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ASN Wikibase Occurrence # 36539
Last updated: 30 November 2020
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Date:17-JUL-1999
Time:12:45
Type:Silhouette image of generic P28A model; specific model in this crash may look slightly different
Piper PA-28-181
Owner/operator:Naperville Flying Club, Inc.
Registration: N5054F
C/n / msn: 28-7790083
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Yorkville, IL -   United States of America
Phase: En route
Nature:Private
Departure airport:Cincinnati, OH (ISZ)
Destination airport:Naperville, IL (LL10)
Investigating agency: NTSB
Narrative:
The airplane was flying a Visual Flight Rules (VFR) cross-country when it encountered instrument meteorological conditions (IMC) and precipitation. Witnesses stated that the airplane was flying northbound at an altitude described as being 50-60 feet above ground level (agl) before starting a turn, just prior to the in-flight collision with the terrain. National Oceanic and Atmospheric Administration (NOAA) National Weather Service weather-radar plots revealed that an area of precipitation had moved through the accident location, before and after the reported time of the accident. Aircraft radar track data for period before and after the reported accident time was obtained from the Federal Aviation Administration (FAA). This aircraft radar track data was plotted on the NOAA weather-radar plots and indicated that the accident aircraft had encountered an area of convective activity prior to and about the reported accident time. A weather observation station, located 10.9 nautical miles from the accident site on a 215-degree magnetic heading, reported the weather as visibility 1 3/4 statute miles and cloud conditions of 900 scattered, 1,800 broken, and 2,500 overcast. The pilot had received three weather briefings prior to his departure. The FAA Automated Flight Service Station (AFSS) advised the pilot that VFR flight was not recommended during two briefings and he was informed of deteriorating weather conditions along the proposed route of flight during his final briefing. The pilot received two weather briefings, while en route, from two FAA AFSS, and was advised of the deteriorating weather conditions, along the proposed route of flight, during each briefing.

Probable Cause: the pilot continuing into known adverse weather conditions, attempting low altitude flight, and not maintaining terrain clearance. Factors to the accident were the thunderstorm and the improper weather evaluation by the pilot following pre-departure and in-flight weather briefings.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X19167&key=1


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
14-Dec-2017 08:41 ASN Update Bot Updated [Operator, Source, Narrative]

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