Date:	Sunday 2 October 2016
Time:	11:57
Type:	Cessna 208B Grand Caravan
Owner/operator:	Ravn Connect
Registration:	N208SD
MSN:	208B0491
Year of manufacture:	1995
Total airframe hrs:	20562 hours
Engine model:	Pratt & Whitney Canada PT6A-114A
Fatalities:	Fatalities: 3 / Occupants: 3
Aircraft damage:	Destroyed, written off
Category:	Accident
Location:	19 km NW of Togiak, AK -   United States of America
Phase:	En route
Nature:	Passenger - Scheduled
Departure airport:	Quinhagak Airport, AK (KWN/PAQH)
Destination airport:	Togiak Village Airport, AK (TOG/PATG)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
A Hageland Aviation Services Cessna 208 Caravan operating as Ravn Connect Flight 3153 from Quinhagak with two crew and one passenger onboard impacted mountainous terrain 12 statute miles northwest of its intended destination of Togiak. All three occupants died in the crash.
Flight 3153 had originated in Bethel, Alaska; made scheduled stops in Togiak and Quinhagak; and was scheduled to return to Togiak before returning to Bethel, the intended final destination for the day. The aircraft departed Quinhagak at 11:33.
An area believed to be the initial impact point was discovered on the northwest side of a mountain ridgeline at the 2300-foot level. The initial impact point was located north of and about 200 feet below the 2500-foot mountain summit and contained fragmented portions of fuselage and two severed propeller blades. From the initial impact point, the wreckage path extended southeast to the main wreckage, which was located downslope on the southeast side of the ridgeline at the 1,550-foot level. The outboard portion of the left wing had separated and was located about 200 feet further downslope below the main wreckage site. A postcrash fire incinerated a large portion of the fuselage and right wing.

PROBABLE CAUSE:
The National Transportation Safety Board determines that the probable cause of this accident was the flight crew’s decision to continue the visual flight rules flight into deteriorating visibility and their failure to perform an immediate escape maneuver after entry into instrument meteorological conditions, which resulted in controlled flight into terrain (CFIT). Contributing to the accident were
(1) Hageland’s allowance of routine use of the terrain inhibit switch for inhibiting the terrain awareness and warning system alerts and inadequate guidance for uninhibiting the alerts, which reduced the margin of safety, particularly in deteriorating visibility;
(2) Hageland’s inadequate crew resource management (CRM) training;
(3) the Federal Aviation Administration’s failure to ensure that Hageland’s approved CRM training contained all the required elements of Title 14 Code of Federal Regulations 135.330; and
(4) Hageland’s CFIT-avoidance ground training, which was not tailored to the company’s operations and did not address current CFIT-avoidance technologies.

21:09 UTC / 13:09 local time:
PATG 022109Z AUTO 00000KT 7SM -RA BKN015 OVC021 07/06 A2990 RMK AO2 P0001

21:40 UTC / 13:40 local time:
PATG 022140Z AUTO 00000KT 10SM FEW021 OVC042 08/07 A2990 RMK AO2 RAE13 P0001

ADN
KTUU
Ravn statement
NTSB

photo (c) Alaska State Troopers; nr Togiak, AK; 03 October 2016; (publicdomain)

photo (c) Alaska State Troopers; nr Togiak, AK; 03 October 2016; (publicdomain)

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