Maule MX-7-235 N5657Y accident near Boulder, Montana

May 23, 2008 · NTSB number LAX08LA154 · Final report

Probable cause

The pilot's decision to continue flight at low altitude in instrument weather conditions and his failure to maintain clearance from a power line. Contributing to the accident were low cloud and visibility conditions.

NTSB analysis

The pilot received a weather briefing prior to departing on a cross-country personal flight. The weather briefer informed the pilot that a visual flight rules flight was not recommended along his intended route due to low ceilings, limited visibilities, and precipitation. While following an interstate highway at low altitude, the airplane collided with high-tension power lines that crossed the interstate, and came to rest in trees approximately 130 yards northwest of the lines. Fog, low clouds, snow, and rain were present in the area of the accident site both before and after the accident. The surviving passenger reported that no engine or airframe malfunctions were encountered during the flight.

Text from the NTSB. Open the NTSB docket for LAX08LA154 for the full record.

Event

Date
May 23, 2008
Type
Accident
Place
Boulder, Montana
Highest injury
Fatal
Fatal injuries
1
Serious injuries
1
Weather
Instrument (IMC)
Light
Day

Maule MX-7-235

N-number
N5657Y
Category
Airplane
Damage
Substantial
Operating rule
Part 91 (general aviation)
Purpose of flight
Personal

From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.