ANC22LA023

NTSB accident investigation · Eurocopter AS 350 BA · Valdez, AK · March 15, 2022

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
March 15, 2022, 15:00 local (23:00 UTC)
Place
Valdez, AK · Mountainous snow covered
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N99676Eurocopter AS 350 BA
Defining event
Approach: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA- Juneau Flight Standards District Office
FAA report
20220315000899A
Case key
104788

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 pilot's failure to maintain a proper approach path in flat light conditions, which resulted in landing short of the intended landing spot and impact with terrain.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that the helicopter was being used to transport skiers in support of a commercial Heli-ski operation when the helicopter inadvertently collided with terrain while maneuvering to land on the glacier. The pilot stated that while on approach to an area to pick up a group of skiers, flat light conditions made it difficult to discern topographical features on the snow-covered, featureless, glacial terrain. The pilot said that during the approach, he inadvertently allowed the helicopter to descend below his intended approach path, and the helicopter touched down short of his intended landing site. The helicopter subsequently rolled to the left and the main rotor blades struck the snow-covered terrain. The helicopter sustained substantial damage to the main rotor blades, tail rotor blades, tail boom, and fuselage. The pilot reported that there were no pre-accident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Aircraft

Registration
N99676
Reported as
Eurocopter AS 350 BA
Category
Helicopter
Serial number
1542
Built
1982
Airframe hours
16,258
Engine
Honeywell LTS101-600A3A, 732 horsepower, turbo shaft
Damage
Substantial damage
Flight
Positioning · Part 135
Operator
Alpine Air Alaska LLC
Registered owner
Alpine Air Alaska LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · February 16, 2022 · 39.6 hours before
Departed
16 Mile, AK
Destination
Tsania Valley, AK
Flight plan
Company VFR
Equipment
Satellite tracking device, Handheld GPS, ADS-B

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
51
Injuries
Minor
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 1, With waivers/limitations
Last flight review
May 22, 2021
Seat
Front
Restraint
4-point
Flight hours
9,779 total · 9,978 as pilot in command · 49 in the last 90 days · 34 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 5 knots
Visibility
8 statute miles
Lowest ceiling
4,800 ft broken
Temperature
28 °F, dew point 16 °F
Altimeter
29.47 inHg
Observed at
PAVD, 13 nm away
METAR
PAVD 152356Z 26005KT 8SM FEW034 BKN048 OVC065 M02/M09 A2947 RMK AO2 SLP980 VCSH SE-NW 6//// T10221089 11011 21106 51009

Docket · 2

The files NTSB released with the investigation on May 12, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.6 MB in all.

FAA reports on this event · 1

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