Accident Beechcraft 36 N6222V,
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ASN Wikibase Occurrence # 353376
 
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Date:Saturday 8 May 1999
Time:14:50 LT
Type:Silhouette image of generic BE36 model; specific model in this crash may look slightly different    
Beechcraft 36
Owner/operator:Private
Registration: N6222V
MSN: E-3
Year of manufacture:1968
Total airframe hrs:3500 hours
Engine model:Continental IO-520-BA
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Portland, OR -   United States of America
Phase: Take off
Nature:Private
Departure airport:(KPDX)
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
During the takeoff roll, the pilot heard a loud explosion and the aircraft violently yawed to the left. The aircraft veered off the runway and came to rest in a grassy area between the runway and the taxiway. Examination of the aircraft's fuel system revealed evidence of a preexisting fuel leak. Blue streaking and staining, consistent in color with 100 low lead aviation fuel, was noted on the ventral surfaces of the aircraft. Examination of the aircraft's fuel bladder revealed that the plastic interconnect nipple for the vent line, and the plastic interconnect nipple for the fuel return line, located at the distal end of the aircraft's fuel bladder, were fractured. Further examination of the fuel bladder revealed approximately 20 preexisting holes in the bladder's fabric. The aircraft's maintenance logbook indicated that the aircraft was equipped with a strobe light kit. Examination of the strobe light system revealed that the installation of the strobe kit was not in accordance with the manufacture's installation instructions. Instead, the wiring harness for the strobe light was routed parallel to a stringer, between the wing ribs and the skin of the aircraft. Examination of the wiring revealed that the wire's insulation was chafed, cut and discolored. The discoloration of the wiring was indicative of arcing.

Probable Cause: Improper installation of the strobe light system. Factors include a leak in the fuel bladder and electrical arcing.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: SEA99FA060
Status: Investigation completed
Duration: 1 year 1 month
Download report: Final report

Sources:

NTSB SEA99FA060

History of this aircraft

Other occurrences involving this aircraft
20 August 2005 N6222V 0 Holland, Michigan sub

Location

Revision history:

Date/timeContributorUpdates
09-Mar-2024 13:20 ASN Update Bot Added

Corrections or additions? ... Edit this accident description

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