Monday, July 24, 2017

Rans S-7 Courier, N6333Y, Maxcy Fishing Inc: Accident occurred July 23, 2017 in Cordova, Alaska

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Juneau, Alaska

Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

Maxcy Fishing Inc: http://registry.faa.gov/N6333Y

NTSB Identification: GAA17CA440
14 CFR Part 91: General Aviation
Accident occurred Sunday, July 23, 2017 in Cordova, AK
Aircraft: MITCHELL DERRYLE V RANS S 7 COURIER, registration: N6333Y
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot of the float-equipped airplane reported that, following takeoff from a lake, he turned left downwind about 750 ft. above the water. He added that, once the turn was completed, the airplane encountered a strong downdraft, which "pushed [the] tail of [the airplane] down and away to [the] left" and the airplane began to descend. The pilot corrected with left rudder and was able to "straighten [the airplane] just prior to [the] right float tip contacting water." The airplane impacted the water, nosed over, and sank. The pilot egressed without further incidence.

The airplane sustained substantial damage to both wings.

The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

The pilot reported on the NTSB Form 6120.1 that the wind was from the east/southeast at 15 to 20 knots, gusting to 25 knots. The pilot reported a takeoff to the east. 

A review of recorded data from an automated weather observation station located about 7 nautical miles to the east of the accident, about the time of the accident, reported winds calm, 10 statues miles visibility, few clouds at 600 ft, scattered clouds at 1,200 ft, and an overcast ceiling at 3,200 ft, temperature 54°F, dew point 54°F, and an altimeter setting at 30.19" Hg. The computed density altitude at 750 ft. was 322 ft.

The Federal Aviation Administration's Airport Facility Directory, for an airport 2 nautical miles west of the accident site, states in part: "strong East winds, rwy subj to strong downdrafts."

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