Crash of a De Havilland DHC-2 Beaver in Port Blakely
Date & Time:
Oct 1, 1999 at 1445 LT
Operator:
Registration:
N9766Z
Survivors:
Yes
Schedule:
Seattle - Seattle
MSN:
504
YOM:
1953
Crew on board:
1
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total hours on type:
240.00
Aircraft flight hours:
30792
Circumstances:
The pilot-in-command (PIC) departed Lake Union seaplane base with four British Broadcasting Company passengers aboard the De Havilland DHC-2 'Beaver.' The passengers were engaged in aerial videography of an east/west geological fault line crossing from south Seattle through Blakely Harbor near the south end of Bainbridge Island. An onboard video recorder captured a voice instructing 'Keep as low as you can and slow as you can while we're doing this please... .' The PIC's first pass over the south end of Bainbridge Island was uneventful and the aircraft was maneuvered for a second pass. The PIC reported that approaching the upsloping, tree covered terrain he applied climb flaps and power but shortly thereafter realized the climb rate was less than he expected. He attempted a shallow left turn towards down sloping terrain and then leveled the wings as the aircraft descended into the treetops. The scenario was corroborated by two onboard video recordings. The pilot reported no powerplant or control system malfunction during the accident flight. He also reported encountering a downdraft condition over the tree covered terrain. Winds remained below 12 knots throughout the day at reporting stations near the accident site, and the video recordings showed no wind streaking and only sporadic whitecaps on the surface of Puget Sound during the transit from Seattle to the south end of Bainbridge Island.
Probable cause:
The pilot-in-command's failure to maintain adequate clearance from trees/terrain. Contributing factors were rising terrain and trees.
Final Report:
