ASN Wikibase Occurrence # 45490
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| Date: | Thursday 18 July 2002 |
| Time: | 18:42 |
| Type: |  Beechcraft C24R Sierra |
| Owner/operator: | Raytheon Employees Flying Club |
| Registration: | N18860 |
| MSN: | MC-512 |
| Total airframe hrs: | 3490 hours |
| Engine model: | Lycoming IO-360-A1B66 |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Grindstone, PA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Lawrence Airport, MA (LWM/KLWM) |
| Washington-County Airport, PA (WSG/KAFJ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On July 18, 2002, about 1842 eastern daylight time, a Beech C24R, N18860, was destroyed during an in-flight break up and subsequent collision with terrain in Grindstone, Pennsylvania. The certificated commercial pilot and passenger were fatally injured. Instrument meteorological conditions prevailed and an instrument flight rules (IFR) flight plan had been filed for the flight that departed the Lawrence Municipal Airport (LWM), Lawrence, Massachusetts, and was destined for the Washington County Airport (AFJ), Washington, Pennsylvania. The personal flight was conducted under 14 CFR Part 91.
The pilot was diverting around thunderstorm activity and had reported experiencing "severe turbulence." About 4 minutes later, the airplane began a descending left turn from about 4,700 feet. The airplane was observed at 4,400 feet and then 9 seconds later the airplane disappeared from radar, at an altitude of 3,100 feet. Witnesses reported observing parts separating from the airplane, prior to impact. Examination of the wreckage, which was scattered about 1/2 mile, did not reveal any pre-impact malfunctions. Convective Sigmets and a center weather advisory for thunderstorm activity were in effect for the area and provided to the pilot by air traffic control. Cloud tops in the area of the accident site were about 26,000 feet, with cloud tops about 40,000 feet, 11 miles north of the accident site.
Probable Cause: The pilot's inadequate in-flight planning/decision resulting in flight into adverse weather, and his failure to maintain aircraft control resulting in overstress of aircraft. A factor was the thunderstorm activity.
Accident investigation:
 |
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Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20020729X01238&key=1
Location
Images:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Dec-2017 16:57 | ASN Update Bot | Updated [Departure airport, Destination airport, Source, Narrative] |
| 13-Sep-2023 14:05 | Captain Adam | Updated [[Departure airport, Destination airport, Source, Narrative]] |
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