Serious incident Boeing 747-273C N470EV, Friday 5 January 2001
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Date:Friday 5 January 2001
Time:15:10 LT
Type:Silhouette image of generic B742 model; specific model in this crash may look slightly different    
Boeing 747-273C
Owner/operator:Evergreen International Airlines
Registration: N470EV
MSN: 20653/237
Year of manufacture:1974
Engine model:Pratt & Whitney JT9D-3 SER
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: None
Category:Serious incident
Location:Honolulu, HI -   United States of America
Phase: En route
Nature:Cargo
Departure airport:Honolulu-Daniel K. Inouye International Airport, HI (HNL/PHNL)
Destination airport:KPPG
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The transport category airplane developed an electrical burning odor about 1 hour after departure while at an altitude of 34,000 feet msl. The flight engineer noted smoke emanating from the center console. Following an uneventful landing, mechanics and FAA inspectors found a hot lower incandescent lamp dimmer, which burned the mechanic nearly 2 hours after electrical power was removed from the component. The dimmer and its corresponding circuit breakers were removed and examined. Scorching was noted around the dimmer LV1 lead and on the lower side of both circuit breaker covers. The switch and related circuit breakers were sent to the National Transportation Safety Board Materials Laboratory for examination, but were lost in transit.

Probable Cause: the failure of the lighting dimmer switch or circuit components for undetermined reasons, which resulted in smoke in the cockpit.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: LAX01IA073
Status: Investigation completed
Duration: 3 years and 2 months
Download report: Final report

Sources:

NTSB LAX01IA073

History of this aircraft

Other occurrences involving this aircraft

19 May 1996 N470EV Evergreen Aviation 0 Los Angeles, CA min

Location

Revision history:

Date/timeContributorUpdates
05-Apr-2024 13:44 ASN Update Bot Added
23-Dec-2024 16:58 Justanormalperson Updated [Aircraft type, Destination airport, Narrative, ]

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