WPR25FA223

NTSB accident investigation · Grumman American Avn. AA-5 · West Glacier, MT · July 26, 2025

Accident · FatalClass 3 · FieldPreliminary report
Date
July 26, 2025, 09:42 local (15:42 UTC)
Place
West Glacier, MT
Injuries
2 fatal
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N1342RGrumman American Avn. AA-5
Defining event
Takeoff: Runway excursion
Weather
Visual (VMC) · Day
Status
Investigation ongoing
Investigation class
Class 3
NTSB office
Western Pacific Region
Parties
FAA-FSDO, Lycoming Engines
FAA report
20250726010439A
Case key
200635

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

On this page

Preliminary report

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

On July 26, 2025, about 0942 mountain daylight time, a Grumman AA-5, N1342R, was destroyed when it was involved in an accident near West Glacier, Montana. The pilot and passenger were fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. Multiple witnesses located at the remote airstrip reported that the airplane taxied to the approach end of runway 15 and started the takeoff roll. They also reported that there was not an engine run-up prior to takeoff. During this time there were two airplanes flying near the airstrip with the intention of landing and were communicating with the accident airplane. The witnesses on the ground reported that as the airplane was on its takeoff roll, the engine was at a high RPM and sounded normal, but seemed to moving slow. One of the witnesses recalled seeing the flaps retracted during this time. The airplane continued down the grass covered airstrip and did not become airborne until it reached the end of the runway. The airplane collided with trees and terrain and a postimpact fire ensued. The accident site was located in wooded and rocky outcropped terrain on the edge of a clearing about 440 ft from the end of the runway. The accident site was at an elevation of 3,625 ft mean sea level and on a magnetic heading of 152° from the end of the runway. The debris field was about 80 ft long on a directional heading of about 150° magnetic. The main wreckage was the furthest in the debris field and was comprised of the fuselage, empennage, firewall, engine, propeller, and portions of the right wing. The left wing and the outboard right wing were found in the debris field. The wreckage was relocated to a secured facility for further examination.

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
N1342R
Reported as
Grumman American Avn. AA-5
Category
Airplane
Serial number
AA5-0742
Built
1975
Damage
Substantial damage
Fire
On-Ground
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Destination
Same as departure
Airport
2MT1 · Ryan Fld

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) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 48 °F
Altimeter
29.89 inHg
Observed at
KGPI, 16 nm away
METAR
METAR KGPI 261555Z VRB04KT 10SM CLR 21/09 A2989 RMK AO2 SLP105 T02060094=

FAA reports on this event · 1

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