Accident Piper PA-34-200T Seneca II N666HL,
ASN logo
ASN Wikibase Occurrence # 38171
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:Tuesday 8 October 1996
Time:04:26 LT
Type:Silhouette image of generic PA34 model; specific model in this crash may look slightly different    
Piper PA-34-200T Seneca II
Owner/operator:Airpac Airlines Inc.
Registration: N666HL
MSN: 34-7770235
Total airframe hrs:12301 hours
Engine model:Continental TSIO-360-EB
Fatalities:Fatalities: 1 / Occupants: 1
Aircraft damage: Substantial
Location:Cle Elum, WA -   United States of America
Phase: En route
Departure airport:Spokane, WA (KGEG)
Destination airport:Seattle, WA (KBFI)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The pilot went to a doctor 6 hours before reporting to fly, and was diagnosed with gastritis, reflux symptoms, and fatigue. Just before taking off on the accident flight, the pilot complained to a fellow company pilot that he felt ill, expressing fear of repercussions from his company if he grounded himself. A few minutes before disappearing from contact with air traffic control, he radioed the fellow pilot (who was in another company aircraft on the same route): 'I don't feel so good...I feel like I'm going to toss my cookies.' The aircraft wreckage was located about 11 hours after the disappearance, with the pilot fatally injured inside. Wreckage distribution at the accident site was indicative of inflight separation of the right wing and horizontal stabilator. Subsequent examination indicated that the wing and stabilator separations were a result of overstress. No evidence of mechanical problems was noted, other than the separated wing and stabilator. In constructing a history of the pilot's activities before the accident, investigators found that his activities for the two days before the accident (during a rest period) were on a schedule inconsistent with his night air cargo duties.

Probable Cause: The pilot's physical impairment of judgment and performance, his decision to fly while impaired, and his subsequent failure to maintain control of the aircraft which led to the aircraft's design stress limits being exceeded and inflight separation of the horizontal stabiliator and right wing. Contributing to the accident were: pilot fatigue and self-induced pressure to fly.

Accident investigation:
Investigating agency: NTSB
Report number: SEA97FA006
Status: Investigation completed
Duration: 1 year and 5 months
Download report: Final report




Revision history:

24-Oct-2008 10:30 ASN archive Added
29-Nov-2015 10:28 JINX Updated [Phase, Nature, Destination airport, Source, Damage]
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
13-Oct-2017 18:29 TB Updated [Aircraft type, Source, Damage]
08-Apr-2024 18:40 ASN Update Bot Updated [Time, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Damage, Narrative, Category, Accident report]

Corrections or additions? ... Edit this accident description

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314