&FileName=Materials%20Laboratory%20Factual%20Report,%20Figure%201-Master.PDF
- Witness Statements (item 8, .PDF, 106 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405029&FileExtension=.PDF&FileName=Witness%20Statements-Redacted.PDF
- Weather Reports & Records (item 9, .PDF, 2.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139072&FileExtension=.PDF&FileName=Weather%20Reports%20%26%20Records%20-Master.PDF
- Maps, Charts (item 10, .PDF, 408 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139073&FileExtension=.PDF&FileName=Maps,%20Charts-Master.PDF
- Reports From FAA (Radar Data) (item 11, .PDF, 256 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405030&FileExtension=.PDF&FileName=Reports%20From%20FAA%20(Radar%20Data)-Redacted.PDF
- Reports From Operator (item 12, .PDF, 668 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405031&FileExtension=.PDF&FileName=Reports%20From%20Operator-Redacted.PDF
- Airframe Manufacturer's Report (item 13, .PDF, 168 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405032&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report-Redacted.PDF
- Airframe Manufacturer's Report, Photos 1 & 2 (item 14, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139077&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%201%20%26%202-Master.PDF
- Airframe Manufacturer's Report, Photos 3 & 4 (item 15, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139078&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%203%20%26%204%20-Master.PDF
- Airframe Manufacturer's Report, Photos 5 & 6 (item 16, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139079&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%205%20%26%206-Master.PDF
- Airframe Manufacturer's Report, Photos 7 & 8 (item 17, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139080&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%207%20%26%208-Master.PDF
- Airframe Manufacturer's Report, Photos 9 & 10 (item 18, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139081&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%209%20%26%2010-Master.PDF
- Airframe Manufacturer's Report, Photos 11 & 12 (item 19, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139082&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2011%20%26%2012-Master.PDF
- Airframe Manufacturer's Report, Photos 13 & 14 (item 20, .PDF, 55 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139083&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2013%20%26%2014%20-Master.PDF
- Airframe Manufacturer's Report, Photos 15 & 16 (item 21, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139084&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2015%20%26%2016%20-Master.PDF
- Airframe Manufacturer's Report, Photos 17 & 18 (item 22, .PDF, 28 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139085&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2017%20%26%2018-Master.PDF
- Airframe Manufacturer's Report, Photos 19 & 20 (item 23, .PDF, 39 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139086&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2019%20%26%2020-Master.PDF
- Airframe Manufacturer's Report, Photos 21 & 22 (item 24, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139087&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2021%20%26%2022-Master.PDF
- Airframe Manufacturer's Report, Photos 23 & 24 (item 25, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139088&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2023%20%26%2024-Master.PDF
- Airframe Manufacturer's Report, Photos 24 & 25 (item 26, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139089&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2024%20%26%2025%20-Master.PDF
- Airframe Manufacturer's Report, Photos 26 & 27 (item 27, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139090&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2026%20%26%2027%20-Master.PDF
- Airframe Manufacturer's Report, Photos 28 & 29 (item 28, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139091&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2028%20%26%2029%20-Master.PDF
- Airframe Manufacturer's Report, Photos 30 & 31 (item 29, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139092&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2030%20%26%2031-Master.PDF
- Airframe Manufacturer's Report, Photos 32 & 33 (item 30, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139093&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2032%20%26%2033-Master.PDF
- Airframe Manufacturer's Report, Photos 34 & 35 (item 31, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139094&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2034%20%26%2035%20-Master.PDF
- Airframe Manufacturer's Report, Photos 36 & 37 (item 32, .PDF): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139095&FileExtension=.PDF&FileName=Airframe%20Manufacturer%27s%20Report,%20Photos%2036%20%26%2037%20-Master.PDF
- Engine Report (item 33, .PDF, 364 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405033&FileExtension=.PDF&FileName=Engine%20Report-Redacted.PDF
- Engine Report, Attachment A, Photo 1 (item 34, .PDF, 46 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139097&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%201-Master.PDF
- Engine Report, Attachment A, Photo 2 (item 35, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139098&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%202-Master.PDF
