WPR25LA290

NTSB accident investigation · Eurocopter EC135 · Whittier, WA · September 24, 2025

Accident · Minor injuriesClass 3 · LimitedPreliminary report
Date
September 23, 2025, 23:03 local (Sep 24, 2025, 06:03 UTC)
Place
Whittier, WA · LZ adjacent to I-90 at mile marker 62
Injuries
4 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N955ALEurocopter EC135
Defining event
Maneuvering-hover: Low altitude operation/event
Weather
Visual (VMC) · Night
Status
Investigation ongoing
Investigation class
Class 3
NTSB office
Western Pacific Region
Parties
FAA
FAA report
20250923012939A
Case key
201708

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

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Preliminary report

What NTSB knew early in the investigation. It may change in the final report.

On September 23, 2025, at 2303 Pacific daylight time, a Eurocopter EC-135 T2+, N955AL, was substantially damaged when it was involved in an accident near Whittier, Washington. The pilot and three medical crew members received minor injuries. The helicopter was operated by Air Methods, LLC as a Title 14 Code of Federal Regulations Part 135 air medical flight. The pilot stated that while en route back to the helicopter’s base, he received a request to transport a medical patient. The pilot received the scene coordinates and proceeded to the location. Upon arrival, he determined the coordinates were incorrect by a few miles. After circling, he established communication with the landing zone (LZ) commander on the ground and was able to locate the scene. The LZ was located at an interstate highway exit adjacent to the highway, and the surface consisted of gravel and dirt. During his initial approach, he opted to perform a go-around maneuver and then establish an approach from another direction. The pilot further stated that he communicated with the onboard crew throughout the approach about their view and obstructions. The helicopter passed surrounding treetops and light poles and continued to the LZ. As the helicopter descended, the crewmember positioned in the left-front seat communicated that she observed dust accumulating in the air, which the pilot acknowledged. The helicopter continued to descend and, as it neared terrain, the crew’s visibility was reduced by dust/dirt, which the pilot described as “brown out.” According to the pilot, he maintained visual reference to a light on a vehicle parked at the scene, but decided not to abort the landing due to the rising terrain and nearby obstacles surrounding the LZ. As he attempted to maintain the helicopter in a hover about two feet above the ground, the helicopter impacted a mound of gravel and rolled onto its right side. (See Figure 1). The pilot reported no pre impact mechanical failures or malfunctions that would have precluded normal operation. Figure 1: Accident location (photo courtesy of Federal Aviation Administration)

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.

Aircraft

Registration
N955AL
Reported as
Eurocopter EC135 (T2 PLUS)
Category
Helicopter
Serial number
0554
Built
2007
Airframe hours
5,933
Damage
Substantial damage
Flight
Other work use · Part 135
Operator
Air Methods LLC
Registered owner
Acm El Trust Subsidiary LLC
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · January 14, 2025
Departed
KBFI · Tukwila, WA
Destination
Easton, WA
Flight plan
Company VFR
Equipment
Electronic primary flight display, Auto-pilot, ADS-B, Satellite tracking device

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.

Weather

Conditions
Visual (VMC) · Night
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 37 °F
Altimeter
30.19 inHg
Observed at
KSMP, 2 nm away
METAR
METAR KSMP 240556Z AUTO VRB03KT 10SM CLR 13/03 A3019 RMK AO2 SLP857 T01280033 10183 20128 50001

FAA reports on this event · 1

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