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ASN Wikibase Occurrence # 215169
Last updated: 24 April 2019
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Date:06-SEP-2018
Time:10:50
Type:Avid Magnum
Owner/operator:Private
Registration: N2137G
C/n / msn: 0095
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Wyman Township, Bigelow Mountain, ME -   United States of America
Phase: En route
Nature:Private
Departure airport:Rangeley, ME (M57)
Destination airport:Greenville, ME (3B1)
Investigating agency: NTSB
Narrative:
The pilot reported that, after the sky cleared, he departed the airport following another airplane as a flight of two. During the flight, they approached a ridge with no significant turbulence or issues. He added that they were suddenly in instrument meteorological conditions (IMC), and the lead airplane disappeared. He immediately changed course 10° to the left, and as he transitioned to instrument flying, the airplane encountered a downdraft. Shortly thereafter, the windscreen “filled with trees,” which he estimated were less than a 100 ft away. He pitched the nose up to dissipate energy, and the airplane subsequently impacted trees and terrain. 
The airplane sustained substantial damage to both wings.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
The nearest official weather reporting station, which was 16 miles southwest of the accident site, reported, about the time of the accident, 10 miles visibility, temperature 70°F, dew point 66°F, a broken layer at 2,700 ft, a second broken layer at 3,200 ft, and an overcast layer at 4,100 ft. Although these were marginal visual flight rules conditions, given the mountainous terrain, the pilot should have expected that the mountain peaks may become obscured, and with a 4° temperature/dew point spread that visibility conditions could change rapidly.
The pilot recommended that he should have flown his original flight plan, which was at a lower altitude so that he could have avoided unexpected and unpredicted winds and entering IMC.

Probable Cause: The pilot’s improper decision to initiate the flight in marginal visual flight rules over mountainous terrain, which resulted in an inadvertent encounter with instrument meteorological and downdraft conditions and the subsequent controlled flight into trees and terrain.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20180906X60001&key=1
https://www.google.com/maps?oe=UTF-8&hl=en-us&client=safari&um=1&ie=UTF-8&fb=1&gl=us&entry=s&sa=X&ll=45.1472769,-70.2892339&z=13&ftid=0x4cb0e3b851a375df:0x4c3c50dfb627432b&q=Mt+Bigelow,+Northwest+Somerset,+ME+04961&gmm=CgIgAQ%3D%3D&t=p&ved=2ahUKEwjY7by2tafdAhUOLXwKHRQ3CyYQ8gEwAXoECAsQEQ

FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=2137G

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 6 months
Download report: Final report


Images:


Photo: FAA

Revision history:

Date/timeContributorUpdates
06-Sep-2018 22:24 Geno Added
06-Sep-2018 23:23 Geno Updated [Aircraft type, Registration, Cn, Operator, Location, Nature, Source, Damage, Narrative]
07-Sep-2018 12:04 Iceman 29 Updated [Source, Embed code]
23-Mar-2019 09:04 ASN Update Bot Updated [Time, Operator, Departure airport, Destination airport, Source, Embed code, Narrative, Accident report, ]
23-Mar-2019 10:06 harro Updated [Source, Embed code, Narrative, Photo]

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