- Engine Report, Attachment A, Photo 3 (item 36, .PDF, 46 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139099&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%203-Master.PDF
- Engine Report, Attachment A, Photo 4 (item 37, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139100&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%204-Master.PDF
- Engine Report, Attachment A, Photo 5 (item 38, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139101&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%205-Master.PDF
- Engine Report, Attachment A, Photo 6 (item 39, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139102&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%206-Master.PDF
- Engine Report, Attachment A, Photo 7 (item 40, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139103&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%207-Master.PDF
- Engine Report, Attachment A, Photo 8 (item 41, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139104&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%208-Master.PDF
- Engine Report, Attachment A, Photo 9 (item 42, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139105&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20A,%20Photo%209-Master.PDF
- Engine Report, Attachment B, Photo 1 (item 43, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139106&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%201-Master.PDF
- Engine Report, Attachment B, Photo 2 (item 44, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139107&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%202-Master.PDF
- Engine Report, Attachment B, Photo 3 (item 45, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139108&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%203-Master.PDF
- Engine Report, Attachment B, Photo 4 (item 46, .PDF, 46 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139109&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%204%20-Master.PDF
- Engine Report, Attachment B, Photo 5 (item 47, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139110&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%205-Master.PDF
- Engine Report, Attachment B, Photo 6 (item 48, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139111&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%206-Master.PDF
- Engine Report, Attachment B, Photo 7 (item 49, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139112&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%207-Master.PDF
- Engine Report, Attachment B, Photo 8 (item 50, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139113&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%208-Master.PDF
- Engine Report, Attachment B, Photo 9 (item 51, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139114&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%209-Master.PDF
- Engine Report, Attachment B, Photo 10 (item 52, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139115&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%2010-Master.PDF
- Engine Report, Attachment B, Photo 11 (item 53, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139116&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%2011-Master.PDF
- Engine Report, Attachment B, Photo 12 (item 54, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139117&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%2012-Master.PDF
- Engine Report, Attachment B, Photo 13 (item 55, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139118&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%2013-Master.PDF
- Engine Report, Attachment B, Photo 14 (item 56, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139119&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%2014%20-Master.PDF
- Engine Report, Attachment B, Photo 15 (item 57, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139120&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%2015-Master.PDF
- Engine Report, Attachment B, Photo 16 (item 58, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139121&FileExtension=.PDF&FileName=Engine%20Report,%20Attachment%20B,%20Photo%2016-Master.PDF
- Other Pertinent Forms and Reports - Aircraft Records (item 59, .PDF, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405034&FileExtension=.PDF&FileName=Other%20Pertinent%20Forms%20and%20Reports%20-%20Aircraft%20Records-Redacted.PDF
- Statement of Party Representatives to NTSB Investigation (item 60, .PDF, 378 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405035&FileExtension=.PDF&FileName=Statement%20of%20Party%20Representatives%20to%20NTSB%20Investigation-Redacted.PDF
- Release of Aircraft Wreckage, NTSB Form 6120.15 (item 61, .PDF, 167 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40405036&FileExtension=.PDF&FileName=Release%20of%20Aircraft%20Wreckage,%20NTSB%20Form%206120.15-Redacted.PDF
- Photo 1: Aerial view of the accident site. (DPS photo, no neg.) (item 62, .PDF, 53 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139125&FileExtension=.PDF&FileName=Photo%201%3A%20%20Aerial%20view%20of%20the%20accident%20site.%20%20(DPS%20photo,%20no%20neg.)-Master.PDF
- Photo 2: Aerial view of the accident site. (DPS photo, no neg.) (item 63, .PDF, 53 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139126&FileExtension=.PDF&FileName=Photo%202%3A%20%20Aerial%20view%20of%20the%20accident%20site.%20%20(DPS%20photo,%20no%20neg.)-Master.PDF
- Photo 3: View of the accident site. (item 64, .PDF, 53 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139127&FileExtension=.PDF&FileName=Photo%203%3A%20%20View%20of%20the%20accident%20site.-Master.PDF
