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ASN Wikibase Occurrence # 37767
Last updated: 16 February 2021
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Date:01-AUG-1984
Time:16:35
Type:Silhouette image of generic C421 model; specific model in this crash may look slightly different
Cessna 421C
Owner/operator:Brister
Registration: N6231G
C/n / msn: 421C0262
Fatalities:Fatalities: 3 / Occupants: 3
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Fort Lupton, CO -   United States of America
Phase: En route
Nature:Executive
Departure airport:Amarillo, TX (AMA)
Destination airport:Casper, WY (CPR)
Investigating agency: NTSB
Narrative:
DURING A PREFLT WX BRIEFING, THE PLT WAS ADVISED OF THUNDERSTORMS & INTENSE RAIN SHOWERS ON THE ROUTE OF flight. HOWEVER, HE FILED AN IFR FLT PLAN & TOOK OFF. DURING FLT, THE ATC CONTROLLER ADVISED THE PLT OF A LEVEL 6 CELL AHEAD & NOTED THAT HE HAD NO REPORT ON ITS TOP. THE PLT REPORTED THAT HE WAS 'NOT SHOWING ANYTHING' ON HIS RADAR. ATTEMPTS WERE MADE TO DEVIATE. APRX 20 MIN LATER, THE PLT REPORTED THE ACFT WAS ENCOUNTERING ICING CONDITIONS & WAS LOSING ALT. AFTER ANOTHER 1 MIN & 38 SEC, HE REPORTED 'WE'RE GOING IN.' SUBSEQUENTLY, AN IN-FLT BREAKUP OCCURRED. THE WRECKAGE WAS FOUND SCATTERED OVER A 1/2 MI AREA. AN EXAM REVEALED THAT THE OUTBOARD WING PANELS HAD FAILED IN flight. WITNESSES REPORTED SEEING EITHER SMOKE OR FIRE IN FLT BEFORE THE ACFT CRASHED. EVIDENCE OF AN ELECTRICAL DISCHARGE WAS FOUND ON THE OUTBOARD PORTION OF THE RIGHT WING. HOWEVER, THE PLT HAD NOT MENTIONED ANY ENCOUNTER WITH LIGHTNING ON THIS flight. NO EVIDENCE OF METAL FATIGUE WAS FOUND. CAUSE:

Sources:

NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001214X40696


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]

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