Accident Piper PA-44-180 Seminole N53505, Thursday 1 January 2004
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Date:Thursday 1 January 2004
Type:Silhouette image of generic PA44 model; specific model in this crash may look slightly different    
Piper PA-44-180 Seminole
Owner/operator:Auburn Flight Service, Inc.
Registration: N53505
MSN: 44-96126
Total airframe hrs:1296 hours
Engine model:Lycoming O-360-A1H6
Fatalities:Fatalities: 1 / Occupants: 4
Other fatalities:0
Aircraft damage: Substantial
Location:Cave Junction, OR -   United States of America
Phase: Approach
Departure airport:Oakland International Airport, CA (OAK/KOAK)
Destination airport:North Bend-Southwest Oregon Regional Airport, OR (OTH/KOTH)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The two commercially certificated flying pilots, accompanied by an airline transport rated pilot and a second passenger, departed Oakland, California, en route to North Bend, Oregon. A weather briefing had been obtained indicating an AIRMET for rime icing from the freezing level to 18,000 feet. The aircraft departed late in the afternoon, climbed to 12,000 feet and occasionally climbed to 13,000 feet for short durations in order to remain VMC above a cloud layer. Night environmental conditions existed when both engines began losing power and the copilot radioed Seattle Center that the aircraft had encountered "way too much induction ice to the engines," declaring an emergency. The pilot-in-command reported the outside air temperature at the power loss was about -20 degrees Celsius and he immediately applied full carburetor heat and began trouble shooting the problem while descending back toward a nearby airport. Application of carburetor heat bypassed the ice blocked induction air filters allowing unfiltered, warmed air to flow directly to the carburetors. Remedial action by the crew failed to regain full power and the aircraft broke out of the cloud bases in heavy snow too far down the runway to effect a landing. The pilot then began a turn to line up and land on the adjacent highway just east of the runway during which the aircraft's right wing struck several trees and the aircraft impacted near the west edge of the highway a short distance beyond.
Probable Cause: Both the pilot-in-command and the co-pilot allowing the aircraft to enter into an area of adverse weather (icing conditions at low [-20 degrees C] temperatures) resulting in sequential induction icing, induction filter blockage, carburetor icing and the subsequent partial loss of power in both engines followed by tree impact and collision with terrain during an emergency descent/approach. Contributing factors were icing conditions, low temperatures, night conditions and trees.

Accident investigation:
Investigating agency: NTSB
Report number: SEA04FA031
Status: Investigation completed
Download report: Final report




Revision history:

28-Oct-2008 00:45 ASN archive Added
21-Dec-2016 19:24 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
07-Dec-2017 17:35 ASN Update Bot Updated [Operator, Source, Narrative]
17-Nov-2022 15:44 Ron Averes Updated [Aircraft type, Departure airport, Destination airport]

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