- Photo 4: Another view of the wreckage. (item 65, .PDF, 63 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139128&FileExtension=.PDF&FileName=Photo%204%3A%20%20Another%20view%20of%20the%20wreckage.%20%20-Master.PDF
- Photo 5: View of the main rotor mast. (item 66, .PDF, 54 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139129&FileExtension=.PDF&FileName=Photo%205%3A%20%20View%20of%20the%20main%20rotor%20mast.%20-Master.PDF
- Photo 6: View of the main rotor starflex. (item 67, .PDF, 60 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139130&FileExtension=.PDF&FileName=Photo%206%3A%20%20View%20of%20the%20main%20rotor%20starflex.-Master.PDF
- Photo 7: View of the main transmission, head, and main rotor blades. (item 68, .PDF, 67 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139131&FileExtension=.PDF&FileName=Photo%207%3A%20%20View%20of%20the%20main%20transmission,%20head,%20and%20main%20rotor%20blades.-Master.PDF
- Photo 8: View of the top section of the main transmission. (item 69, .PDF, 70 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139132&FileExtension=.PDF&FileName=Photo%208%3A%20%20View%20of%20the%20top%20section%20of%20the%20main%20transmission.-Master.PDF
- Photo 9: View of the anti-vibration unit for the main rotor. (item 70, .PDF, 74 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139133&FileExtension=.PDF&FileName=Photo%209%3A%20%20View%20of%20the%20anti-vibration%20unit%20for%20the%20main%20rotor.-Master.PDF
- Photo 10: View of the landing gear cross tubes. (item 71, .PDF, 64 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139134&FileExtension=.PDF&FileName=Photo%2010%3A%20%20View%20of%20the%20landing%20gear%20cross%20tubes.-Master.PDF
- Photo 11: View of the crushed cockpit door for the left side. (item 72, .PDF, 70 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139135&FileExtension=.PDF&FileName=Photo%2011%3A%20%20View%20of%20the%20crushed%20cockpit%20door%20for%20the%20left%20side.%20-Master.PDF
- Photo 12: The ruler points to the buried skid tube. (item 73, .PDF, 62 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139136&FileExtension=.PDF&FileName=Photo%2012%3A%20%20The%20ruler%20points%20to%20the%20buried%20skid%20tube.%20-Master.PDF
- Photo 13: View of a buried right skid toe. (item 74, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139137&FileExtension=.PDF&FileName=Photo%2013%3A%20%20View%20of%20a%20buried%20right%20skid%20toe.%20%20-Master.PDF
- Photo 14: View of the servo upper control tube. (item 75, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139138&FileExtension=.PDF&FileName=Photo%2014%3A%20%20View%20of%20the%20servo%20upper%20control%20tube.%20%20-Master.PDF
- Photo 15: View of rotational score found on the driveshaft spine. (item 76, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139139&FileExtension=.PDF&FileName=Photo%2015%3A%20%20View%20of%20rotational%20score%20found%20on%20the%20driveshaft%20spine.-Master.PDF
- Photo 16: View of the control lever for the fuel flow. (item 77, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139140&FileExtension=.PDF&FileName=Photo%2016%3A%20%20View%20of%20the%20control%20lever%20for%20the%20fuel%20flow.%20%20-Master.PDF
- Photo 17: Another view of the engine. (item 78, .PDF, 61 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139141&FileExtension=.PDF&FileName=Photo%2017%3A%20%20Another%20view%20of%20the%20engine.%20%20-Master.PDF
- Photo 18: View of the engine exhaust duct. (item 79, .PDF, 65 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139142&FileExtension=.PDF&FileName=Photo%2018%3A%20%20View%20of%20the%20engine%20exhaust%20duct.%20%20-Master.PDF
- Photo 19: View of the engine shaft and exposed compressor. (item 80, .PDF, 63 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139143&FileExtension=.PDF&FileName=Photo%2019%3A%20%20View%20of%20the%20engine%20shaft%20and%20exposed%20compressor.%20%20-Master.PDF
- Photo 20: View of the axial compressor. (item 81, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139144&FileExtension=.PDF&FileName=Photo%2020%3A%20%20View%20of%20the%20axial%20compressor.-Master.PDF
- Photo 21: View of the remains of the tailboom. (item 82, .PDF, 74 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139145&FileExtension=.PDF&FileName=Photo%2021%3A%20%20View%20of%20the%20remains%20of%20the%20tailboom.-Master.PDF
- Photo 22: View of the vertical fin and tailboom. (item 83, .PDF, 70 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139146&FileExtension=.PDF&FileName=Photo%2022%3A%20%20View%20of%20the%20vertical%20fin%20and%20tailboom.-Master.PDF
- Photo 23: View of the tail rotor gear box assembly. (item 84, .PDF, 75 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139147&FileExtension=.PDF&FileName=Photo%2023%3A%20%20View%20of%20the%20tail%20rotor%20gear%20box%20assembly.%20%20-Master.PDF
- Photo 24: View of the tail rotor drive shaft. (item 85, .PDF, 65 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139148&FileExtension=.PDF&FileName=Photo%2024%3A%20%20View%20of%20the%20tail%20rotor%20drive%20shaft.%20%20-Master.PDF
- Photo 25: View of the tail skid. (item 86, .PDF, 72 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40139149&FileExtension=.PDF&FileName=Photo%2025%3A%20%20View%20of%20the%20tail%20skid.-Master.PDF

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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